diff --git a/fftools/Makefile b/fftools/Makefile
index da420786eb..5ebf50d42e 100644
--- a/fftools/Makefile
+++ b/fftools/Makefile
@@ -12,7 +12,7 @@ ALLAVPROGS_G = $(AVBASENAMES:%=%$(PROGSSUF)_g$(EXESUF))
 OBJS-ffmpeg                        += fftools/ffmpeg_opt.o fftools/ffmpeg_filter.o fftools/ffmpeg_hw.o
 
 define DOFFTOOL
-OBJS-$(1) += fftools/cmdutils.o fftools/$(1).o $(OBJS-$(1)-yes)
+OBJS-$(1) += fftools/cmdutils.o fftools/opt_common.o fftools/$(1).o $(OBJS-$(1)-yes)
 $(1)$(PROGSSUF)_g$(EXESUF): $$(OBJS-$(1))
 $$(OBJS-$(1)): | fftools
 $$(OBJS-$(1)): CFLAGS  += $(CFLAGS-$(1))
diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
index 0ac98852fe..12ef07b62f 100644
--- a/fftools/cmdutils.c
+++ b/fftools/cmdutils.c
@@ -32,30 +32,21 @@
 #include "config.h"
 #include "compat/va_copy.h"
 #include "libavformat/avformat.h"
-#include "libavfilter/avfilter.h"
-#include "libavdevice/avdevice.h"
 #include "libswscale/swscale.h"
 #include "libswresample/swresample.h"
-#include "libpostproc/postprocess.h"
-#include "libavutil/attributes.h"
 #include "libavutil/avassert.h"
 #include "libavutil/avstring.h"
-#include "libavutil/bprint.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/display.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/libm.h"
 #include "libavutil/parseutils.h"
-#include "libavutil/pixdesc.h"
 #include "libavutil/eval.h"
 #include "libavutil/dict.h"
 #include "libavutil/opt.h"
-#include "libavutil/cpu.h"
-#include "libavutil/ffversion.h"
-#include "libavutil/version.h"
-#include "libavcodec/bsf.h"
 #include "cmdutils.h"
+#include "opt_common.h"
 #if HAVE_SYS_RESOURCE_H
 #include <sys/time.h>
 #include <sys/resource.h>
@@ -64,22 +55,12 @@
 #include <windows.h>
 #endif
 
-static int init_report(const char *env);
-
 AVDictionary *sws_dict;
 AVDictionary *swr_opts;
 AVDictionary *format_opts, *codec_opts;
 
-static FILE *report_file;
-static int report_file_level = AV_LOG_DEBUG;
 int hide_banner = 0;
 
-enum show_muxdemuxers {
-    SHOW_DEFAULT,
-    SHOW_DEMUXERS,
-    SHOW_MUXERS,
-};
-
 void uninit_opts(void)
 {
     av_dict_free(&swr_opts);
@@ -93,22 +74,6 @@ void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
     vfprintf(stdout, fmt, vl);
 }
 
-static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
-{
-    va_list vl2;
-    char line[1024];
-    static int print_prefix = 1;
-
-    va_copy(vl2, vl);
-    av_log_default_callback(ptr, level, fmt, vl);
-    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
-    va_end(vl2);
-    if (report_file_level >= level) {
-        fputs(line, report_file);
-        fflush(report_file);
-    }
-}
-
 void init_dynload(void)
 {
 #if HAVE_SETDLLDIRECTORY && defined(_WIN32)
@@ -461,7 +426,7 @@ int locate_option(int argc, char **argv, const OptionDef *options,
     return 0;
 }
 
-static void dump_argument(const char *a)
+static void dump_argument(FILE *report_file, const char *a)
 {
     const unsigned char *p;
 
@@ -507,12 +472,13 @@ void parse_loglevel(int argc, char **argv, const OptionDef *options)
         opt_loglevel(NULL, "loglevel", argv[idx + 1]);
     idx = locate_option(argc, argv, options, "report");
     if ((env = getenv("FFREPORT")) || idx) {
-        init_report(env);
+        FILE *report_file = NULL;
+        init_report(env, &report_file);
         if (report_file) {
             int i;
             fprintf(report_file, "Command line:\n");
             for (i = 0; i < argc; i++) {
-                dump_argument(argv[i]);
+                dump_argument(report_file, argv[i]);
                 fputc(i < argc - 1 ? ' ' : '\n', report_file);
             }
             fflush(report_file);
@@ -831,246 +797,6 @@ do {                                                                           \
     return 0;
 }
 
-int opt_cpuflags(void *optctx, const char *opt, const char *arg)
-{
-    int ret;
-    unsigned flags = av_get_cpu_flags();
-
-    if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
-        return ret;
-
-    av_force_cpu_flags(flags);
-    return 0;
-}
-
-int opt_cpucount(void *optctx, const char *opt, const char *arg)
-{
-    int ret;
-    int count;
-
-    static const AVOption opts[] = {
-        {"count", NULL, 0, AV_OPT_TYPE_INT, { .i64 = -1}, -1, INT_MAX},
-        {NULL},
-    };
-    static const AVClass class = {
-        .class_name = "cpucount",
-        .item_name  = av_default_item_name,
-        .option     = opts,
-        .version    = LIBAVUTIL_VERSION_INT,
-    };
-    const AVClass *pclass = &class;
-
-    ret = av_opt_eval_int(&pclass, opts, arg, &count);
-
-    if (!ret) {
-        av_cpu_force_count(count);
-    }
-
-    return ret;
-}
-
-int opt_loglevel(void *optctx, const char *opt, const char *arg)
-{
-    const struct { const char *name; int level; } log_levels[] = {
-        { "quiet"  , AV_LOG_QUIET   },
-        { "panic"  , AV_LOG_PANIC   },
-        { "fatal"  , AV_LOG_FATAL   },
-        { "error"  , AV_LOG_ERROR   },
-        { "warning", AV_LOG_WARNING },
-        { "info"   , AV_LOG_INFO    },
-        { "verbose", AV_LOG_VERBOSE },
-        { "debug"  , AV_LOG_DEBUG   },
-        { "trace"  , AV_LOG_TRACE   },
-    };
-    const char *token;
-    char *tail;
-    int flags = av_log_get_flags();
-    int level = av_log_get_level();
-    int cmd, i = 0;
-
-    av_assert0(arg);
-    while (*arg) {
-        token = arg;
-        if (*token == '+' || *token == '-') {
-            cmd = *token++;
-        } else {
-            cmd = 0;
-        }
-        if (!i && !cmd) {
-            flags = 0;  /* missing relative prefix, build absolute value */
-        }
-        if (av_strstart(token, "repeat", &arg)) {
-            if (cmd == '-') {
-                flags |= AV_LOG_SKIP_REPEATED;
-            } else {
-                flags &= ~AV_LOG_SKIP_REPEATED;
-            }
-        } else if (av_strstart(token, "level", &arg)) {
-            if (cmd == '-') {
-                flags &= ~AV_LOG_PRINT_LEVEL;
-            } else {
-                flags |= AV_LOG_PRINT_LEVEL;
-            }
-        } else {
-            break;
-        }
-        i++;
-    }
-    if (!*arg) {
-        goto end;
-    } else if (*arg == '+') {
-        arg++;
-    } else if (!i) {
-        flags = av_log_get_flags();  /* level value without prefix, reset flags */
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
-        if (!strcmp(log_levels[i].name, arg)) {
-            level = log_levels[i].level;
-            goto end;
-        }
-    }
-
-    level = strtol(arg, &tail, 10);
-    if (*tail) {
-        av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
-               "Possible levels are numbers or:\n", arg);
-        for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
-            av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
-        exit_program(1);
-    }
-
-end:
-    av_log_set_flags(flags);
-    av_log_set_level(level);
-    return 0;
-}
-
-static void expand_filename_template(AVBPrint *bp, const char *template,
-                                     struct tm *tm)
-{
-    int c;
-
-    while ((c = *(template++))) {
-        if (c == '%') {
-            if (!(c = *(template++)))
-                break;
-            switch (c) {
-            case 'p':
-                av_bprintf(bp, "%s", program_name);
-                break;
-            case 't':
-                av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
-                           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
-                           tm->tm_hour, tm->tm_min, tm->tm_sec);
-                break;
-            case '%':
-                av_bprint_chars(bp, c, 1);
-                break;
-            }
-        } else {
-            av_bprint_chars(bp, c, 1);
-        }
-    }
-}
-
-static int init_report(const char *env)
-{
-    char *filename_template = NULL;
-    char *key, *val;
-    int ret, count = 0;
-    int prog_loglevel, envlevel = 0;
-    time_t now;
-    struct tm *tm;
-    AVBPrint filename;
-
-    if (report_file) /* already opened */
-        return 0;
-    time(&now);
-    tm = localtime(&now);
-
-    while (env && *env) {
-        if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
-            if (count)
-                av_log(NULL, AV_LOG_ERROR,
-                       "Failed to parse FFREPORT environment variable: %s\n",
-                       av_err2str(ret));
-            break;
-        }
-        if (*env)
-            env++;
-        count++;
-        if (!strcmp(key, "file")) {
-            av_free(filename_template);
-            filename_template = val;
-            val = NULL;
-        } else if (!strcmp(key, "level")) {
-            char *tail;
-            report_file_level = strtol(val, &tail, 10);
-            if (*tail) {
-                av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
-                exit_program(1);
-            }
-            envlevel = 1;
-        } else {
-            av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
-        }
-        av_free(val);
-        av_free(key);
-    }
-
-    av_bprint_init(&filename, 0, AV_BPRINT_SIZE_AUTOMATIC);
-    expand_filename_template(&filename,
-                             av_x_if_null(filename_template, "%p-%t.log"), tm);
-    av_free(filename_template);
-    if (!av_bprint_is_complete(&filename)) {
-        av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
-        return AVERROR(ENOMEM);
-    }
-
-    prog_loglevel = av_log_get_level();
-    if (!envlevel)
-        report_file_level = FFMAX(report_file_level, prog_loglevel);
-
-    report_file = fopen(filename.str, "w");
-    if (!report_file) {
-        int ret = AVERROR(errno);
-        av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
-               filename.str, strerror(errno));
-        return ret;
-    }
-    av_log_set_callback(log_callback_report);
-    av_log(NULL, AV_LOG_INFO,
-           "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
-           "Report written to \"%s\"\n"
-           "Log level: %d\n",
-           program_name,
-           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
-           tm->tm_hour, tm->tm_min, tm->tm_sec,
-           filename.str, report_file_level);
-    av_bprint_finalize(&filename, NULL);
-    return 0;
-}
-
-int opt_report(void *optctx, const char *opt, const char *arg)
-{
-    return init_report(NULL);
-}
-
-int opt_max_alloc(void *optctx, const char *opt, const char *arg)
-{
-    char *tail;
-    size_t max;
-
-    max = strtol(arg, &tail, 10);
-    if (*tail) {
-        av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
-        exit_program(1);
-    }
-    av_max_alloc(max);
-    return 0;
-}
-
 int opt_timelimit(void *optctx, const char *opt, const char *arg)
 {
 #if HAVE_SETRLIMIT
@@ -1094,960 +820,6 @@ void print_error(const char *filename, int err)
     av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
 }
 
-static int warned_cfg = 0;
-
-#define INDENT        1
-#define SHOW_VERSION  2
-#define SHOW_CONFIG   4
-#define SHOW_COPYRIGHT 8
-
-#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)                  \
-    if (CONFIG_##LIBNAME) {                                             \
-        const char *indent = flags & INDENT? "  " : "";                 \
-        if (flags & SHOW_VERSION) {                                     \
-            unsigned int version = libname##_version();                 \
-            av_log(NULL, level,                                         \
-                   "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n",            \
-                   indent, #libname,                                    \
-                   LIB##LIBNAME##_VERSION_MAJOR,                        \
-                   LIB##LIBNAME##_VERSION_MINOR,                        \
-                   LIB##LIBNAME##_VERSION_MICRO,                        \
-                   AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
-                   AV_VERSION_MICRO(version));                          \
-        }                                                               \
-        if (flags & SHOW_CONFIG) {                                      \
-            const char *cfg = libname##_configuration();                \
-            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \
-                if (!warned_cfg) {                                      \
-                    av_log(NULL, level,                                 \
-                            "%sWARNING: library configuration mismatch\n", \
-                            indent);                                    \
-                    warned_cfg = 1;                                     \
-                }                                                       \
-                av_log(NULL, level, "%s%-11s configuration: %s\n",      \
-                        indent, #libname, cfg);                         \
-            }                                                           \
-        }                                                               \
-    }                                                                   \
-
-static void print_all_libs_info(int flags, int level)
-{
-    PRINT_LIB_INFO(avutil,     AVUTIL,     flags, level);
-    PRINT_LIB_INFO(avcodec,    AVCODEC,    flags, level);
-    PRINT_LIB_INFO(avformat,   AVFORMAT,   flags, level);
-    PRINT_LIB_INFO(avdevice,   AVDEVICE,   flags, level);
-    PRINT_LIB_INFO(avfilter,   AVFILTER,   flags, level);
-    PRINT_LIB_INFO(swscale,    SWSCALE,    flags, level);
-    PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
-    PRINT_LIB_INFO(postproc,   POSTPROC,   flags, level);
-}
-
-static void print_program_info(int flags, int level)
-{
-    const char *indent = flags & INDENT? "  " : "";
-
-    av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
-    if (flags & SHOW_COPYRIGHT)
-        av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
-               program_birth_year, CONFIG_THIS_YEAR);
-    av_log(NULL, level, "\n");
-    av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
-
-    av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
-}
-
-static void print_buildconf(int flags, int level)
-{
-    const char *indent = flags & INDENT ? "  " : "";
-    char str[] = { FFMPEG_CONFIGURATION };
-    char *conflist, *remove_tilde, *splitconf;
-
-    // Change all the ' --' strings to '~--' so that
-    // they can be identified as tokens.
-    while ((conflist = strstr(str, " --")) != NULL) {
-        conflist[0] = '~';
-    }
-
-    // Compensate for the weirdness this would cause
-    // when passing 'pkg-config --static'.
-    while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
-        remove_tilde[sizeof("pkg-config~") - 2] = ' ';
-    }
-
-    splitconf = strtok(str, "~");
-    av_log(NULL, level, "\n%sconfiguration:\n", indent);
-    while (splitconf != NULL) {
-        av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
-        splitconf = strtok(NULL, "~");
-    }
-}
-
-void show_banner(int argc, char **argv, const OptionDef *options)
-{
-    int idx = locate_option(argc, argv, options, "version");
-    if (hide_banner || idx)
-        return;
-
-    print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
-    print_all_libs_info(INDENT|SHOW_CONFIG,  AV_LOG_INFO);
-    print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
-}
-
-int show_version(void *optctx, const char *opt, const char *arg)
-{
-    av_log_set_callback(log_callback_help);
-    print_program_info (SHOW_COPYRIGHT, AV_LOG_INFO);
-    print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
-
-    return 0;
-}
-
-int show_buildconf(void *optctx, const char *opt, const char *arg)
-{
-    av_log_set_callback(log_callback_help);
-    print_buildconf      (INDENT|0, AV_LOG_INFO);
-
-    return 0;
-}
-
-int show_license(void *optctx, const char *opt, const char *arg)
-{
-#if CONFIG_NONFREE
-    printf(
-    "This version of %s has nonfree parts compiled in.\n"
-    "Therefore it is not legally redistributable.\n",
-    program_name );
-#elif CONFIG_GPLV3
-    printf(
-    "%s is free software; you can redistribute it and/or modify\n"
-    "it under the terms of the GNU General Public License as published by\n"
-    "the Free Software Foundation; either version 3 of the License, or\n"
-    "(at your option) any later version.\n"
-    "\n"
-    "%s is distributed in the hope that it will be useful,\n"
-    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
-    "GNU General Public License for more details.\n"
-    "\n"
-    "You should have received a copy of the GNU General Public License\n"
-    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",
-    program_name, program_name, program_name );
-#elif CONFIG_GPL
-    printf(
-    "%s is free software; you can redistribute it and/or modify\n"
-    "it under the terms of the GNU General Public License as published by\n"
-    "the Free Software Foundation; either version 2 of the License, or\n"
-    "(at your option) any later version.\n"
-    "\n"
-    "%s is distributed in the hope that it will be useful,\n"
-    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
-    "GNU General Public License for more details.\n"
-    "\n"
-    "You should have received a copy of the GNU General Public License\n"
-    "along with %s; if not, write to the Free Software\n"
-    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
-    program_name, program_name, program_name );
-#elif CONFIG_LGPLV3
-    printf(
-    "%s is free software; you can redistribute it and/or modify\n"
-    "it under the terms of the GNU Lesser General Public License as published by\n"
-    "the Free Software Foundation; either version 3 of the License, or\n"
-    "(at your option) any later version.\n"
-    "\n"
-    "%s is distributed in the hope that it will be useful,\n"
-    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
-    "GNU Lesser General Public License for more details.\n"
-    "\n"
-    "You should have received a copy of the GNU Lesser General Public License\n"
-    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",
-    program_name, program_name, program_name );
-#else
-    printf(
-    "%s is free software; you can redistribute it and/or\n"
-    "modify it under the terms of the GNU Lesser General Public\n"
-    "License as published by the Free Software Foundation; either\n"
-    "version 2.1 of the License, or (at your option) any later version.\n"
-    "\n"
-    "%s is distributed in the hope that it will be useful,\n"
-    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
-    "Lesser General Public License for more details.\n"
-    "\n"
-    "You should have received a copy of the GNU Lesser General Public\n"
-    "License along with %s; if not, write to the Free Software\n"
-    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
-    program_name, program_name, program_name );
-#endif
-
-    return 0;
-}
-
-static int is_device(const AVClass *avclass)
-{
-    if (!avclass)
-        return 0;
-    return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
-}
-
-static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
-{
-    void *ifmt_opaque = NULL;
-    const AVInputFormat *ifmt  = NULL;
-    void *ofmt_opaque = NULL;
-    const AVOutputFormat *ofmt = NULL;
-    const char *last_name;
-    int is_dev;
-
-    printf("%s\n"
-           " D. = Demuxing supported\n"
-           " .E = Muxing supported\n"
-           " --\n", device_only ? "Devices:" : "File formats:");
-    last_name = "000";
-    for (;;) {
-        int decode = 0;
-        int encode = 0;
-        const char *name      = NULL;
-        const char *long_name = NULL;
-
-        if (muxdemuxers !=SHOW_DEMUXERS) {
-            ofmt_opaque = NULL;
-            while ((ofmt = av_muxer_iterate(&ofmt_opaque))) {
-                is_dev = is_device(ofmt->priv_class);
-                if (!is_dev && device_only)
-                    continue;
-                if ((!name || strcmp(ofmt->name, name) < 0) &&
-                    strcmp(ofmt->name, last_name) > 0) {
-                    name      = ofmt->name;
-                    long_name = ofmt->long_name;
-                    encode    = 1;
-                }
-            }
-        }
-        if (muxdemuxers != SHOW_MUXERS) {
-            ifmt_opaque = NULL;
-            while ((ifmt = av_demuxer_iterate(&ifmt_opaque))) {
-                is_dev = is_device(ifmt->priv_class);
-                if (!is_dev && device_only)
-                    continue;
-                if ((!name || strcmp(ifmt->name, name) < 0) &&
-                    strcmp(ifmt->name, last_name) > 0) {
-                    name      = ifmt->name;
-                    long_name = ifmt->long_name;
-                    encode    = 0;
-                }
-                if (name && strcmp(ifmt->name, name) == 0)
-                    decode = 1;
-            }
-        }
-        if (!name)
-            break;
-        last_name = name;
-
-        printf(" %c%c %-15s %s\n",
-               decode ? 'D' : ' ',
-               encode ? 'E' : ' ',
-               name,
-            long_name ? long_name:" ");
-    }
-    return 0;
-}
-
-int show_formats(void *optctx, const char *opt, const char *arg)
-{
-    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
-}
-
-int show_muxers(void *optctx, const char *opt, const char *arg)
-{
-    return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
-}
-
-int show_demuxers(void *optctx, const char *opt, const char *arg)
-{
-    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
-}
-
-int show_devices(void *optctx, const char *opt, const char *arg)
-{
-    return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
-}
-
-#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
-    if (codec->field) {                                                      \
-        const type *p = codec->field;                                        \
-                                                                             \
-        printf("    Supported " list_name ":");                              \
-        while (*p != term) {                                                 \
-            get_name(*p);                                                    \
-            printf(" %s", name);                                             \
-            p++;                                                             \
-        }                                                                    \
-        printf("\n");                                                        \
-    }                                                                        \
-
-static void print_codec(const AVCodec *c)
-{
-    int encoder = av_codec_is_encoder(c);
-
-    printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
-           c->long_name ? c->long_name : "");
-
-    printf("    General capabilities: ");
-    if (c->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)
-        printf("horizband ");
-    if (c->capabilities & AV_CODEC_CAP_DR1)
-        printf("dr1 ");
-    if (c->capabilities & AV_CODEC_CAP_DELAY)
-        printf("delay ");
-    if (c->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME)
-        printf("small ");
-    if (c->capabilities & AV_CODEC_CAP_SUBFRAMES)
-        printf("subframes ");
-    if (c->capabilities & AV_CODEC_CAP_EXPERIMENTAL)
-        printf("exp ");
-    if (c->capabilities & AV_CODEC_CAP_CHANNEL_CONF)
-        printf("chconf ");
-    if (c->capabilities & AV_CODEC_CAP_PARAM_CHANGE)
-        printf("paramchange ");
-    if (c->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
-        printf("variable ");
-    if (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
-                           AV_CODEC_CAP_SLICE_THREADS |
-                           AV_CODEC_CAP_OTHER_THREADS))
-        printf("threads ");
-    if (c->capabilities & AV_CODEC_CAP_AVOID_PROBING)
-        printf("avoidprobe ");
-    if (c->capabilities & AV_CODEC_CAP_HARDWARE)
-        printf("hardware ");
-    if (c->capabilities & AV_CODEC_CAP_HYBRID)
-        printf("hybrid ");
-    if (!c->capabilities)
-        printf("none");
-    printf("\n");
-
-    if (c->type == AVMEDIA_TYPE_VIDEO ||
-        c->type == AVMEDIA_TYPE_AUDIO) {
-        printf("    Threading capabilities: ");
-        switch (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
-                                   AV_CODEC_CAP_SLICE_THREADS |
-                                   AV_CODEC_CAP_OTHER_THREADS)) {
-        case AV_CODEC_CAP_FRAME_THREADS |
-             AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
-        case AV_CODEC_CAP_FRAME_THREADS: printf("frame");           break;
-        case AV_CODEC_CAP_SLICE_THREADS: printf("slice");           break;
-        case AV_CODEC_CAP_OTHER_THREADS: printf("other");           break;
-        default:                         printf("none");            break;
-        }
-        printf("\n");
-    }
-
-    if (avcodec_get_hw_config(c, 0)) {
-        printf("    Supported hardware devices: ");
-        for (int i = 0;; i++) {
-            const AVCodecHWConfig *config = avcodec_get_hw_config(c, i);
-            if (!config)
-                break;
-            printf("%s ", av_hwdevice_get_type_name(config->device_type));
-        }
-        printf("\n");
-    }
-
-    if (c->supported_framerates) {
-        const AVRational *fps = c->supported_framerates;
-
-        printf("    Supported framerates:");
-        while (fps->num) {
-            printf(" %d/%d", fps->num, fps->den);
-            fps++;
-        }
-        printf("\n");
-    }
-    PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
-                          AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
-    PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
-                          GET_SAMPLE_RATE_NAME);
-    PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
-                          AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
-    PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
-                          0, GET_CH_LAYOUT_DESC);
-
-    if (c->priv_class) {
-        show_help_children(c->priv_class,
-                           AV_OPT_FLAG_ENCODING_PARAM |
-                           AV_OPT_FLAG_DECODING_PARAM);
-    }
-}
-
-static char get_media_type_char(enum AVMediaType type)
-{
-    switch (type) {
-        case AVMEDIA_TYPE_VIDEO:    return 'V';
-        case AVMEDIA_TYPE_AUDIO:    return 'A';
-        case AVMEDIA_TYPE_DATA:     return 'D';
-        case AVMEDIA_TYPE_SUBTITLE: return 'S';
-        case AVMEDIA_TYPE_ATTACHMENT:return 'T';
-        default:                    return '?';
-    }
-}
-
-static const AVCodec *next_codec_for_id(enum AVCodecID id, void **iter,
-                                        int encoder)
-{
-    const AVCodec *c;
-    while ((c = av_codec_iterate(iter))) {
-        if (c->id == id &&
-            (encoder ? av_codec_is_encoder(c) : av_codec_is_decoder(c)))
-            return c;
-    }
-    return NULL;
-}
-
-static int compare_codec_desc(const void *a, const void *b)
-{
-    const AVCodecDescriptor * const *da = a;
-    const AVCodecDescriptor * const *db = b;
-
-    return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
-           strcmp((*da)->name, (*db)->name);
-}
-
-static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
-{
-    const AVCodecDescriptor *desc = NULL;
-    const AVCodecDescriptor **codecs;
-    unsigned nb_codecs = 0, i = 0;
-
-    while ((desc = avcodec_descriptor_next(desc)))
-        nb_codecs++;
-    if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
-        av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
-        exit_program(1);
-    }
-    desc = NULL;
-    while ((desc = avcodec_descriptor_next(desc)))
-        codecs[i++] = desc;
-    av_assert0(i == nb_codecs);
-    qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
-    *rcodecs = codecs;
-    return nb_codecs;
-}
-
-static void print_codecs_for_id(enum AVCodecID id, int encoder)
-{
-    void *iter = NULL;
-    const AVCodec *codec;
-
-    printf(" (%s: ", encoder ? "encoders" : "decoders");
-
-    while ((codec = next_codec_for_id(id, &iter, encoder)))
-        printf("%s ", codec->name);
-
-    printf(")");
-}
-
-int show_codecs(void *optctx, const char *opt, const char *arg)
-{
-    const AVCodecDescriptor **codecs;
-    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
-
-    printf("Codecs:\n"
-           " D..... = Decoding supported\n"
-           " .E.... = Encoding supported\n"
-           " ..V... = Video codec\n"
-           " ..A... = Audio codec\n"
-           " ..S... = Subtitle codec\n"
-           " ...I.. = Intra frame-only codec\n"
-           " ....L. = Lossy compression\n"
-           " .....S = Lossless compression\n"
-           " -------\n");
-    for (i = 0; i < nb_codecs; i++) {
-        const AVCodecDescriptor *desc = codecs[i];
-        const AVCodec *codec;
-        void *iter = NULL;
-
-        if (strstr(desc->name, "_deprecated"))
-            continue;
-
-        printf(" ");
-        printf(avcodec_find_decoder(desc->id) ? "D" : ".");
-        printf(avcodec_find_encoder(desc->id) ? "E" : ".");
-
-        printf("%c", get_media_type_char(desc->type));
-        printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
-        printf((desc->props & AV_CODEC_PROP_LOSSY)      ? "L" : ".");
-        printf((desc->props & AV_CODEC_PROP_LOSSLESS)   ? "S" : ".");
-
-        printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
-
-        /* print decoders/encoders when there's more than one or their
-         * names are different from codec name */
-        while ((codec = next_codec_for_id(desc->id, &iter, 0))) {
-            if (strcmp(codec->name, desc->name)) {
-                print_codecs_for_id(desc->id, 0);
-                break;
-            }
-        }
-        iter = NULL;
-        while ((codec = next_codec_for_id(desc->id, &iter, 1))) {
-            if (strcmp(codec->name, desc->name)) {
-                print_codecs_for_id(desc->id, 1);
-                break;
-            }
-        }
-
-        printf("\n");
-    }
-    av_free(codecs);
-    return 0;
-}
-
-static void print_codecs(int encoder)
-{
-    const AVCodecDescriptor **codecs;
-    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
-
-    printf("%s:\n"
-           " V..... = Video\n"
-           " A..... = Audio\n"
-           " S..... = Subtitle\n"
-           " .F.... = Frame-level multithreading\n"
-           " ..S... = Slice-level multithreading\n"
-           " ...X.. = Codec is experimental\n"
-           " ....B. = Supports draw_horiz_band\n"
-           " .....D = Supports direct rendering method 1\n"
-           " ------\n",
-           encoder ? "Encoders" : "Decoders");
-    for (i = 0; i < nb_codecs; i++) {
-        const AVCodecDescriptor *desc = codecs[i];
-        const AVCodec *codec;
-        void *iter = NULL;
-
-        while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
-            printf(" %c", get_media_type_char(desc->type));
-            printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
-            printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
-            printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL)  ? "X" : ".");
-            printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
-            printf((codec->capabilities & AV_CODEC_CAP_DR1)           ? "D" : ".");
-
-            printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
-            if (strcmp(codec->name, desc->name))
-                printf(" (codec %s)", desc->name);
-
-            printf("\n");
-        }
-    }
-    av_free(codecs);
-}
-
-int show_decoders(void *optctx, const char *opt, const char *arg)
-{
-    print_codecs(0);
-    return 0;
-}
-
-int show_encoders(void *optctx, const char *opt, const char *arg)
-{
-    print_codecs(1);
-    return 0;
-}
-
-int show_bsfs(void *optctx, const char *opt, const char *arg)
-{
-    const AVBitStreamFilter *bsf = NULL;
-    void *opaque = NULL;
-
-    printf("Bitstream filters:\n");
-    while ((bsf = av_bsf_iterate(&opaque)))
-        printf("%s\n", bsf->name);
-    printf("\n");
-    return 0;
-}
-
-int show_protocols(void *optctx, const char *opt, const char *arg)
-{
-    void *opaque = NULL;
-    const char *name;
-
-    printf("Supported file protocols:\n"
-           "Input:\n");
-    while ((name = avio_enum_protocols(&opaque, 0)))
-        printf("  %s\n", name);
-    printf("Output:\n");
-    while ((name = avio_enum_protocols(&opaque, 1)))
-        printf("  %s\n", name);
-    return 0;
-}
-
-int show_filters(void *optctx, const char *opt, const char *arg)
-{
-#if CONFIG_AVFILTER
-    const AVFilter *filter = NULL;
-    char descr[64], *descr_cur;
-    void *opaque = NULL;
-    int i, j;
-    const AVFilterPad *pad;
-
-    printf("Filters:\n"
-           "  T.. = Timeline support\n"
-           "  .S. = Slice threading\n"
-           "  ..C = Command support\n"
-           "  A = Audio input/output\n"
-           "  V = Video input/output\n"
-           "  N = Dynamic number and/or type of input/output\n"
-           "  | = Source or sink filter\n");
-    while ((filter = av_filter_iterate(&opaque))) {
-        descr_cur = descr;
-        for (i = 0; i < 2; i++) {
-            unsigned nb_pads;
-            if (i) {
-                *(descr_cur++) = '-';
-                *(descr_cur++) = '>';
-            }
-            pad = i ? filter->outputs : filter->inputs;
-            nb_pads = avfilter_filter_pad_count(filter, i);
-            for (j = 0; j < nb_pads; j++) {
-                if (descr_cur >= descr + sizeof(descr) - 4)
-                    break;
-                *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
-            }
-            if (!j)
-                *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
-                                  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
-        }
-        *descr_cur = 0;
-        printf(" %c%c%c %-17s %-10s %s\n",
-               filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
-               filter->flags & AVFILTER_FLAG_SLICE_THREADS    ? 'S' : '.',
-               filter->process_command                        ? 'C' : '.',
-               filter->name, descr, filter->description);
-    }
-#else
-    printf("No filters available: libavfilter disabled\n");
-#endif
-    return 0;
-}
-
-int show_colors(void *optctx, const char *opt, const char *arg)
-{
-    const char *name;
-    const uint8_t *rgb;
-    int i;
-
-    printf("%-32s #RRGGBB\n", "name");
-
-    for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
-        printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
-
-    return 0;
-}
-
-int show_pix_fmts(void *optctx, const char *opt, const char *arg)
-{
-    const AVPixFmtDescriptor *pix_desc = NULL;
-
-    printf("Pixel formats:\n"
-           "I.... = Supported Input  format for conversion\n"
-           ".O... = Supported Output format for conversion\n"
-           "..H.. = Hardware accelerated format\n"
-           "...P. = Paletted format\n"
-           "....B = Bitstream format\n"
-           "FLAGS NAME            NB_COMPONENTS BITS_PER_PIXEL BIT_DEPTHS\n"
-           "-----\n");
-
-#if !CONFIG_SWSCALE
-#   define sws_isSupportedInput(x)  0
-#   define sws_isSupportedOutput(x) 0
-#endif
-
-    while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
-        enum AVPixelFormat av_unused pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
-        printf("%c%c%c%c%c %-16s       %d            %3d      %d",
-               sws_isSupportedInput (pix_fmt)              ? 'I' : '.',
-               sws_isSupportedOutput(pix_fmt)              ? 'O' : '.',
-               pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL   ? 'H' : '.',
-               pix_desc->flags & AV_PIX_FMT_FLAG_PAL       ? 'P' : '.',
-               pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
-               pix_desc->name,
-               pix_desc->nb_components,
-               av_get_bits_per_pixel(pix_desc),
-               pix_desc->comp[0].depth);
-
-        for (unsigned i = 1; i < pix_desc->nb_components; i++)
-            printf("-%d", pix_desc->comp[i].depth);
-        printf("\n");
-    }
-    return 0;
-}
-
-int show_layouts(void *optctx, const char *opt, const char *arg)
-{
-    int i = 0;
-    uint64_t layout, j;
-    const char *name, *descr;
-
-    printf("Individual channels:\n"
-           "NAME           DESCRIPTION\n");
-    for (i = 0; i < 63; i++) {
-        name = av_get_channel_name((uint64_t)1 << i);
-        if (!name)
-            continue;
-        descr = av_get_channel_description((uint64_t)1 << i);
-        printf("%-14s %s\n", name, descr);
-    }
-    printf("\nStandard channel layouts:\n"
-           "NAME           DECOMPOSITION\n");
-    for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
-        if (name) {
-            printf("%-14s ", name);
-            for (j = 1; j; j <<= 1)
-                if ((layout & j))
-                    printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
-            printf("\n");
-        }
-    }
-    return 0;
-}
-
-int show_sample_fmts(void *optctx, const char *opt, const char *arg)
-{
-    int i;
-    char fmt_str[128];
-    for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
-        printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
-    return 0;
-}
-
-int show_dispositions(void *optctx, const char *opt, const char *arg)
-{
-    for (int i = 0; i < 32; i++) {
-        const char *str = av_disposition_to_string(1U << i);
-        if (str)
-            printf("%s\n", str);
-    }
-    return 0;
-}
-
-static void show_help_codec(const char *name, int encoder)
-{
-    const AVCodecDescriptor *desc;
-    const AVCodec *codec;
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
-        return;
-    }
-
-    codec = encoder ? avcodec_find_encoder_by_name(name) :
-                      avcodec_find_decoder_by_name(name);
-
-    if (codec)
-        print_codec(codec);
-    else if ((desc = avcodec_descriptor_get_by_name(name))) {
-        void *iter = NULL;
-        int printed = 0;
-
-        while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
-            printed = 1;
-            print_codec(codec);
-        }
-
-        if (!printed) {
-            av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
-                   "but no %s for it are available. FFmpeg might need to be "
-                   "recompiled with additional external libraries.\n",
-                   name, encoder ? "encoders" : "decoders");
-        }
-    } else {
-        av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
-               name);
-    }
-}
-
-static void show_help_demuxer(const char *name)
-{
-    const AVInputFormat *fmt = av_find_input_format(name);
-
-    if (!fmt) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
-        return;
-    }
-
-    printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
-
-    if (fmt->extensions)
-        printf("    Common extensions: %s.\n", fmt->extensions);
-
-    if (fmt->priv_class)
-        show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
-}
-
-static void show_help_protocol(const char *name)
-{
-    const AVClass *proto_class;
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No protocol name specified.\n");
-        return;
-    }
-
-    proto_class = avio_protocol_get_class(name);
-    if (!proto_class) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown protocol '%s'.\n", name);
-        return;
-    }
-
-    show_help_children(proto_class, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
-}
-
-static void show_help_muxer(const char *name)
-{
-    const AVCodecDescriptor *desc;
-    const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
-
-    if (!fmt) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
-        return;
-    }
-
-    printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
-
-    if (fmt->extensions)
-        printf("    Common extensions: %s.\n", fmt->extensions);
-    if (fmt->mime_type)
-        printf("    Mime type: %s.\n", fmt->mime_type);
-    if (fmt->video_codec != AV_CODEC_ID_NONE &&
-        (desc = avcodec_descriptor_get(fmt->video_codec))) {
-        printf("    Default video codec: %s.\n", desc->name);
-    }
-    if (fmt->audio_codec != AV_CODEC_ID_NONE &&
-        (desc = avcodec_descriptor_get(fmt->audio_codec))) {
-        printf("    Default audio codec: %s.\n", desc->name);
-    }
-    if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
-        (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
-        printf("    Default subtitle codec: %s.\n", desc->name);
-    }
-
-    if (fmt->priv_class)
-        show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
-}
-
-#if CONFIG_AVFILTER
-static void show_help_filter(const char *name)
-{
-#if CONFIG_AVFILTER
-    const AVFilter *f = avfilter_get_by_name(name);
-    int i, count;
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
-        return;
-    } else if (!f) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
-        return;
-    }
-
-    printf("Filter %s\n", f->name);
-    if (f->description)
-        printf("  %s\n", f->description);
-
-    if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
-        printf("    slice threading supported\n");
-
-    printf("    Inputs:\n");
-    count = avfilter_filter_pad_count(f, 0);
-    for (i = 0; i < count; i++) {
-        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
-               av_get_media_type_string(avfilter_pad_get_type(f->inputs, i)));
-    }
-    if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
-        printf("        dynamic (depending on the options)\n");
-    else if (!count)
-        printf("        none (source filter)\n");
-
-    printf("    Outputs:\n");
-    count = avfilter_filter_pad_count(f, 1);
-    for (i = 0; i < count; i++) {
-        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
-               av_get_media_type_string(avfilter_pad_get_type(f->outputs, i)));
-    }
-    if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
-        printf("        dynamic (depending on the options)\n");
-    else if (!count)
-        printf("        none (sink filter)\n");
-
-    if (f->priv_class)
-        show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
-                                          AV_OPT_FLAG_AUDIO_PARAM);
-    if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
-        printf("This filter has support for timeline through the 'enable' option.\n");
-#else
-    av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
-           "can not to satisfy request\n");
-#endif
-}
-#endif
-
-static void show_help_bsf(const char *name)
-{
-    const AVBitStreamFilter *bsf = av_bsf_get_by_name(name);
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No bitstream filter name specified.\n");
-        return;
-    } else if (!bsf) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown bit stream filter '%s'.\n", name);
-        return;
-    }
-
-    printf("Bit stream filter %s\n", bsf->name);
-    PRINT_CODEC_SUPPORTED(bsf, codec_ids, enum AVCodecID, "codecs",
-                          AV_CODEC_ID_NONE, GET_CODEC_NAME);
-    if (bsf->priv_class)
-        show_help_children(bsf->priv_class, AV_OPT_FLAG_BSF_PARAM);
-}
-
-int show_help(void *optctx, const char *opt, const char *arg)
-{
-    char *topic, *par;
-    av_log_set_callback(log_callback_help);
-
-    topic = av_strdup(arg ? arg : "");
-    if (!topic)
-        return AVERROR(ENOMEM);
-    par = strchr(topic, '=');
-    if (par)
-        *par++ = 0;
-
-    if (!*topic) {
-        show_help_default(topic, par);
-    } else if (!strcmp(topic, "decoder")) {
-        show_help_codec(par, 0);
-    } else if (!strcmp(topic, "encoder")) {
-        show_help_codec(par, 1);
-    } else if (!strcmp(topic, "demuxer")) {
-        show_help_demuxer(par);
-    } else if (!strcmp(topic, "muxer")) {
-        show_help_muxer(par);
-    } else if (!strcmp(topic, "protocol")) {
-        show_help_protocol(par);
-#if CONFIG_AVFILTER
-    } else if (!strcmp(topic, "filter")) {
-        show_help_filter(par);
-#endif
-    } else if (!strcmp(topic, "bsf")) {
-        show_help_bsf(par);
-    } else {
-        show_help_default(topic, par);
-    }
-
-    av_freep(&topic);
-    return 0;
-}
-
 int read_yesno(void)
 {
     int c = getchar();
@@ -2242,164 +1014,3 @@ double get_rotation(int32_t *displaymatrix)
 
     return theta;
 }
-
-#if CONFIG_AVDEVICE
-static void print_device_list(const AVDeviceInfoList *device_list)
-{
-    // print devices
-    for (int i = 0; i < device_list->nb_devices; i++) {
-        const AVDeviceInfo *device = device_list->devices[i];
-        printf("%c %s [%s] (", device_list->default_device == i ? '*' : ' ',
-            device->device_name, device->device_description);
-        if (device->nb_media_types > 0) {
-            for (int j = 0; j < device->nb_media_types; ++j) {
-                const char* media_type = av_get_media_type_string(device->media_types[j]);
-                if (j > 0)
-                    printf(", ");
-                printf("%s", media_type ? media_type : "unknown");
-            }
-        } else {
-            printf("none");
-        }
-        printf(")\n");
-    }
-}
-static int print_device_sources(const AVInputFormat *fmt, AVDictionary *opts)
-{
-    int ret;
-    AVDeviceInfoList *device_list = NULL;
-
-    if (!fmt || !fmt->priv_class  || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
-        return AVERROR(EINVAL);
-
-    printf("Auto-detected sources for %s:\n", fmt->name);
-    if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
-        printf("Cannot list sources: %s\n", av_err2str(ret));
-        goto fail;
-    }
-
-    print_device_list(device_list);
-
-  fail:
-    avdevice_free_list_devices(&device_list);
-    return ret;
-}
-
-static int print_device_sinks(const AVOutputFormat *fmt, AVDictionary *opts)
-{
-    int ret;
-    AVDeviceInfoList *device_list = NULL;
-
-    if (!fmt || !fmt->priv_class  || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
-        return AVERROR(EINVAL);
-
-    printf("Auto-detected sinks for %s:\n", fmt->name);
-    if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
-        printf("Cannot list sinks: %s\n", av_err2str(ret));
-        goto fail;
-    }
-
-    print_device_list(device_list);
-
-  fail:
-    avdevice_free_list_devices(&device_list);
-    return ret;
-}
-
-static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
-{
-    int ret;
-    if (arg) {
-        char *opts_str = NULL;
-        av_assert0(dev && opts);
-        *dev = av_strdup(arg);
-        if (!*dev)
-            return AVERROR(ENOMEM);
-        if ((opts_str = strchr(*dev, ','))) {
-            *(opts_str++) = '\0';
-            if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
-                av_freep(dev);
-                return ret;
-            }
-        }
-    } else
-        printf("\nDevice name is not provided.\n"
-                "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
-    return 0;
-}
-
-int show_sources(void *optctx, const char *opt, const char *arg)
-{
-    const AVInputFormat *fmt = NULL;
-    char *dev = NULL;
-    AVDictionary *opts = NULL;
-    int ret = 0;
-    int error_level = av_log_get_level();
-
-    av_log_set_level(AV_LOG_WARNING);
-
-    if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
-        goto fail;
-
-    do {
-        fmt = av_input_audio_device_next(fmt);
-        if (fmt) {
-            if (!strcmp(fmt->name, "lavfi"))
-                continue; //it's pointless to probe lavfi
-            if (dev && !av_match_name(dev, fmt->name))
-                continue;
-            print_device_sources(fmt, opts);
-        }
-    } while (fmt);
-    do {
-        fmt = av_input_video_device_next(fmt);
-        if (fmt) {
-            if (dev && !av_match_name(dev, fmt->name))
-                continue;
-            print_device_sources(fmt, opts);
-        }
-    } while (fmt);
-  fail:
-    av_dict_free(&opts);
-    av_free(dev);
-    av_log_set_level(error_level);
-    return ret;
-}
-
-int show_sinks(void *optctx, const char *opt, const char *arg)
-{
-    const AVOutputFormat *fmt = NULL;
-    char *dev = NULL;
-    AVDictionary *opts = NULL;
-    int ret = 0;
-    int error_level = av_log_get_level();
-
-    av_log_set_level(AV_LOG_WARNING);
-
-    if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
-        goto fail;
-
-    do {
-        fmt = av_output_audio_device_next(fmt);
-        if (fmt) {
-            if (dev && !av_match_name(dev, fmt->name))
-                continue;
-            print_device_sinks(fmt, opts);
-        }
-    } while (fmt);
-    do {
-        fmt = av_output_video_device_next(fmt);
-        if (fmt) {
-            if (dev && !av_match_name(dev, fmt->name))
-                continue;
-            print_device_sinks(fmt, opts);
-        }
-    } while (fmt);
-  fail:
-    av_dict_free(&opts);
-    av_free(dev);
-    av_log_set_level(error_level);
-    return ret;
-}
-
-#endif
diff --git a/fftools/cmdutils.h b/fftools/cmdutils.h
index 57db531f5c..5a32461f66 100644
--- a/fftools/cmdutils.h
+++ b/fftools/cmdutils.h
@@ -76,31 +76,12 @@ void uninit_opts(void);
  */
 void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
 
-/**
- * Override the cpuflags.
- */
-int opt_cpuflags(void *optctx, const char *opt, const char *arg);
-
-/**
- * Override the cpucount.
- */
-int opt_cpucount(void *optctx, const char *opt, const char *arg);
-
 /**
  * Fallback for options that are not explicitly handled, these will be
  * parsed through AVOptions.
  */
 int opt_default(void *optctx, const char *opt, const char *arg);
 
-/**
- * Set the libav* libraries log level.
- */
-int opt_loglevel(void *optctx, const char *opt, const char *arg);
-
-int opt_report(void *optctx, const char *opt, const char *arg);
-
-int opt_max_alloc(void *optctx, const char *opt, const char *arg);
-
 /**
  * Limit the execution time.
  */
@@ -197,49 +178,6 @@ typedef struct OptionDef {
 void show_help_options(const OptionDef *options, const char *msg, int req_flags,
                        int rej_flags, int alt_flags);
 
-#if CONFIG_AVDEVICE
-#define CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                \
-    { "sources"    , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },                                                  \
-      "list sources of the input device", "device" },                                                                   \
-    { "sinks"      , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },                                                    \
-      "list sinks of the output device", "device" },                                                                    \
-
-#else
-#define CMDUTILS_COMMON_OPTIONS_AVDEVICE
-#endif
-
-#define CMDUTILS_COMMON_OPTIONS                                                                                         \
-    { "L",           OPT_EXIT,             { .func_arg = show_license },     "show license" },                          \
-    { "h",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
-    { "?",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
-    { "help",        OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
-    { "-help",       OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
-    { "version",     OPT_EXIT,             { .func_arg = show_version },     "show version" },                          \
-    { "buildconf",   OPT_EXIT,             { .func_arg = show_buildconf },   "show build configuration" },              \
-    { "formats",     OPT_EXIT,             { .func_arg = show_formats },     "show available formats" },                \
-    { "muxers",      OPT_EXIT,             { .func_arg = show_muxers },      "show available muxers" },                 \
-    { "demuxers",    OPT_EXIT,             { .func_arg = show_demuxers },    "show available demuxers" },               \
-    { "devices",     OPT_EXIT,             { .func_arg = show_devices },     "show available devices" },                \
-    { "codecs",      OPT_EXIT,             { .func_arg = show_codecs },      "show available codecs" },                 \
-    { "decoders",    OPT_EXIT,             { .func_arg = show_decoders },    "show available decoders" },               \
-    { "encoders",    OPT_EXIT,             { .func_arg = show_encoders },    "show available encoders" },               \
-    { "bsfs",        OPT_EXIT,             { .func_arg = show_bsfs },        "show available bit stream filters" },     \
-    { "protocols",   OPT_EXIT,             { .func_arg = show_protocols },   "show available protocols" },              \
-    { "filters",     OPT_EXIT,             { .func_arg = show_filters },     "show available filters" },                \
-    { "pix_fmts",    OPT_EXIT,             { .func_arg = show_pix_fmts },    "show available pixel formats" },          \
-    { "layouts",     OPT_EXIT,             { .func_arg = show_layouts },     "show standard channel layouts" },         \
-    { "sample_fmts", OPT_EXIT,             { .func_arg = show_sample_fmts }, "show available audio sample formats" },   \
-    { "dispositions", OPT_EXIT,            { .func_arg = show_dispositions}, "show available stream dispositions" },    \
-    { "colors",      OPT_EXIT,             { .func_arg = show_colors },      "show available color names" },            \
-    { "loglevel",    HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
-    { "v",           HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
-    { "report",      0,                    { .func_arg = opt_report },       "generate a report" },                     \
-    { "max_alloc",   HAS_ARG,              { .func_arg = opt_max_alloc },    "set maximum size of a single allocated block", "bytes" }, \
-    { "cpuflags",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags },     "force specific cpu flags", "flags" },     \
-    { "cpucount",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpucount },     "force specific cpu count", "count" },     \
-    { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner},     "do not show program banner", "hide_banner" },          \
-    CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                    \
-
 /**
  * Show help for all options with given flags in class and all its
  * children.
@@ -252,11 +190,6 @@ void show_help_children(const AVClass *class, int flags);
  */
 void show_help_default(const char *opt, const char *arg);
 
-/**
- * Generic -h handler common to all fftools.
- */
-int show_help(void *optctx, const char *opt, const char *arg);
-
 /**
  * Parse the command line arguments.
  *
@@ -445,141 +378,6 @@ void print_error(const char *filename, int err);
  */
 void show_banner(int argc, char **argv, const OptionDef *options);
 
-/**
- * Print the version of the program to stdout. The version message
- * depends on the current versions of the repository and of the libav*
- * libraries.
- * This option processing function does not utilize the arguments.
- */
-int show_version(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print the build configuration of the program to stdout. The contents
- * depend on the definition of FFMPEG_CONFIGURATION.
- * This option processing function does not utilize the arguments.
- */
-int show_buildconf(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print the license of the program to stdout. The license depends on
- * the license of the libraries compiled into the program.
- * This option processing function does not utilize the arguments.
- */
-int show_license(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the formats supported by the
- * program (including devices).
- * This option processing function does not utilize the arguments.
- */
-int show_formats(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the muxers supported by the
- * program (including devices).
- * This option processing function does not utilize the arguments.
- */
-int show_muxers(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the demuxer supported by the
- * program (including devices).
- * This option processing function does not utilize the arguments.
- */
-int show_demuxers(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the devices supported by the
- * program.
- * This option processing function does not utilize the arguments.
- */
-int show_devices(void *optctx, const char *opt, const char *arg);
-
-#if CONFIG_AVDEVICE
-/**
- * Print a listing containing autodetected sinks of the output device.
- * Device name with options may be passed as an argument to limit results.
- */
-int show_sinks(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing autodetected sources of the input device.
- * Device name with options may be passed as an argument to limit results.
- */
-int show_sources(void *optctx, const char *opt, const char *arg);
-#endif
-
-/**
- * Print a listing containing all the codecs supported by the
- * program.
- * This option processing function does not utilize the arguments.
- */
-int show_codecs(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the decoders supported by the
- * program.
- */
-int show_decoders(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the encoders supported by the
- * program.
- */
-int show_encoders(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the filters supported by the
- * program.
- * This option processing function does not utilize the arguments.
- */
-int show_filters(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the bit stream filters supported by the
- * program.
- * This option processing function does not utilize the arguments.
- */
-int show_bsfs(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the protocols supported by the
- * program.
- * This option processing function does not utilize the arguments.
- */
-int show_protocols(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the pixel formats supported by the
- * program.
- * This option processing function does not utilize the arguments.
- */
-int show_pix_fmts(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the standard channel layouts supported by
- * the program.
- * This option processing function does not utilize the arguments.
- */
-int show_layouts(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the sample formats supported by the
- * program.
- */
-int show_sample_fmts(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all supported stream dispositions.
- */
-int show_dispositions(void *optctx, const char *opt, const char *arg);
-
-/**
- * Print a listing containing all the color names and values recognized
- * by the program.
- */
-int show_colors(void *optctx, const char *opt, const char *arg);
-
 /**
  * Return a positive value if a line read from standard input
  * starts with [yY], otherwise return 0.
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index f983c74a66..b2746259d7 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -23,6 +23,7 @@
 
 #include "ffmpeg.h"
 #include "cmdutils.h"
+#include "opt_common.h"
 
 #include "libavformat/avformat.h"
 
diff --git a/fftools/ffplay.c b/fftools/ffplay.c
index ac48d8765d..c929ce32ed 100644
--- a/fftools/ffplay.c
+++ b/fftools/ffplay.c
@@ -59,6 +59,7 @@
 #include <SDL_thread.h>
 
 #include "cmdutils.h"
+#include "opt_common.h"
 
 const char program_name[] = "ffplay";
 const int program_birth_year = 2003;
diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
index 66206b66d9..42032ee9d6 100644
--- a/fftools/ffprobe.c
+++ b/fftools/ffprobe.c
@@ -55,6 +55,7 @@
 #include "libswresample/swresample.h"
 #include "libpostproc/postprocess.h"
 #include "cmdutils.h"
+#include "opt_common.h"
 
 #include "libavutil/thread.h"
 
diff --git a/fftools/cmdutils.c b/fftools/opt_common.c
similarity index 60%
copy from fftools/cmdutils.c
copy to fftools/opt_common.c
index 0ac98852fe..38fbee9b6c 100644
--- a/fftools/cmdutils.c
+++ b/fftools/opt_common.c
@@ -1,6 +1,5 @@
 /*
- * Various utilities for command line tools
- * Copyright (c) 2000-2003 Fabrice Bellard
+ * Option handlers shared between the tools.
  *
  * This file is part of FFmpeg.
  *
@@ -19,1196 +18,56 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <string.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <math.h>
-
-/* Include only the enabled headers since some compilers (namely, Sun
-   Studio) will not omit unused inline functions and create undefined
-   references to libraries that are not being built. */
-
-#include "config.h"
-#include "compat/va_copy.h"
-#include "libavformat/avformat.h"
-#include "libavfilter/avfilter.h"
-#include "libavdevice/avdevice.h"
-#include "libswscale/swscale.h"
-#include "libswresample/swresample.h"
-#include "libpostproc/postprocess.h"
-#include "libavutil/attributes.h"
-#include "libavutil/avassert.h"
-#include "libavutil/avstring.h"
-#include "libavutil/bprint.h"
-#include "libavutil/channel_layout.h"
-#include "libavutil/display.h"
-#include "libavutil/mathematics.h"
-#include "libavutil/imgutils.h"
-#include "libavutil/libm.h"
-#include "libavutil/parseutils.h"
-#include "libavutil/pixdesc.h"
-#include "libavutil/eval.h"
-#include "libavutil/dict.h"
-#include "libavutil/opt.h"
-#include "libavutil/cpu.h"
-#include "libavutil/ffversion.h"
-#include "libavutil/version.h"
-#include "libavcodec/bsf.h"
-#include "cmdutils.h"
-#if HAVE_SYS_RESOURCE_H
-#include <sys/time.h>
-#include <sys/resource.h>
-#endif
-#ifdef _WIN32
-#include <windows.h>
-#endif
-
-static int init_report(const char *env);
-
-AVDictionary *sws_dict;
-AVDictionary *swr_opts;
-AVDictionary *format_opts, *codec_opts;
-
-static FILE *report_file;
-static int report_file_level = AV_LOG_DEBUG;
-int hide_banner = 0;
-
-enum show_muxdemuxers {
-    SHOW_DEFAULT,
-    SHOW_DEMUXERS,
-    SHOW_MUXERS,
-};
-
-void uninit_opts(void)
-{
-    av_dict_free(&swr_opts);
-    av_dict_free(&sws_dict);
-    av_dict_free(&format_opts);
-    av_dict_free(&codec_opts);
-}
-
-void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
-{
-    vfprintf(stdout, fmt, vl);
-}
-
-static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
-{
-    va_list vl2;
-    char line[1024];
-    static int print_prefix = 1;
-
-    va_copy(vl2, vl);
-    av_log_default_callback(ptr, level, fmt, vl);
-    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
-    va_end(vl2);
-    if (report_file_level >= level) {
-        fputs(line, report_file);
-        fflush(report_file);
-    }
-}
-
-void init_dynload(void)
-{
-#if HAVE_SETDLLDIRECTORY && defined(_WIN32)
-    /* Calling SetDllDirectory with the empty string (but not NULL) removes the
-     * current working directory from the DLL search path as a security pre-caution. */
-    SetDllDirectory("");
-#endif
-}
-
-static void (*program_exit)(int ret);
-
-void register_exit(void (*cb)(int ret))
-{
-    program_exit = cb;
-}
-
-void exit_program(int ret)
-{
-    if (program_exit)
-        program_exit(ret);
-
-    exit(ret);
-}
-
-double parse_number_or_die(const char *context, const char *numstr, int type,
-                           double min, double max)
-{
-    char *tail;
-    const char *error;
-    double d = av_strtod(numstr, &tail);
-    if (*tail)
-        error = "Expected number for %s but found: %s\n";
-    else if (d < min || d > max)
-        error = "The value for %s was %s which is not within %f - %f\n";
-    else if (type == OPT_INT64 && (int64_t)d != d)
-        error = "Expected int64 for %s but found %s\n";
-    else if (type == OPT_INT && (int)d != d)
-        error = "Expected int for %s but found %s\n";
-    else
-        return d;
-    av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
-    exit_program(1);
-    return 0;
-}
-
-int64_t parse_time_or_die(const char *context, const char *timestr,
-                          int is_duration)
-{
-    int64_t us;
-    if (av_parse_time(&us, timestr, is_duration) < 0) {
-        av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
-               is_duration ? "duration" : "date", context, timestr);
-        exit_program(1);
-    }
-    return us;
-}
-
-void show_help_options(const OptionDef *options, const char *msg, int req_flags,
-                       int rej_flags, int alt_flags)
-{
-    const OptionDef *po;
-    int first;
-
-    first = 1;
-    for (po = options; po->name; po++) {
-        char buf[128];
-
-        if (((po->flags & req_flags) != req_flags) ||
-            (alt_flags && !(po->flags & alt_flags)) ||
-            (po->flags & rej_flags))
-            continue;
-
-        if (first) {
-            printf("%s\n", msg);
-            first = 0;
-        }
-        av_strlcpy(buf, po->name, sizeof(buf));
-        if (po->argname) {
-            av_strlcat(buf, " ", sizeof(buf));
-            av_strlcat(buf, po->argname, sizeof(buf));
-        }
-        printf("-%-17s  %s\n", buf, po->help);
-    }
-    printf("\n");
-}
-
-void show_help_children(const AVClass *class, int flags)
-{
-    void *iter = NULL;
-    const AVClass *child;
-    if (class->option) {
-        av_opt_show2(&class, NULL, flags, 0);
-        printf("\n");
-    }
-
-    while (child = av_opt_child_class_iterate(class, &iter))
-        show_help_children(child, flags);
-}
-
-static const OptionDef *find_option(const OptionDef *po, const char *name)
-{
-    while (po->name) {
-        const char *end;
-        if (av_strstart(name, po->name, &end) && (!*end || *end == ':'))
-            break;
-        po++;
-    }
-    return po;
-}
-
-/* _WIN32 means using the windows libc - cygwin doesn't define that
- * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
- * it doesn't provide the actual command line via GetCommandLineW(). */
-#if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
-#include <shellapi.h>
-/* Will be leaked on exit */
-static char** win32_argv_utf8 = NULL;
-static int win32_argc = 0;
-
-/**
- * Prepare command line arguments for executable.
- * For Windows - perform wide-char to UTF-8 conversion.
- * Input arguments should be main() function arguments.
- * @param argc_ptr Arguments number (including executable)
- * @param argv_ptr Arguments list.
- */
-static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
-{
-    char *argstr_flat;
-    wchar_t **argv_w;
-    int i, buffsize = 0, offset = 0;
-
-    if (win32_argv_utf8) {
-        *argc_ptr = win32_argc;
-        *argv_ptr = win32_argv_utf8;
-        return;
-    }
-
-    win32_argc = 0;
-    argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
-    if (win32_argc <= 0 || !argv_w)
-        return;
-
-    /* determine the UTF-8 buffer size (including NULL-termination symbols) */
-    for (i = 0; i < win32_argc; i++)
-        buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
-                                        NULL, 0, NULL, NULL);
-
-    win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
-    argstr_flat     = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
-    if (!win32_argv_utf8) {
-        LocalFree(argv_w);
-        return;
-    }
-
-    for (i = 0; i < win32_argc; i++) {
-        win32_argv_utf8[i] = &argstr_flat[offset];
-        offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
-                                      &argstr_flat[offset],
-                                      buffsize - offset, NULL, NULL);
-    }
-    win32_argv_utf8[i] = NULL;
-    LocalFree(argv_w);
-
-    *argc_ptr = win32_argc;
-    *argv_ptr = win32_argv_utf8;
-}
-#else
-static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
-{
-    /* nothing to do */
-}
-#endif /* HAVE_COMMANDLINETOARGVW */
-
-static int write_option(void *optctx, const OptionDef *po, const char *opt,
-                        const char *arg)
-{
-    /* new-style options contain an offset into optctx, old-style address of
-     * a global var*/
-    void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
-                (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
-    int *dstcount;
-
-    if (po->flags & OPT_SPEC) {
-        SpecifierOpt **so = dst;
-        char *p = strchr(opt, ':');
-        char *str;
-
-        dstcount = (int *)(so + 1);
-        *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
-        str = av_strdup(p ? p + 1 : "");
-        if (!str)
-            return AVERROR(ENOMEM);
-        (*so)[*dstcount - 1].specifier = str;
-        dst = &(*so)[*dstcount - 1].u;
-    }
-
-    if (po->flags & OPT_STRING) {
-        char *str;
-        str = av_strdup(arg);
-        av_freep(dst);
-        if (!str)
-            return AVERROR(ENOMEM);
-        *(char **)dst = str;
-    } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
-        *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
-    } else if (po->flags & OPT_INT64) {
-        *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
-    } else if (po->flags & OPT_TIME) {
-        *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
-    } else if (po->flags & OPT_FLOAT) {
-        *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
-    } else if (po->flags & OPT_DOUBLE) {
-        *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
-    } else if (po->u.func_arg) {
-        int ret = po->u.func_arg(optctx, opt, arg);
-        if (ret < 0) {
-            av_log(NULL, AV_LOG_ERROR,
-                   "Failed to set value '%s' for option '%s': %s\n",
-                   arg, opt, av_err2str(ret));
-            return ret;
-        }
-    }
-    if (po->flags & OPT_EXIT)
-        exit_program(0);
-
-    return 0;
-}
-
-int parse_option(void *optctx, const char *opt, const char *arg,
-                 const OptionDef *options)
-{
-    const OptionDef *po;
-    int ret;
-
-    po = find_option(options, opt);
-    if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
-        /* handle 'no' bool option */
-        po = find_option(options, opt + 2);
-        if ((po->name && (po->flags & OPT_BOOL)))
-            arg = "0";
-    } else if (po->flags & OPT_BOOL)
-        arg = "1";
-
-    if (!po->name)
-        po = find_option(options, "default");
-    if (!po->name) {
-        av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
-        return AVERROR(EINVAL);
-    }
-    if (po->flags & HAS_ARG && !arg) {
-        av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
-        return AVERROR(EINVAL);
-    }
-
-    ret = write_option(optctx, po, opt, arg);
-    if (ret < 0)
-        return ret;
-
-    return !!(po->flags & HAS_ARG);
-}
-
-void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
-                   void (*parse_arg_function)(void *, const char*))
-{
-    const char *opt;
-    int optindex, handleoptions = 1, ret;
-
-    /* perform system-dependent conversions for arguments list */
-    prepare_app_arguments(&argc, &argv);
-
-    /* parse options */
-    optindex = 1;
-    while (optindex < argc) {
-        opt = argv[optindex++];
-
-        if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
-            if (opt[1] == '-' && opt[2] == '\0') {
-                handleoptions = 0;
-                continue;
-            }
-            opt++;
-
-            if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
-                exit_program(1);
-            optindex += ret;
-        } else {
-            if (parse_arg_function)
-                parse_arg_function(optctx, opt);
-        }
-    }
-}
-
-int parse_optgroup(void *optctx, OptionGroup *g)
-{
-    int i, ret;
-
-    av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
-           g->group_def->name, g->arg);
-
-    for (i = 0; i < g->nb_opts; i++) {
-        Option *o = &g->opts[i];
-
-        if (g->group_def->flags &&
-            !(g->group_def->flags & o->opt->flags)) {
-            av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
-                   "%s %s -- you are trying to apply an input option to an "
-                   "output file or vice versa. Move this option before the "
-                   "file it belongs to.\n", o->key, o->opt->help,
-                   g->group_def->name, g->arg);
-            return AVERROR(EINVAL);
-        }
-
-        av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
-               o->key, o->opt->help, o->val);
-
-        ret = write_option(optctx, o->opt, o->key, o->val);
-        if (ret < 0)
-            return ret;
-    }
-
-    av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
-
-    return 0;
-}
-
-int locate_option(int argc, char **argv, const OptionDef *options,
-                  const char *optname)
-{
-    const OptionDef *po;
-    int i;
-
-    for (i = 1; i < argc; i++) {
-        const char *cur_opt = argv[i];
-
-        if (*cur_opt++ != '-')
-            continue;
-
-        po = find_option(options, cur_opt);
-        if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
-            po = find_option(options, cur_opt + 2);
-
-        if ((!po->name && !strcmp(cur_opt, optname)) ||
-             (po->name && !strcmp(optname, po->name)))
-            return i;
-
-        if (!po->name || po->flags & HAS_ARG)
-            i++;
-    }
-    return 0;
-}
-
-static void dump_argument(const char *a)
-{
-    const unsigned char *p;
-
-    for (p = a; *p; p++)
-        if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
-              *p == '_' || (*p >= 'a' && *p <= 'z')))
-            break;
-    if (!*p) {
-        fputs(a, report_file);
-        return;
-    }
-    fputc('"', report_file);
-    for (p = a; *p; p++) {
-        if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
-            fprintf(report_file, "\\%c", *p);
-        else if (*p < ' ' || *p > '~')
-            fprintf(report_file, "\\x%02x", *p);
-        else
-            fputc(*p, report_file);
-    }
-    fputc('"', report_file);
-}
-
-static void check_options(const OptionDef *po)
-{
-    while (po->name) {
-        if (po->flags & OPT_PERFILE)
-            av_assert0(po->flags & (OPT_INPUT | OPT_OUTPUT));
-        po++;
-    }
-}
-
-void parse_loglevel(int argc, char **argv, const OptionDef *options)
-{
-    int idx = locate_option(argc, argv, options, "loglevel");
-    const char *env;
-
-    check_options(options);
-
-    if (!idx)
-        idx = locate_option(argc, argv, options, "v");
-    if (idx && argv[idx + 1])
-        opt_loglevel(NULL, "loglevel", argv[idx + 1]);
-    idx = locate_option(argc, argv, options, "report");
-    if ((env = getenv("FFREPORT")) || idx) {
-        init_report(env);
-        if (report_file) {
-            int i;
-            fprintf(report_file, "Command line:\n");
-            for (i = 0; i < argc; i++) {
-                dump_argument(argv[i]);
-                fputc(i < argc - 1 ? ' ' : '\n', report_file);
-            }
-            fflush(report_file);
-        }
-    }
-    idx = locate_option(argc, argv, options, "hide_banner");
-    if (idx)
-        hide_banner = 1;
-}
-
-static const AVOption *opt_find(void *obj, const char *name, const char *unit,
-                            int opt_flags, int search_flags)
-{
-    const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
-    if(o && !o->flags)
-        return NULL;
-    return o;
-}
-
-#define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
-int opt_default(void *optctx, const char *opt, const char *arg)
-{
-    const AVOption *o;
-    int consumed = 0;
-    char opt_stripped[128];
-    const char *p;
-    const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
-#if CONFIG_SWSCALE
-    const AVClass *sc = sws_get_class();
-#endif
-#if CONFIG_SWRESAMPLE
-    const AVClass *swr_class = swr_get_class();
-#endif
-
-    if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
-        av_log_set_level(AV_LOG_DEBUG);
-
-    if (!(p = strchr(opt, ':')))
-        p = opt + strlen(opt);
-    av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
-
-    if ((o = opt_find(&cc, opt_stripped, NULL, 0,
-                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
-        ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
-         (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
-        av_dict_set(&codec_opts, opt, arg, FLAGS);
-        consumed = 1;
-    }
-    if ((o = opt_find(&fc, opt, NULL, 0,
-                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
-        av_dict_set(&format_opts, opt, arg, FLAGS);
-        if (consumed)
-            av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
-        consumed = 1;
-    }
-#if CONFIG_SWSCALE
-    if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
-                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
-        struct SwsContext *sws = sws_alloc_context();
-        int ret = av_opt_set(sws, opt, arg, 0);
-        sws_freeContext(sws);
-        if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
-            !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
-            !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
-            av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
-            return AVERROR(EINVAL);
-        }
-        if (ret < 0) {
-            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
-            return ret;
-        }
-
-        av_dict_set(&sws_dict, opt, arg, FLAGS);
-
-        consumed = 1;
-    }
-#else
-    if (!consumed && !strcmp(opt, "sws_flags")) {
-        av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
-        consumed = 1;
-    }
-#endif
-#if CONFIG_SWRESAMPLE
-    if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
-                                    AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
-        struct SwrContext *swr = swr_alloc();
-        int ret = av_opt_set(swr, opt, arg, 0);
-        swr_free(&swr);
-        if (ret < 0) {
-            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
-            return ret;
-        }
-        av_dict_set(&swr_opts, opt, arg, FLAGS);
-        consumed = 1;
-    }
-#endif
-
-    if (consumed)
-        return 0;
-    return AVERROR_OPTION_NOT_FOUND;
-}
-
-/*
- * Check whether given option is a group separator.
- *
- * @return index of the group definition that matched or -1 if none
- */
-static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
-                                 const char *opt)
-{
-    int i;
-
-    for (i = 0; i < nb_groups; i++) {
-        const OptionGroupDef *p = &groups[i];
-        if (p->sep && !strcmp(p->sep, opt))
-            return i;
-    }
-
-    return -1;
-}
-
-/*
- * Finish parsing an option group.
- *
- * @param group_idx which group definition should this group belong to
- * @param arg argument of the group delimiting option
- */
-static void finish_group(OptionParseContext *octx, int group_idx,
-                         const char *arg)
-{
-    OptionGroupList *l = &octx->groups[group_idx];
-    OptionGroup *g;
-
-    GROW_ARRAY(l->groups, l->nb_groups);
-    g = &l->groups[l->nb_groups - 1];
-
-    *g             = octx->cur_group;
-    g->arg         = arg;
-    g->group_def   = l->group_def;
-    g->sws_dict    = sws_dict;
-    g->swr_opts    = swr_opts;
-    g->codec_opts  = codec_opts;
-    g->format_opts = format_opts;
-
-    codec_opts  = NULL;
-    format_opts = NULL;
-    sws_dict    = NULL;
-    swr_opts    = NULL;
-
-    memset(&octx->cur_group, 0, sizeof(octx->cur_group));
-}
-
-/*
- * Add an option instance to currently parsed group.
- */
-static void add_opt(OptionParseContext *octx, const OptionDef *opt,
-                    const char *key, const char *val)
-{
-    int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
-    OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
-
-    GROW_ARRAY(g->opts, g->nb_opts);
-    g->opts[g->nb_opts - 1].opt = opt;
-    g->opts[g->nb_opts - 1].key = key;
-    g->opts[g->nb_opts - 1].val = val;
-}
-
-static void init_parse_context(OptionParseContext *octx,
-                               const OptionGroupDef *groups, int nb_groups)
-{
-    static const OptionGroupDef global_group = { "global" };
-    int i;
-
-    memset(octx, 0, sizeof(*octx));
-
-    octx->nb_groups = nb_groups;
-    octx->groups    = av_calloc(octx->nb_groups, sizeof(*octx->groups));
-    if (!octx->groups)
-        exit_program(1);
-
-    for (i = 0; i < octx->nb_groups; i++)
-        octx->groups[i].group_def = &groups[i];
-
-    octx->global_opts.group_def = &global_group;
-    octx->global_opts.arg       = "";
-}
-
-void uninit_parse_context(OptionParseContext *octx)
-{
-    int i, j;
-
-    for (i = 0; i < octx->nb_groups; i++) {
-        OptionGroupList *l = &octx->groups[i];
-
-        for (j = 0; j < l->nb_groups; j++) {
-            av_freep(&l->groups[j].opts);
-            av_dict_free(&l->groups[j].codec_opts);
-            av_dict_free(&l->groups[j].format_opts);
-
-            av_dict_free(&l->groups[j].sws_dict);
-            av_dict_free(&l->groups[j].swr_opts);
-        }
-        av_freep(&l->groups);
-    }
-    av_freep(&octx->groups);
-
-    av_freep(&octx->cur_group.opts);
-    av_freep(&octx->global_opts.opts);
-
-    uninit_opts();
-}
-
-int split_commandline(OptionParseContext *octx, int argc, char *argv[],
-                      const OptionDef *options,
-                      const OptionGroupDef *groups, int nb_groups)
-{
-    int optindex = 1;
-    int dashdash = -2;
-
-    /* perform system-dependent conversions for arguments list */
-    prepare_app_arguments(&argc, &argv);
-
-    init_parse_context(octx, groups, nb_groups);
-    av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
-
-    while (optindex < argc) {
-        const char *opt = argv[optindex++], *arg;
-        const OptionDef *po;
-        int ret;
-
-        av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
-
-        if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
-            dashdash = optindex;
-            continue;
-        }
-        /* unnamed group separators, e.g. output filename */
-        if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
-            finish_group(octx, 0, opt);
-            av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
-            continue;
-        }
-        opt++;
-
-#define GET_ARG(arg)                                                           \
-do {                                                                           \
-    arg = argv[optindex++];                                                    \
-    if (!arg) {                                                                \
-        av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
-        return AVERROR(EINVAL);                                                \
-    }                                                                          \
-} while (0)
-
-        /* named group separators, e.g. -i */
-        if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
-            GET_ARG(arg);
-            finish_group(octx, ret, arg);
-            av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
-                   groups[ret].name, arg);
-            continue;
-        }
-
-        /* normal options */
-        po = find_option(options, opt);
-        if (po->name) {
-            if (po->flags & OPT_EXIT) {
-                /* optional argument, e.g. -h */
-                arg = argv[optindex++];
-            } else if (po->flags & HAS_ARG) {
-                GET_ARG(arg);
-            } else {
-                arg = "1";
-            }
-
-            add_opt(octx, po, opt, arg);
-            av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
-                   "argument '%s'.\n", po->name, po->help, arg);
-            continue;
-        }
-
-        /* AVOptions */
-        if (argv[optindex]) {
-            ret = opt_default(NULL, opt, argv[optindex]);
-            if (ret >= 0) {
-                av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
-                       "argument '%s'.\n", opt, argv[optindex]);
-                optindex++;
-                continue;
-            } else if (ret != AVERROR_OPTION_NOT_FOUND) {
-                av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
-                       "with argument '%s'.\n", opt, argv[optindex]);
-                return ret;
-            }
-        }
-
-        /* boolean -nofoo options */
-        if (opt[0] == 'n' && opt[1] == 'o' &&
-            (po = find_option(options, opt + 2)) &&
-            po->name && po->flags & OPT_BOOL) {
-            add_opt(octx, po, opt, "0");
-            av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
-                   "argument 0.\n", po->name, po->help);
-            continue;
-        }
-
-        av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
-        return AVERROR_OPTION_NOT_FOUND;
-    }
-
-    if (octx->cur_group.nb_opts || codec_opts || format_opts)
-        av_log(NULL, AV_LOG_WARNING, "Trailing option(s) found in the "
-               "command: may be ignored.\n");
-
-    av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
-
-    return 0;
-}
-
-int opt_cpuflags(void *optctx, const char *opt, const char *arg)
-{
-    int ret;
-    unsigned flags = av_get_cpu_flags();
-
-    if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
-        return ret;
-
-    av_force_cpu_flags(flags);
-    return 0;
-}
-
-int opt_cpucount(void *optctx, const char *opt, const char *arg)
-{
-    int ret;
-    int count;
-
-    static const AVOption opts[] = {
-        {"count", NULL, 0, AV_OPT_TYPE_INT, { .i64 = -1}, -1, INT_MAX},
-        {NULL},
-    };
-    static const AVClass class = {
-        .class_name = "cpucount",
-        .item_name  = av_default_item_name,
-        .option     = opts,
-        .version    = LIBAVUTIL_VERSION_INT,
-    };
-    const AVClass *pclass = &class;
-
-    ret = av_opt_eval_int(&pclass, opts, arg, &count);
-
-    if (!ret) {
-        av_cpu_force_count(count);
-    }
-
-    return ret;
-}
-
-int opt_loglevel(void *optctx, const char *opt, const char *arg)
-{
-    const struct { const char *name; int level; } log_levels[] = {
-        { "quiet"  , AV_LOG_QUIET   },
-        { "panic"  , AV_LOG_PANIC   },
-        { "fatal"  , AV_LOG_FATAL   },
-        { "error"  , AV_LOG_ERROR   },
-        { "warning", AV_LOG_WARNING },
-        { "info"   , AV_LOG_INFO    },
-        { "verbose", AV_LOG_VERBOSE },
-        { "debug"  , AV_LOG_DEBUG   },
-        { "trace"  , AV_LOG_TRACE   },
-    };
-    const char *token;
-    char *tail;
-    int flags = av_log_get_flags();
-    int level = av_log_get_level();
-    int cmd, i = 0;
-
-    av_assert0(arg);
-    while (*arg) {
-        token = arg;
-        if (*token == '+' || *token == '-') {
-            cmd = *token++;
-        } else {
-            cmd = 0;
-        }
-        if (!i && !cmd) {
-            flags = 0;  /* missing relative prefix, build absolute value */
-        }
-        if (av_strstart(token, "repeat", &arg)) {
-            if (cmd == '-') {
-                flags |= AV_LOG_SKIP_REPEATED;
-            } else {
-                flags &= ~AV_LOG_SKIP_REPEATED;
-            }
-        } else if (av_strstart(token, "level", &arg)) {
-            if (cmd == '-') {
-                flags &= ~AV_LOG_PRINT_LEVEL;
-            } else {
-                flags |= AV_LOG_PRINT_LEVEL;
-            }
-        } else {
-            break;
-        }
-        i++;
-    }
-    if (!*arg) {
-        goto end;
-    } else if (*arg == '+') {
-        arg++;
-    } else if (!i) {
-        flags = av_log_get_flags();  /* level value without prefix, reset flags */
-    }
-
-    for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
-        if (!strcmp(log_levels[i].name, arg)) {
-            level = log_levels[i].level;
-            goto end;
-        }
-    }
-
-    level = strtol(arg, &tail, 10);
-    if (*tail) {
-        av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
-               "Possible levels are numbers or:\n", arg);
-        for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
-            av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
-        exit_program(1);
-    }
-
-end:
-    av_log_set_flags(flags);
-    av_log_set_level(level);
-    return 0;
-}
-
-static void expand_filename_template(AVBPrint *bp, const char *template,
-                                     struct tm *tm)
-{
-    int c;
-
-    while ((c = *(template++))) {
-        if (c == '%') {
-            if (!(c = *(template++)))
-                break;
-            switch (c) {
-            case 'p':
-                av_bprintf(bp, "%s", program_name);
-                break;
-            case 't':
-                av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
-                           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
-                           tm->tm_hour, tm->tm_min, tm->tm_sec);
-                break;
-            case '%':
-                av_bprint_chars(bp, c, 1);
-                break;
-            }
-        } else {
-            av_bprint_chars(bp, c, 1);
-        }
-    }
-}
-
-static int init_report(const char *env)
-{
-    char *filename_template = NULL;
-    char *key, *val;
-    int ret, count = 0;
-    int prog_loglevel, envlevel = 0;
-    time_t now;
-    struct tm *tm;
-    AVBPrint filename;
-
-    if (report_file) /* already opened */
-        return 0;
-    time(&now);
-    tm = localtime(&now);
-
-    while (env && *env) {
-        if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
-            if (count)
-                av_log(NULL, AV_LOG_ERROR,
-                       "Failed to parse FFREPORT environment variable: %s\n",
-                       av_err2str(ret));
-            break;
-        }
-        if (*env)
-            env++;
-        count++;
-        if (!strcmp(key, "file")) {
-            av_free(filename_template);
-            filename_template = val;
-            val = NULL;
-        } else if (!strcmp(key, "level")) {
-            char *tail;
-            report_file_level = strtol(val, &tail, 10);
-            if (*tail) {
-                av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
-                exit_program(1);
-            }
-            envlevel = 1;
-        } else {
-            av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
-        }
-        av_free(val);
-        av_free(key);
-    }
-
-    av_bprint_init(&filename, 0, AV_BPRINT_SIZE_AUTOMATIC);
-    expand_filename_template(&filename,
-                             av_x_if_null(filename_template, "%p-%t.log"), tm);
-    av_free(filename_template);
-    if (!av_bprint_is_complete(&filename)) {
-        av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
-        return AVERROR(ENOMEM);
-    }
-
-    prog_loglevel = av_log_get_level();
-    if (!envlevel)
-        report_file_level = FFMAX(report_file_level, prog_loglevel);
-
-    report_file = fopen(filename.str, "w");
-    if (!report_file) {
-        int ret = AVERROR(errno);
-        av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
-               filename.str, strerror(errno));
-        return ret;
-    }
-    av_log_set_callback(log_callback_report);
-    av_log(NULL, AV_LOG_INFO,
-           "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
-           "Report written to \"%s\"\n"
-           "Log level: %d\n",
-           program_name,
-           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
-           tm->tm_hour, tm->tm_min, tm->tm_sec,
-           filename.str, report_file_level);
-    av_bprint_finalize(&filename, NULL);
-    return 0;
-}
-
-int opt_report(void *optctx, const char *opt, const char *arg)
-{
-    return init_report(NULL);
-}
-
-int opt_max_alloc(void *optctx, const char *opt, const char *arg)
-{
-    char *tail;
-    size_t max;
-
-    max = strtol(arg, &tail, 10);
-    if (*tail) {
-        av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
-        exit_program(1);
-    }
-    av_max_alloc(max);
-    return 0;
-}
-
-int opt_timelimit(void *optctx, const char *opt, const char *arg)
-{
-#if HAVE_SETRLIMIT
-    int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
-    struct rlimit rl = { lim, lim + 1 };
-    if (setrlimit(RLIMIT_CPU, &rl))
-        perror("setrlimit");
-#else
-    av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
-#endif
-    return 0;
-}
-
-void print_error(const char *filename, int err)
-{
-    char errbuf[128];
-    const char *errbuf_ptr = errbuf;
-
-    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
-        errbuf_ptr = strerror(AVUNERROR(err));
-    av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
-}
-
-static int warned_cfg = 0;
-
-#define INDENT        1
-#define SHOW_VERSION  2
-#define SHOW_CONFIG   4
-#define SHOW_COPYRIGHT 8
-
-#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)                  \
-    if (CONFIG_##LIBNAME) {                                             \
-        const char *indent = flags & INDENT? "  " : "";                 \
-        if (flags & SHOW_VERSION) {                                     \
-            unsigned int version = libname##_version();                 \
-            av_log(NULL, level,                                         \
-                   "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n",            \
-                   indent, #libname,                                    \
-                   LIB##LIBNAME##_VERSION_MAJOR,                        \
-                   LIB##LIBNAME##_VERSION_MINOR,                        \
-                   LIB##LIBNAME##_VERSION_MICRO,                        \
-                   AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
-                   AV_VERSION_MICRO(version));                          \
-        }                                                               \
-        if (flags & SHOW_CONFIG) {                                      \
-            const char *cfg = libname##_configuration();                \
-            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \
-                if (!warned_cfg) {                                      \
-                    av_log(NULL, level,                                 \
-                            "%sWARNING: library configuration mismatch\n", \
-                            indent);                                    \
-                    warned_cfg = 1;                                     \
-                }                                                       \
-                av_log(NULL, level, "%s%-11s configuration: %s\n",      \
-                        indent, #libname, cfg);                         \
-            }                                                           \
-        }                                                               \
-    }                                                                   \
-
-static void print_all_libs_info(int flags, int level)
-{
-    PRINT_LIB_INFO(avutil,     AVUTIL,     flags, level);
-    PRINT_LIB_INFO(avcodec,    AVCODEC,    flags, level);
-    PRINT_LIB_INFO(avformat,   AVFORMAT,   flags, level);
-    PRINT_LIB_INFO(avdevice,   AVDEVICE,   flags, level);
-    PRINT_LIB_INFO(avfilter,   AVFILTER,   flags, level);
-    PRINT_LIB_INFO(swscale,    SWSCALE,    flags, level);
-    PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
-    PRINT_LIB_INFO(postproc,   POSTPROC,   flags, level);
-}
-
-static void print_program_info(int flags, int level)
-{
-    const char *indent = flags & INDENT? "  " : "";
-
-    av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
-    if (flags & SHOW_COPYRIGHT)
-        av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
-               program_birth_year, CONFIG_THIS_YEAR);
-    av_log(NULL, level, "\n");
-    av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
+#include "config.h"
 
-    av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
-}
+#include <stdio.h>
 
-static void print_buildconf(int flags, int level)
-{
-    const char *indent = flags & INDENT ? "  " : "";
-    char str[] = { FFMPEG_CONFIGURATION };
-    char *conflist, *remove_tilde, *splitconf;
+#include "cmdutils.h"
+#include "opt_common.h"
 
-    // Change all the ' --' strings to '~--' so that
-    // they can be identified as tokens.
-    while ((conflist = strstr(str, " --")) != NULL) {
-        conflist[0] = '~';
-    }
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/bprint.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/cpu.h"
+#include "libavutil/dict.h"
+#include "libavutil/error.h"
+#include "libavutil/ffversion.h"
+#include "libavutil/log.h"
+#include "libavutil/mem.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/version.h"
 
-    // Compensate for the weirdness this would cause
-    // when passing 'pkg-config --static'.
-    while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
-        remove_tilde[sizeof("pkg-config~") - 2] = ' ';
-    }
+#include "libavcodec/avcodec.h"
+#include "libavcodec/bsf.h"
+#include "libavcodec/codec.h"
+#include "libavcodec/codec_desc.h"
+#include "libavcodec/version.h"
 
-    splitconf = strtok(str, "~");
-    av_log(NULL, level, "\n%sconfiguration:\n", indent);
-    while (splitconf != NULL) {
-        av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
-        splitconf = strtok(NULL, "~");
-    }
-}
+#include "libavformat/avformat.h"
+#include "libavformat/version.h"
 
-void show_banner(int argc, char **argv, const OptionDef *options)
-{
-    int idx = locate_option(argc, argv, options, "version");
-    if (hide_banner || idx)
-        return;
+#include "libavdevice/avdevice.h"
+#include "libavdevice/version.h"
 
-    print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
-    print_all_libs_info(INDENT|SHOW_CONFIG,  AV_LOG_INFO);
-    print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
-}
+#include "libswscale/swscale.h"
+#include "libswscale/version.h"
 
-int show_version(void *optctx, const char *opt, const char *arg)
-{
-    av_log_set_callback(log_callback_help);
-    print_program_info (SHOW_COPYRIGHT, AV_LOG_INFO);
-    print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
+#include "libswresample/swresample.h"
+#include "libswresample/version.h"
 
-    return 0;
-}
+#include "libpostproc/postprocess.h"
+#include "libpostproc/version.h"
 
-int show_buildconf(void *optctx, const char *opt, const char *arg)
-{
-    av_log_set_callback(log_callback_help);
-    print_buildconf      (INDENT|0, AV_LOG_INFO);
+enum show_muxdemuxers {
+    SHOW_DEFAULT,
+    SHOW_DEMUXERS,
+    SHOW_MUXERS,
+};
 
-    return 0;
-}
+static FILE *report_file;
+static int report_file_level = AV_LOG_DEBUG;
 
 int show_license(void *optctx, const char *opt, const char *arg)
 {
@@ -1284,94 +143,120 @@ int show_license(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
-static int is_device(const AVClass *avclass)
+static int warned_cfg = 0;
+
+#define INDENT        1
+#define SHOW_VERSION  2
+#define SHOW_CONFIG   4
+#define SHOW_COPYRIGHT 8
+
+#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)                  \
+    if (CONFIG_##LIBNAME) {                                             \
+        const char *indent = flags & INDENT? "  " : "";                 \
+        if (flags & SHOW_VERSION) {                                     \
+            unsigned int version = libname##_version();                 \
+            av_log(NULL, level,                                         \
+                   "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n",            \
+                   indent, #libname,                                    \
+                   LIB##LIBNAME##_VERSION_MAJOR,                        \
+                   LIB##LIBNAME##_VERSION_MINOR,                        \
+                   LIB##LIBNAME##_VERSION_MICRO,                        \
+                   AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
+                   AV_VERSION_MICRO(version));                          \
+        }                                                               \
+        if (flags & SHOW_CONFIG) {                                      \
+            const char *cfg = libname##_configuration();                \
+            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \
+                if (!warned_cfg) {                                      \
+                    av_log(NULL, level,                                 \
+                            "%sWARNING: library configuration mismatch\n", \
+                            indent);                                    \
+                    warned_cfg = 1;                                     \
+                }                                                       \
+                av_log(NULL, level, "%s%-11s configuration: %s\n",      \
+                        indent, #libname, cfg);                         \
+            }                                                           \
+        }                                                               \
+    }                                                                   \
+
+static void print_all_libs_info(int flags, int level)
 {
-    if (!avclass)
-        return 0;
-    return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
+    PRINT_LIB_INFO(avutil,     AVUTIL,     flags, level);
+    PRINT_LIB_INFO(avcodec,    AVCODEC,    flags, level);
+    PRINT_LIB_INFO(avformat,   AVFORMAT,   flags, level);
+    PRINT_LIB_INFO(avdevice,   AVDEVICE,   flags, level);
+    PRINT_LIB_INFO(avfilter,   AVFILTER,   flags, level);
+    PRINT_LIB_INFO(swscale,    SWSCALE,    flags, level);
+    PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
+    PRINT_LIB_INFO(postproc,   POSTPROC,   flags, level);
+}
+
+static void print_program_info(int flags, int level)
+{
+    const char *indent = flags & INDENT? "  " : "";
+
+    av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
+    if (flags & SHOW_COPYRIGHT)
+        av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
+               program_birth_year, CONFIG_THIS_YEAR);
+    av_log(NULL, level, "\n");
+    av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
+
+    av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
 }
 
-static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
+static void print_buildconf(int flags, int level)
 {
-    void *ifmt_opaque = NULL;
-    const AVInputFormat *ifmt  = NULL;
-    void *ofmt_opaque = NULL;
-    const AVOutputFormat *ofmt = NULL;
-    const char *last_name;
-    int is_dev;
+    const char *indent = flags & INDENT ? "  " : "";
+    char str[] = { FFMPEG_CONFIGURATION };
+    char *conflist, *remove_tilde, *splitconf;
 
-    printf("%s\n"
-           " D. = Demuxing supported\n"
-           " .E = Muxing supported\n"
-           " --\n", device_only ? "Devices:" : "File formats:");
-    last_name = "000";
-    for (;;) {
-        int decode = 0;
-        int encode = 0;
-        const char *name      = NULL;
-        const char *long_name = NULL;
+    // Change all the ' --' strings to '~--' so that
+    // they can be identified as tokens.
+    while ((conflist = strstr(str, " --")) != NULL) {
+        conflist[0] = '~';
+    }
 
-        if (muxdemuxers !=SHOW_DEMUXERS) {
-            ofmt_opaque = NULL;
-            while ((ofmt = av_muxer_iterate(&ofmt_opaque))) {
-                is_dev = is_device(ofmt->priv_class);
-                if (!is_dev && device_only)
-                    continue;
-                if ((!name || strcmp(ofmt->name, name) < 0) &&
-                    strcmp(ofmt->name, last_name) > 0) {
-                    name      = ofmt->name;
-                    long_name = ofmt->long_name;
-                    encode    = 1;
-                }
-            }
-        }
-        if (muxdemuxers != SHOW_MUXERS) {
-            ifmt_opaque = NULL;
-            while ((ifmt = av_demuxer_iterate(&ifmt_opaque))) {
-                is_dev = is_device(ifmt->priv_class);
-                if (!is_dev && device_only)
-                    continue;
-                if ((!name || strcmp(ifmt->name, name) < 0) &&
-                    strcmp(ifmt->name, last_name) > 0) {
-                    name      = ifmt->name;
-                    long_name = ifmt->long_name;
-                    encode    = 0;
-                }
-                if (name && strcmp(ifmt->name, name) == 0)
-                    decode = 1;
-            }
-        }
-        if (!name)
-            break;
-        last_name = name;
+    // Compensate for the weirdness this would cause
+    // when passing 'pkg-config --static'.
+    while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
+        remove_tilde[sizeof("pkg-config~") - 2] = ' ';
+    }
 
-        printf(" %c%c %-15s %s\n",
-               decode ? 'D' : ' ',
-               encode ? 'E' : ' ',
-               name,
-            long_name ? long_name:" ");
+    splitconf = strtok(str, "~");
+    av_log(NULL, level, "\n%sconfiguration:\n", indent);
+    while (splitconf != NULL) {
+        av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
+        splitconf = strtok(NULL, "~");
     }
-    return 0;
 }
 
-int show_formats(void *optctx, const char *opt, const char *arg)
+void show_banner(int argc, char **argv, const OptionDef *options)
 {
-    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
-}
+    int idx = locate_option(argc, argv, options, "version");
+    if (hide_banner || idx)
+        return;
 
-int show_muxers(void *optctx, const char *opt, const char *arg)
-{
-    return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
+    print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
+    print_all_libs_info(INDENT|SHOW_CONFIG,  AV_LOG_INFO);
+    print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
 }
 
-int show_demuxers(void *optctx, const char *opt, const char *arg)
+int show_version(void *optctx, const char *opt, const char *arg)
 {
-    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
+    av_log_set_callback(log_callback_help);
+    print_program_info (SHOW_COPYRIGHT, AV_LOG_INFO);
+    print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
+
+    return 0;
 }
 
-int show_devices(void *optctx, const char *opt, const char *arg)
+int show_buildconf(void *optctx, const char *opt, const char *arg)
 {
-    return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
+    av_log_set_callback(log_callback_help);
+    print_buildconf      (INDENT|0, AV_LOG_INFO);
+
+    return 0;
 }
 
 #define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
@@ -1454,54 +339,273 @@ static void print_codec(const AVCodec *c)
         printf("\n");
     }
 
-    if (c->supported_framerates) {
-        const AVRational *fps = c->supported_framerates;
+    if (c->supported_framerates) {
+        const AVRational *fps = c->supported_framerates;
+
+        printf("    Supported framerates:");
+        while (fps->num) {
+            printf(" %d/%d", fps->num, fps->den);
+            fps++;
+        }
+        printf("\n");
+    }
+    PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
+                          AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
+    PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
+                          GET_SAMPLE_RATE_NAME);
+    PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
+                          AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
+    PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
+                          0, GET_CH_LAYOUT_DESC);
+
+    if (c->priv_class) {
+        show_help_children(c->priv_class,
+                           AV_OPT_FLAG_ENCODING_PARAM |
+                           AV_OPT_FLAG_DECODING_PARAM);
+    }
+}
+
+static const AVCodec *next_codec_for_id(enum AVCodecID id, void **iter,
+                                        int encoder)
+{
+    const AVCodec *c;
+    while ((c = av_codec_iterate(iter))) {
+        if (c->id == id &&
+            (encoder ? av_codec_is_encoder(c) : av_codec_is_decoder(c)))
+            return c;
+    }
+    return NULL;
+}
+
+static void show_help_codec(const char *name, int encoder)
+{
+    const AVCodecDescriptor *desc;
+    const AVCodec *codec;
+
+    if (!name) {
+        av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
+        return;
+    }
+
+    codec = encoder ? avcodec_find_encoder_by_name(name) :
+                      avcodec_find_decoder_by_name(name);
+
+    if (codec)
+        print_codec(codec);
+    else if ((desc = avcodec_descriptor_get_by_name(name))) {
+        void *iter = NULL;
+        int printed = 0;
+
+        while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
+            printed = 1;
+            print_codec(codec);
+        }
+
+        if (!printed) {
+            av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
+                   "but no %s for it are available. FFmpeg might need to be "
+                   "recompiled with additional external libraries.\n",
+                   name, encoder ? "encoders" : "decoders");
+        }
+    } else {
+        av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
+               name);
+    }
+}
+
+static void show_help_demuxer(const char *name)
+{
+    const AVInputFormat *fmt = av_find_input_format(name);
+
+    if (!fmt) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
+        return;
+    }
+
+    printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
+
+    if (fmt->extensions)
+        printf("    Common extensions: %s.\n", fmt->extensions);
+
+    if (fmt->priv_class)
+        show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
+}
+
+static void show_help_protocol(const char *name)
+{
+    const AVClass *proto_class;
+
+    if (!name) {
+        av_log(NULL, AV_LOG_ERROR, "No protocol name specified.\n");
+        return;
+    }
+
+    proto_class = avio_protocol_get_class(name);
+    if (!proto_class) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown protocol '%s'.\n", name);
+        return;
+    }
+
+    show_help_children(proto_class, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
+}
+
+static void show_help_muxer(const char *name)
+{
+    const AVCodecDescriptor *desc;
+    const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
+
+    if (!fmt) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
+        return;
+    }
+
+    printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
+
+    if (fmt->extensions)
+        printf("    Common extensions: %s.\n", fmt->extensions);
+    if (fmt->mime_type)
+        printf("    Mime type: %s.\n", fmt->mime_type);
+    if (fmt->video_codec != AV_CODEC_ID_NONE &&
+        (desc = avcodec_descriptor_get(fmt->video_codec))) {
+        printf("    Default video codec: %s.\n", desc->name);
+    }
+    if (fmt->audio_codec != AV_CODEC_ID_NONE &&
+        (desc = avcodec_descriptor_get(fmt->audio_codec))) {
+        printf("    Default audio codec: %s.\n", desc->name);
+    }
+    if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
+        (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
+        printf("    Default subtitle codec: %s.\n", desc->name);
+    }
+
+    if (fmt->priv_class)
+        show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
+}
+
+#if CONFIG_AVFILTER
+static void show_help_filter(const char *name)
+{
+#if CONFIG_AVFILTER
+    const AVFilter *f = avfilter_get_by_name(name);
+    int i, count;
+
+    if (!name) {
+        av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
+        return;
+    } else if (!f) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
+        return;
+    }
+
+    printf("Filter %s\n", f->name);
+    if (f->description)
+        printf("  %s\n", f->description);
 
-        printf("    Supported framerates:");
-        while (fps->num) {
-            printf(" %d/%d", fps->num, fps->den);
-            fps++;
-        }
-        printf("\n");
+    if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
+        printf("    slice threading supported\n");
+
+    printf("    Inputs:\n");
+    count = avfilter_filter_pad_count(f, 0);
+    for (i = 0; i < count; i++) {
+        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
+               av_get_media_type_string(avfilter_pad_get_type(f->inputs, i)));
     }
-    PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
-                          AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
-    PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
-                          GET_SAMPLE_RATE_NAME);
-    PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
-                          AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
-    PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
-                          0, GET_CH_LAYOUT_DESC);
+    if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
+        printf("        dynamic (depending on the options)\n");
+    else if (!count)
+        printf("        none (source filter)\n");
 
-    if (c->priv_class) {
-        show_help_children(c->priv_class,
-                           AV_OPT_FLAG_ENCODING_PARAM |
-                           AV_OPT_FLAG_DECODING_PARAM);
+    printf("    Outputs:\n");
+    count = avfilter_filter_pad_count(f, 1);
+    for (i = 0; i < count; i++) {
+        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
+               av_get_media_type_string(avfilter_pad_get_type(f->outputs, i)));
     }
+    if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
+        printf("        dynamic (depending on the options)\n");
+    else if (!count)
+        printf("        none (sink filter)\n");
+
+    if (f->priv_class)
+        show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
+                                          AV_OPT_FLAG_AUDIO_PARAM);
+    if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
+        printf("This filter has support for timeline through the 'enable' option.\n");
+#else
+    av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
+           "can not to satisfy request\n");
+#endif
 }
+#endif
 
-static char get_media_type_char(enum AVMediaType type)
+static void show_help_bsf(const char *name)
 {
-    switch (type) {
-        case AVMEDIA_TYPE_VIDEO:    return 'V';
-        case AVMEDIA_TYPE_AUDIO:    return 'A';
-        case AVMEDIA_TYPE_DATA:     return 'D';
-        case AVMEDIA_TYPE_SUBTITLE: return 'S';
-        case AVMEDIA_TYPE_ATTACHMENT:return 'T';
-        default:                    return '?';
+    const AVBitStreamFilter *bsf = av_bsf_get_by_name(name);
+
+    if (!name) {
+        av_log(NULL, AV_LOG_ERROR, "No bitstream filter name specified.\n");
+        return;
+    } else if (!bsf) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown bit stream filter '%s'.\n", name);
+        return;
     }
+
+    printf("Bit stream filter %s\n", bsf->name);
+    PRINT_CODEC_SUPPORTED(bsf, codec_ids, enum AVCodecID, "codecs",
+                          AV_CODEC_ID_NONE, GET_CODEC_NAME);
+    if (bsf->priv_class)
+        show_help_children(bsf->priv_class, AV_OPT_FLAG_BSF_PARAM);
 }
 
-static const AVCodec *next_codec_for_id(enum AVCodecID id, void **iter,
-                                        int encoder)
+int show_help(void *optctx, const char *opt, const char *arg)
 {
-    const AVCodec *c;
-    while ((c = av_codec_iterate(iter))) {
-        if (c->id == id &&
-            (encoder ? av_codec_is_encoder(c) : av_codec_is_decoder(c)))
-            return c;
+    char *topic, *par;
+    av_log_set_callback(log_callback_help);
+
+    topic = av_strdup(arg ? arg : "");
+    if (!topic)
+        return AVERROR(ENOMEM);
+    par = strchr(topic, '=');
+    if (par)
+        *par++ = 0;
+
+    if (!*topic) {
+        show_help_default(topic, par);
+    } else if (!strcmp(topic, "decoder")) {
+        show_help_codec(par, 0);
+    } else if (!strcmp(topic, "encoder")) {
+        show_help_codec(par, 1);
+    } else if (!strcmp(topic, "demuxer")) {
+        show_help_demuxer(par);
+    } else if (!strcmp(topic, "muxer")) {
+        show_help_muxer(par);
+    } else if (!strcmp(topic, "protocol")) {
+        show_help_protocol(par);
+#if CONFIG_AVFILTER
+    } else if (!strcmp(topic, "filter")) {
+        show_help_filter(par);
+#endif
+    } else if (!strcmp(topic, "bsf")) {
+        show_help_bsf(par);
+    } else {
+        show_help_default(topic, par);
     }
-    return NULL;
+
+    av_freep(&topic);
+    return 0;
+}
+
+static void print_codecs_for_id(enum AVCodecID id, int encoder)
+{
+    void *iter = NULL;
+    const AVCodec *codec;
+
+    printf(" (%s: ", encoder ? "encoders" : "decoders");
+
+    while ((codec = next_codec_for_id(id, &iter, encoder)))
+        printf("%s ", codec->name);
+
+    printf(")");
 }
 
 static int compare_codec_desc(const void *a, const void *b)
@@ -1534,17 +638,16 @@ static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
     return nb_codecs;
 }
 
-static void print_codecs_for_id(enum AVCodecID id, int encoder)
+static char get_media_type_char(enum AVMediaType type)
 {
-    void *iter = NULL;
-    const AVCodec *codec;
-
-    printf(" (%s: ", encoder ? "encoders" : "decoders");
-
-    while ((codec = next_codec_for_id(id, &iter, encoder)))
-        printf("%s ", codec->name);
-
-    printf(")");
+    switch (type) {
+        case AVMEDIA_TYPE_VIDEO:    return 'V';
+        case AVMEDIA_TYPE_AUDIO:    return 'A';
+        case AVMEDIA_TYPE_DATA:     return 'D';
+        case AVMEDIA_TYPE_SUBTITLE: return 'S';
+        case AVMEDIA_TYPE_ATTACHMENT:return 'T';
+        default:                    return '?';
+    }
 }
 
 int show_codecs(void *optctx, const char *opt, const char *arg)
@@ -1666,21 +769,6 @@ int show_bsfs(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
-int show_protocols(void *optctx, const char *opt, const char *arg)
-{
-    void *opaque = NULL;
-    const char *name;
-
-    printf("Supported file protocols:\n"
-           "Input:\n");
-    while ((name = avio_enum_protocols(&opaque, 0)))
-        printf("  %s\n", name);
-    printf("Output:\n");
-    while ((name = avio_enum_protocols(&opaque, 1)))
-        printf("  %s\n", name);
-    return 0;
-}
-
 int show_filters(void *optctx, const char *opt, const char *arg)
 {
 #if CONFIG_AVFILTER
@@ -1730,6 +818,111 @@ int show_filters(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
+static int is_device(const AVClass *avclass)
+{
+    if (!avclass)
+        return 0;
+    return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
+}
+
+static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
+{
+    void *ifmt_opaque = NULL;
+    const AVInputFormat *ifmt  = NULL;
+    void *ofmt_opaque = NULL;
+    const AVOutputFormat *ofmt = NULL;
+    const char *last_name;
+    int is_dev;
+
+    printf("%s\n"
+           " D. = Demuxing supported\n"
+           " .E = Muxing supported\n"
+           " --\n", device_only ? "Devices:" : "File formats:");
+    last_name = "000";
+    for (;;) {
+        int decode = 0;
+        int encode = 0;
+        const char *name      = NULL;
+        const char *long_name = NULL;
+
+        if (muxdemuxers !=SHOW_DEMUXERS) {
+            ofmt_opaque = NULL;
+            while ((ofmt = av_muxer_iterate(&ofmt_opaque))) {
+                is_dev = is_device(ofmt->priv_class);
+                if (!is_dev && device_only)
+                    continue;
+                if ((!name || strcmp(ofmt->name, name) < 0) &&
+                    strcmp(ofmt->name, last_name) > 0) {
+                    name      = ofmt->name;
+                    long_name = ofmt->long_name;
+                    encode    = 1;
+                }
+            }
+        }
+        if (muxdemuxers != SHOW_MUXERS) {
+            ifmt_opaque = NULL;
+            while ((ifmt = av_demuxer_iterate(&ifmt_opaque))) {
+                is_dev = is_device(ifmt->priv_class);
+                if (!is_dev && device_only)
+                    continue;
+                if ((!name || strcmp(ifmt->name, name) < 0) &&
+                    strcmp(ifmt->name, last_name) > 0) {
+                    name      = ifmt->name;
+                    long_name = ifmt->long_name;
+                    encode    = 0;
+                }
+                if (name && strcmp(ifmt->name, name) == 0)
+                    decode = 1;
+            }
+        }
+        if (!name)
+            break;
+        last_name = name;
+
+        printf(" %c%c %-15s %s\n",
+               decode ? 'D' : ' ',
+               encode ? 'E' : ' ',
+               name,
+            long_name ? long_name:" ");
+    }
+    return 0;
+}
+
+int show_formats(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
+}
+
+int show_muxers(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
+}
+
+int show_demuxers(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
+}
+
+int show_devices(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
+}
+
+int show_protocols(void *optctx, const char *opt, const char *arg)
+{
+    void *opaque = NULL;
+    const char *name;
+
+    printf("Supported file protocols:\n"
+           "Input:\n");
+    while ((name = avio_enum_protocols(&opaque, 0)))
+        printf("  %s\n", name);
+    printf("Output:\n");
+    while ((name = avio_enum_protocols(&opaque, 1)))
+        printf("  %s\n", name);
+    return 0;
+}
+
 int show_colors(void *optctx, const char *opt, const char *arg)
 {
     const char *name;
@@ -1808,439 +1001,286 @@ int show_layouts(void *optctx, const char *opt, const char *arg)
             printf("\n");
         }
     }
-    return 0;
-}
-
-int show_sample_fmts(void *optctx, const char *opt, const char *arg)
-{
-    int i;
-    char fmt_str[128];
-    for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
-        printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
-    return 0;
-}
-
-int show_dispositions(void *optctx, const char *opt, const char *arg)
-{
-    for (int i = 0; i < 32; i++) {
-        const char *str = av_disposition_to_string(1U << i);
-        if (str)
-            printf("%s\n", str);
-    }
-    return 0;
-}
-
-static void show_help_codec(const char *name, int encoder)
-{
-    const AVCodecDescriptor *desc;
-    const AVCodec *codec;
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
-        return;
-    }
-
-    codec = encoder ? avcodec_find_encoder_by_name(name) :
-                      avcodec_find_decoder_by_name(name);
-
-    if (codec)
-        print_codec(codec);
-    else if ((desc = avcodec_descriptor_get_by_name(name))) {
-        void *iter = NULL;
-        int printed = 0;
-
-        while ((codec = next_codec_for_id(desc->id, &iter, encoder))) {
-            printed = 1;
-            print_codec(codec);
-        }
-
-        if (!printed) {
-            av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
-                   "but no %s for it are available. FFmpeg might need to be "
-                   "recompiled with additional external libraries.\n",
-                   name, encoder ? "encoders" : "decoders");
-        }
-    } else {
-        av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
-               name);
-    }
-}
-
-static void show_help_demuxer(const char *name)
-{
-    const AVInputFormat *fmt = av_find_input_format(name);
-
-    if (!fmt) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
-        return;
-    }
-
-    printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
-
-    if (fmt->extensions)
-        printf("    Common extensions: %s.\n", fmt->extensions);
-
-    if (fmt->priv_class)
-        show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
-}
-
-static void show_help_protocol(const char *name)
-{
-    const AVClass *proto_class;
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No protocol name specified.\n");
-        return;
-    }
-
-    proto_class = avio_protocol_get_class(name);
-    if (!proto_class) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown protocol '%s'.\n", name);
-        return;
-    }
-
-    show_help_children(proto_class, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM);
-}
-
-static void show_help_muxer(const char *name)
-{
-    const AVCodecDescriptor *desc;
-    const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
-
-    if (!fmt) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
-        return;
-    }
-
-    printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
-
-    if (fmt->extensions)
-        printf("    Common extensions: %s.\n", fmt->extensions);
-    if (fmt->mime_type)
-        printf("    Mime type: %s.\n", fmt->mime_type);
-    if (fmt->video_codec != AV_CODEC_ID_NONE &&
-        (desc = avcodec_descriptor_get(fmt->video_codec))) {
-        printf("    Default video codec: %s.\n", desc->name);
-    }
-    if (fmt->audio_codec != AV_CODEC_ID_NONE &&
-        (desc = avcodec_descriptor_get(fmt->audio_codec))) {
-        printf("    Default audio codec: %s.\n", desc->name);
-    }
-    if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
-        (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
-        printf("    Default subtitle codec: %s.\n", desc->name);
-    }
-
-    if (fmt->priv_class)
-        show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
-}
-
-#if CONFIG_AVFILTER
-static void show_help_filter(const char *name)
-{
-#if CONFIG_AVFILTER
-    const AVFilter *f = avfilter_get_by_name(name);
-    int i, count;
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
-        return;
-    } else if (!f) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
-        return;
-    }
-
-    printf("Filter %s\n", f->name);
-    if (f->description)
-        printf("  %s\n", f->description);
-
-    if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
-        printf("    slice threading supported\n");
-
-    printf("    Inputs:\n");
-    count = avfilter_filter_pad_count(f, 0);
-    for (i = 0; i < count; i++) {
-        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
-               av_get_media_type_string(avfilter_pad_get_type(f->inputs, i)));
-    }
-    if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
-        printf("        dynamic (depending on the options)\n");
-    else if (!count)
-        printf("        none (source filter)\n");
-
-    printf("    Outputs:\n");
-    count = avfilter_filter_pad_count(f, 1);
-    for (i = 0; i < count; i++) {
-        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
-               av_get_media_type_string(avfilter_pad_get_type(f->outputs, i)));
-    }
-    if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
-        printf("        dynamic (depending on the options)\n");
-    else if (!count)
-        printf("        none (sink filter)\n");
-
-    if (f->priv_class)
-        show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
-                                          AV_OPT_FLAG_AUDIO_PARAM);
-    if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
-        printf("This filter has support for timeline through the 'enable' option.\n");
-#else
-    av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
-           "can not to satisfy request\n");
-#endif
-}
-#endif
-
-static void show_help_bsf(const char *name)
-{
-    const AVBitStreamFilter *bsf = av_bsf_get_by_name(name);
-
-    if (!name) {
-        av_log(NULL, AV_LOG_ERROR, "No bitstream filter name specified.\n");
-        return;
-    } else if (!bsf) {
-        av_log(NULL, AV_LOG_ERROR, "Unknown bit stream filter '%s'.\n", name);
-        return;
-    }
-
-    printf("Bit stream filter %s\n", bsf->name);
-    PRINT_CODEC_SUPPORTED(bsf, codec_ids, enum AVCodecID, "codecs",
-                          AV_CODEC_ID_NONE, GET_CODEC_NAME);
-    if (bsf->priv_class)
-        show_help_children(bsf->priv_class, AV_OPT_FLAG_BSF_PARAM);
-}
-
-int show_help(void *optctx, const char *opt, const char *arg)
-{
-    char *topic, *par;
-    av_log_set_callback(log_callback_help);
-
-    topic = av_strdup(arg ? arg : "");
-    if (!topic)
-        return AVERROR(ENOMEM);
-    par = strchr(topic, '=');
-    if (par)
-        *par++ = 0;
-
-    if (!*topic) {
-        show_help_default(topic, par);
-    } else if (!strcmp(topic, "decoder")) {
-        show_help_codec(par, 0);
-    } else if (!strcmp(topic, "encoder")) {
-        show_help_codec(par, 1);
-    } else if (!strcmp(topic, "demuxer")) {
-        show_help_demuxer(par);
-    } else if (!strcmp(topic, "muxer")) {
-        show_help_muxer(par);
-    } else if (!strcmp(topic, "protocol")) {
-        show_help_protocol(par);
-#if CONFIG_AVFILTER
-    } else if (!strcmp(topic, "filter")) {
-        show_help_filter(par);
-#endif
-    } else if (!strcmp(topic, "bsf")) {
-        show_help_bsf(par);
-    } else {
-        show_help_default(topic, par);
-    }
+    return 0;
+}
 
-    av_freep(&topic);
+int show_sample_fmts(void *optctx, const char *opt, const char *arg)
+{
+    int i;
+    char fmt_str[128];
+    for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
+        printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
+    return 0;
+}
+
+int show_dispositions(void *optctx, const char *opt, const char *arg)
+{
+    for (int i = 0; i < 32; i++) {
+        const char *str = av_disposition_to_string(1U << i);
+        if (str)
+            printf("%s\n", str);
+    }
     return 0;
 }
 
-int read_yesno(void)
+int opt_cpuflags(void *optctx, const char *opt, const char *arg)
 {
-    int c = getchar();
-    int yesno = (av_toupper(c) == 'Y');
+    int ret;
+    unsigned flags = av_get_cpu_flags();
 
-    while (c != '\n' && c != EOF)
-        c = getchar();
+    if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
+        return ret;
 
-    return yesno;
+    av_force_cpu_flags(flags);
+    return 0;
 }
 
-FILE *get_preset_file(char *filename, size_t filename_size,
-                      const char *preset_name, int is_path,
-                      const char *codec_name)
+int opt_cpucount(void *optctx, const char *opt, const char *arg)
 {
-    FILE *f = NULL;
-    int i;
-    const char *base[3] = { getenv("FFMPEG_DATADIR"),
-                            getenv("HOME"),
-                            FFMPEG_DATADIR, };
+    int ret;
+    int count;
 
-    if (is_path) {
-        av_strlcpy(filename, preset_name, filename_size);
-        f = fopen(filename, "r");
-    } else {
-#if HAVE_GETMODULEHANDLE && defined(_WIN32)
-        char datadir[MAX_PATH], *ls;
-        base[2] = NULL;
-
-        if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
-        {
-            for (ls = datadir; ls < datadir + strlen(datadir); ls++)
-                if (*ls == '\\') *ls = '/';
-
-            if (ls = strrchr(datadir, '/'))
-            {
-                *ls = 0;
-                strncat(datadir, "/ffpresets",  sizeof(datadir) - 1 - strlen(datadir));
-                base[2] = datadir;
-            }
-        }
-#endif
-        for (i = 0; i < 3 && !f; i++) {
-            if (!base[i])
-                continue;
-            snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
-                     i != 1 ? "" : "/.ffmpeg", preset_name);
-            f = fopen(filename, "r");
-            if (!f && codec_name) {
-                snprintf(filename, filename_size,
-                         "%s%s/%s-%s.ffpreset",
-                         base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
-                         preset_name);
-                f = fopen(filename, "r");
-            }
-        }
+    static const AVOption opts[] = {
+        {"count", NULL, 0, AV_OPT_TYPE_INT, { .i64 = -1}, -1, INT_MAX},
+        {NULL},
+    };
+    static const AVClass class = {
+        .class_name = "cpucount",
+        .item_name  = av_default_item_name,
+        .option     = opts,
+        .version    = LIBAVUTIL_VERSION_INT,
+    };
+    const AVClass *pclass = &class;
+
+    ret = av_opt_eval_int(&pclass, opts, arg, &count);
+
+    if (!ret) {
+        av_cpu_force_count(count);
     }
 
-    return f;
+    return ret;
 }
 
-int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
+static void expand_filename_template(AVBPrint *bp, const char *template,
+                                     struct tm *tm)
 {
-    int ret = avformat_match_stream_specifier(s, st, spec);
-    if (ret < 0)
-        av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
-    return ret;
+    int c;
+
+    while ((c = *(template++))) {
+        if (c == '%') {
+            if (!(c = *(template++)))
+                break;
+            switch (c) {
+            case 'p':
+                av_bprintf(bp, "%s", program_name);
+                break;
+            case 't':
+                av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
+                           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+                           tm->tm_hour, tm->tm_min, tm->tm_sec);
+                break;
+            case '%':
+                av_bprint_chars(bp, c, 1);
+                break;
+            }
+        } else {
+            av_bprint_chars(bp, c, 1);
+        }
+    }
 }
 
-AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
-                                AVFormatContext *s, AVStream *st, const AVCodec *codec)
+static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
 {
-    AVDictionary    *ret = NULL;
-    const AVDictionaryEntry *t = NULL;
-    int            flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
-                                      : AV_OPT_FLAG_DECODING_PARAM;
-    char          prefix = 0;
-    const AVClass    *cc = avcodec_get_class();
-
-    if (!codec)
-        codec            = s->oformat ? avcodec_find_encoder(codec_id)
-                                      : avcodec_find_decoder(codec_id);
-
-    switch (st->codecpar->codec_type) {
-    case AVMEDIA_TYPE_VIDEO:
-        prefix  = 'v';
-        flags  |= AV_OPT_FLAG_VIDEO_PARAM;
-        break;
-    case AVMEDIA_TYPE_AUDIO:
-        prefix  = 'a';
-        flags  |= AV_OPT_FLAG_AUDIO_PARAM;
-        break;
-    case AVMEDIA_TYPE_SUBTITLE:
-        prefix  = 's';
-        flags  |= AV_OPT_FLAG_SUBTITLE_PARAM;
-        break;
+    va_list vl2;
+    char line[1024];
+    static int print_prefix = 1;
+
+    va_copy(vl2, vl);
+    av_log_default_callback(ptr, level, fmt, vl);
+    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
+    va_end(vl2);
+    if (report_file_level >= level) {
+        fputs(line, report_file);
+        fflush(report_file);
     }
+}
+
+int init_report(const char *env, FILE **file)
+{
+    char *filename_template = NULL;
+    char *key, *val;
+    int ret, count = 0;
+    int prog_loglevel, envlevel = 0;
+    time_t now;
+    struct tm *tm;
+    AVBPrint filename;
 
-    while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
-        const AVClass *priv_class;
-        char *p = strchr(t->key, ':');
+    if (report_file) /* already opened */
+        return 0;
+    time(&now);
+    tm = localtime(&now);
 
-        /* check stream specification in opt name */
-        if (p)
-            switch (check_stream_specifier(s, st, p + 1)) {
-            case  1: *p = 0; break;
-            case  0:         continue;
-            default:         exit_program(1);
+    while (env && *env) {
+        if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
+            if (count)
+                av_log(NULL, AV_LOG_ERROR,
+                       "Failed to parse FFREPORT environment variable: %s\n",
+                       av_err2str(ret));
+            break;
+        }
+        if (*env)
+            env++;
+        count++;
+        if (!strcmp(key, "file")) {
+            av_free(filename_template);
+            filename_template = val;
+            val = NULL;
+        } else if (!strcmp(key, "level")) {
+            char *tail;
+            report_file_level = strtol(val, &tail, 10);
+            if (*tail) {
+                av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
+                exit_program(1);
             }
+            envlevel = 1;
+        } else {
+            av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
+        }
+        av_free(val);
+        av_free(key);
+    }
 
-        if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
-            !codec ||
-            ((priv_class = codec->priv_class) &&
-             av_opt_find(&priv_class, t->key, NULL, flags,
-                         AV_OPT_SEARCH_FAKE_OBJ)))
-            av_dict_set(&ret, t->key, t->value, 0);
-        else if (t->key[0] == prefix &&
-                 av_opt_find(&cc, t->key + 1, NULL, flags,
-                             AV_OPT_SEARCH_FAKE_OBJ))
-            av_dict_set(&ret, t->key + 1, t->value, 0);
-
-        if (p)
-            *p = ':';
+    av_bprint_init(&filename, 0, AV_BPRINT_SIZE_AUTOMATIC);
+    expand_filename_template(&filename,
+                             av_x_if_null(filename_template, "%p-%t.log"), tm);
+    av_free(filename_template);
+    if (!av_bprint_is_complete(&filename)) {
+        av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
+        return AVERROR(ENOMEM);
     }
-    return ret;
-}
 
-AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
-                                           AVDictionary *codec_opts)
-{
-    int i;
-    AVDictionary **opts;
-
-    if (!s->nb_streams)
-        return NULL;
-    opts = av_calloc(s->nb_streams, sizeof(*opts));
-    if (!opts) {
-        av_log(NULL, AV_LOG_ERROR,
-               "Could not alloc memory for stream options.\n");
-        exit_program(1);
+    prog_loglevel = av_log_get_level();
+    if (!envlevel)
+        report_file_level = FFMAX(report_file_level, prog_loglevel);
+
+    report_file = fopen(filename.str, "w");
+    if (!report_file) {
+        int ret = AVERROR(errno);
+        av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
+               filename.str, strerror(errno));
+        return ret;
     }
-    for (i = 0; i < s->nb_streams; i++)
-        opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
-                                    s, s->streams[i], NULL);
-    return opts;
+    av_log_set_callback(log_callback_report);
+    av_log(NULL, AV_LOG_INFO,
+           "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
+           "Report written to \"%s\"\n"
+           "Log level: %d\n",
+           program_name,
+           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+           tm->tm_hour, tm->tm_min, tm->tm_sec,
+           filename.str, report_file_level);
+    av_bprint_finalize(&filename, NULL);
+
+    if (file)
+        *file = report_file;
+
+    return 0;
 }
 
-void *grow_array(void *array, int elem_size, int *size, int new_size)
+int opt_report(void *optctx, const char *opt, const char *arg)
 {
-    if (new_size >= INT_MAX / elem_size) {
-        av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
-        exit_program(1);
-    }
-    if (*size < new_size) {
-        uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
-        if (!tmp) {
-            av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
-            exit_program(1);
-        }
-        memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
-        *size = new_size;
-        return tmp;
-    }
-    return array;
+    return init_report(NULL, NULL);
 }
 
-void *allocate_array_elem(void *ptr, size_t elem_size, int *nb_elems)
+int opt_max_alloc(void *optctx, const char *opt, const char *arg)
 {
-    void *new_elem;
+    char *tail;
+    size_t max;
 
-    if (!(new_elem = av_mallocz(elem_size)) ||
-        av_dynarray_add_nofree(ptr, nb_elems, new_elem) < 0) {
-        av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
+    max = strtol(arg, &tail, 10);
+    if (*tail) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
         exit_program(1);
     }
-    return new_elem;
+    av_max_alloc(max);
+    return 0;
 }
 
-double get_rotation(int32_t *displaymatrix)
+int opt_loglevel(void *optctx, const char *opt, const char *arg)
 {
-    double theta = 0;
-    if (displaymatrix)
-        theta = -round(av_display_rotation_get((int32_t*) displaymatrix));
+    const struct { const char *name; int level; } log_levels[] = {
+        { "quiet"  , AV_LOG_QUIET   },
+        { "panic"  , AV_LOG_PANIC   },
+        { "fatal"  , AV_LOG_FATAL   },
+        { "error"  , AV_LOG_ERROR   },
+        { "warning", AV_LOG_WARNING },
+        { "info"   , AV_LOG_INFO    },
+        { "verbose", AV_LOG_VERBOSE },
+        { "debug"  , AV_LOG_DEBUG   },
+        { "trace"  , AV_LOG_TRACE   },
+    };
+    const char *token;
+    char *tail;
+    int flags = av_log_get_flags();
+    int level = av_log_get_level();
+    int cmd, i = 0;
+
+    av_assert0(arg);
+    while (*arg) {
+        token = arg;
+        if (*token == '+' || *token == '-') {
+            cmd = *token++;
+        } else {
+            cmd = 0;
+        }
+        if (!i && !cmd) {
+            flags = 0;  /* missing relative prefix, build absolute value */
+        }
+        if (av_strstart(token, "repeat", &arg)) {
+            if (cmd == '-') {
+                flags |= AV_LOG_SKIP_REPEATED;
+            } else {
+                flags &= ~AV_LOG_SKIP_REPEATED;
+            }
+        } else if (av_strstart(token, "level", &arg)) {
+            if (cmd == '-') {
+                flags &= ~AV_LOG_PRINT_LEVEL;
+            } else {
+                flags |= AV_LOG_PRINT_LEVEL;
+            }
+        } else {
+            break;
+        }
+        i++;
+    }
+    if (!*arg) {
+        goto end;
+    } else if (*arg == '+') {
+        arg++;
+    } else if (!i) {
+        flags = av_log_get_flags();  /* level value without prefix, reset flags */
+    }
 
-    theta -= 360*floor(theta/360 + 0.9/360);
+    for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
+        if (!strcmp(log_levels[i].name, arg)) {
+            level = log_levels[i].level;
+            goto end;
+        }
+    }
 
-    if (fabs(theta - 90*round(theta/90)) > 2)
-        av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
-               "If you want to help, upload a sample "
-               "of this file to https://streams.videolan.org/upload/ "
-               "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
+    level = strtol(arg, &tail, 10);
+    if (*tail) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
+               "Possible levels are numbers or:\n", arg);
+        for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
+            av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
+        exit_program(1);
+    }
 
-    return theta;
+end:
+    av_log_set_flags(flags);
+    av_log_set_level(level);
+    return 0;
 }
 
 #if CONFIG_AVDEVICE
@@ -2264,6 +1304,7 @@ static void print_device_list(const AVDeviceInfoList *device_list)
         printf(")\n");
     }
 }
+
 static int print_device_sources(const AVInputFormat *fmt, AVDictionary *opts)
 {
     int ret;
@@ -2401,5 +1442,4 @@ int show_sinks(void *optctx, const char *opt, const char *arg)
     av_log_set_level(error_level);
     return ret;
 }
-
-#endif
+#endif /* CONFIG_AVDEVICE */
diff --git a/fftools/opt_common.h b/fftools/opt_common.h
new file mode 100644
index 0000000000..ea1d16e769
--- /dev/null
+++ b/fftools/opt_common.h
@@ -0,0 +1,231 @@
+/*
+ * Option handlers shared between the tools.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFTOOLS_OPT_COMMON_H
+#define FFTOOLS_OPT_COMMON_H
+
+#include "config.h"
+
+#include "cmdutils.h"
+
+#if CONFIG_AVDEVICE
+/**
+ * Print a listing containing autodetected sinks of the output device.
+ * Device name with options may be passed as an argument to limit results.
+ */
+int show_sinks(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing autodetected sources of the input device.
+ * Device name with options may be passed as an argument to limit results.
+ */
+int show_sources(void *optctx, const char *opt, const char *arg);
+#endif
+
+#if CONFIG_AVDEVICE
+#define CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                \
+    { "sources"    , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },                                                  \
+      "list sources of the input device", "device" },                                                                   \
+    { "sinks"      , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },                                                    \
+      "list sinks of the output device", "device" },                                                                    \
+
+#else
+#define CMDUTILS_COMMON_OPTIONS_AVDEVICE
+#endif
+
+/**
+ * Print the license of the program to stdout. The license depends on
+ * the license of the libraries compiled into the program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_license(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Generic -h handler common to all fftools.
+ */
+int show_help(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print the version of the program to stdout. The version message
+ * depends on the current versions of the repository and of the libav*
+ * libraries.
+ * This option processing function does not utilize the arguments.
+ */
+int show_version(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print the build configuration of the program to stdout. The contents
+ * depend on the definition of FFMPEG_CONFIGURATION.
+ * This option processing function does not utilize the arguments.
+ */
+int show_buildconf(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the formats supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_formats(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the muxers supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_muxers(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the demuxer supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_demuxers(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the devices supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_devices(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the codecs supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_codecs(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the decoders supported by the
+ * program.
+ */
+int show_decoders(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the encoders supported by the
+ * program.
+ */
+int show_encoders(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the bit stream filters supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_bsfs(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the protocols supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_protocols(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the filters supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_filters(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the pixel formats supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_pix_fmts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the standard channel layouts supported by
+ * the program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_layouts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the sample formats supported by the
+ * program.
+ */
+int show_sample_fmts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all supported stream dispositions.
+ */
+int show_dispositions(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the color names and values recognized
+ * by the program.
+ */
+int show_colors(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Set the libav* libraries log level.
+ */
+int opt_loglevel(void *optctx, const char *opt, const char *arg);
+
+int opt_report(void *optctx, const char *opt, const char *arg);
+int init_report(const char *env, FILE **file);
+
+int opt_max_alloc(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Override the cpuflags.
+ */
+int opt_cpuflags(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Override the cpucount.
+ */
+int opt_cpucount(void *optctx, const char *opt, const char *arg);
+
+#define CMDUTILS_COMMON_OPTIONS                                                                                         \
+    { "L",           OPT_EXIT,             { .func_arg = show_license },     "show license" },                          \
+    { "h",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "?",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "help",        OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "-help",       OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "version",     OPT_EXIT,             { .func_arg = show_version },     "show version" },                          \
+    { "buildconf",   OPT_EXIT,             { .func_arg = show_buildconf },   "show build configuration" },              \
+    { "formats",     OPT_EXIT,             { .func_arg = show_formats },     "show available formats" },                \
+    { "muxers",      OPT_EXIT,             { .func_arg = show_muxers },      "show available muxers" },                 \
+    { "demuxers",    OPT_EXIT,             { .func_arg = show_demuxers },    "show available demuxers" },               \
+    { "devices",     OPT_EXIT,             { .func_arg = show_devices },     "show available devices" },                \
+    { "codecs",      OPT_EXIT,             { .func_arg = show_codecs },      "show available codecs" },                 \
+    { "decoders",    OPT_EXIT,             { .func_arg = show_decoders },    "show available decoders" },               \
+    { "encoders",    OPT_EXIT,             { .func_arg = show_encoders },    "show available encoders" },               \
+    { "bsfs",        OPT_EXIT,             { .func_arg = show_bsfs },        "show available bit stream filters" },     \
+    { "protocols",   OPT_EXIT,             { .func_arg = show_protocols },   "show available protocols" },              \
+    { "filters",     OPT_EXIT,             { .func_arg = show_filters },     "show available filters" },                \
+    { "pix_fmts",    OPT_EXIT,             { .func_arg = show_pix_fmts },    "show available pixel formats" },          \
+    { "layouts",     OPT_EXIT,             { .func_arg = show_layouts },     "show standard channel layouts" },         \
+    { "sample_fmts", OPT_EXIT,             { .func_arg = show_sample_fmts }, "show available audio sample formats" },   \
+    { "dispositions", OPT_EXIT,            { .func_arg = show_dispositions}, "show available stream dispositions" },    \
+    { "colors",      OPT_EXIT,             { .func_arg = show_colors },      "show available color names" },            \
+    { "loglevel",    HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
+    { "v",           HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
+    { "report",      0,                    { .func_arg = opt_report },       "generate a report" },                     \
+    { "max_alloc",   HAS_ARG,              { .func_arg = opt_max_alloc },    "set maximum size of a single allocated block", "bytes" }, \
+    { "cpuflags",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags },     "force specific cpu flags", "flags" },     \
+    { "cpucount",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpucount },     "force specific cpu count", "count" },     \
+    { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner},     "do not show program banner", "hide_banner" },          \
+    CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                    \
+
+#endif /* FFTOOLS_OPT_COMMON_H */
