snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'flush_init_segment':
libavformat/dashenc.c:594:49: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile);
                                                 ^~
libavformat/dashenc.c:594:9: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024
         snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'write_hls_media_playlist':
libavformat/dashenc.c:488:49: warning: 'media_' directive output may be truncated writing 6 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                                 ^~~~~~
libavformat/dashenc.c:488:9: note: 'snprintf' output between 13 and 1046 bytes into a destination of size 1024
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_flush':
libavformat/dashenc.c:1957:63: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
             snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, os->initfile);
                                                               ^~
libavformat/dashenc.c:1957:13: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024
             snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, os->initfile);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_write_trailer':
libavformat/dashenc.c:488:49: warning: 'media_' directive output may be truncated writing 6 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                                 ^~~~~~
libavformat/dashenc.c:488:46: note: directive argument in the range [0, 2147483647]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                              ^~~~~~~~~~~~~~~~~
libavformat/dashenc.c:488:9: note: 'snprintf' output between 13 and 1045 bytes into a destination of size 1024
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_write_packet':
libavformat/dashenc.c:2254:59: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname,
                                                           ^~
libavformat/dashenc.c:2254:9: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024
         snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname,
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  os->filename);
                  ~~~~~~~~~~~~~
libavformat/img2enc.c: In function 'write_packet':
libavformat/img2enc.c:183:55: warning: '.tmp' directive output may be truncated writing 4 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(img->tmp[i], sizeof(img->tmp[i]), '%s.tmp', filename);
                                                       ^~~~
libavformat/img2enc.c:183:9: note: 'snprintf' output between 5 and 1028 bytes into a destination of size 1024
         snprintf(img->tmp[i], sizeof(img->tmp[i]), '%s.tmp', filename);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/mlvdec.c: In function 'read_header':
libavformat/mlvdec.c:364:63: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
             snprintf(filename + strlen(filename) - 2, 3, '%02d', i);
                                                               ^
libavformat/mlvdec.c:364:13: note: 'snprintf' output between 3 and 4 bytes into a destination of size 3
             snprintf(filename + strlen(filename) - 2, 3, '%02d', i);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/matroskaenc.c: In function 'mkv_write_trailer':
libavformat/matroskaenc.c:3341:79: warning: '%012.9f' directive output may be truncated writing between 12 and 320 bytes into a region of size between 8 and 14 [-Wformat-truncation=]
                 snprintf(duration_string, sizeof(duration_string), '%02d:%02d:%012.9f',
                                                                               ^~~~~~~
libavformat/matroskaenc.c:3341:17: note: 'snprintf' output between 19 and 333 bytes into a destination of size 20
                 snprintf(duration_string, sizeof(duration_string), '%02d:%02d:%012.9f',
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                          (int) duration_sec / 3600, ((int) duration_sec / 60) % 60,
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                          fmod(duration_sec, 60));
                          ~~~~~~~~~~~~~~~~~~~~~~~
libavformat/rtmpproto.c: In function 'send_invoke_response':
libavformat/rtmpproto.c:2001:51: warning: ' is now published' directive output may be truncated writing 17 bytes into a region of size between 1 and 128 [-Wformat-truncation=]
         snprintf(statusmsg, sizeof(statusmsg), '%s is now published', filename);
                                                   ^~~~~~~~~~~~~~~~~
libavformat/rtmpproto.c:2001:9: note: 'snprintf' output between 18 and 145 bytes into a destination of size 128
         snprintf(statusmsg, sizeof(statusmsg), '%s is now published', filename);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c: In function 'ism_flush':
libavformat/smoothstreamingenc.c:510:49: warning: '/temp' directive output may be truncated writing 5 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(filename, sizeof(filename), '%s/temp', os->dirname);
                                                 ^~~~~
libavformat/smoothstreamingenc.c:510:9: note: 'snprintf' output between 6 and 1029 bytes into a destination of size 1024
         snprintf(filename, sizeof(filename), '%s/temp', os->dirname);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:538:53: warning: '/temp' directive output may be truncated writing 5 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
             snprintf(filename, sizeof(filename), '%s/temp', os->dirname);
                                                     ^~~~~
libavformat/smoothstreamingenc.c:538:13: note: 'snprintf' output between 6 and 1029 bytes into a destination of size 1024
             snprintf(filename, sizeof(filename), '%s/temp', os->dirname);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:545:63: warning: '/FragmentInfo(' directive output may be truncated writing 14 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(header_filename, sizeof(header_filename), '%s/FragmentInfo(%s=%'PRIu64')', os->dirname, os->stream_type_tag, start_ts);
                                                               ^~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:545:9: note: 'snprintf' output 18 or more bytes (assuming 1041) into a destination of size 1024
         snprintf(header_filename, sizeof(header_filename), '%s/FragmentInfo(%s=%'PRIu64')', os->dirname, os->stream_type_tag, start_ts);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:546:63: warning: '/Fragments(' directive output may be truncated writing 11 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(target_filename, sizeof(target_filename), '%s/Fragments(%s=%'PRIu64')', os->dirname, os->stream_type_tag, start_ts);
                                                               ^~~~~~~~~~~
libavformat/smoothstreamingenc.c:546:9: note: 'snprintf' output 15 or more bytes (assuming 1038) into a destination of size 1024
         snprintf(target_filename, sizeof(target_filename), '%s/Fragments(%s=%'PRIu64')', os->dirname, os->stream_type_tag, start_ts);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/rtsp.c: In function 'ff_rtsp_make_setup_request':
libavformat/rtsp.c:1592:30: warning: '%s' directive output may be truncated writing up to 4095 bytes into a region of size 4085 [-Wformat-truncation=]
                  'Transport: %s\r\n',
                              ^~
                  transport);
                  ~~~~~~~~~    
libavformat/rtsp.c:1591:9: note: 'snprintf' output between 14 and 4109 bytes into a destination of size 4096
         snprintf(cmd, sizeof(cmd),
         ^~~~~~~~~~~~~~~~~~~~~~~~~~
                  'Transport: %s\r\n',
                  ~~~~~~~~~~~~~~~~~~~~
                  transport);
                  ~~~~~~~~~~
libavformat/rtsp.c: In function 'ff_rtsp_connect':
libavformat/rtsp.c:1592:30: warning: '%s' directive output may be truncated writing up to 4095 bytes into a region of size 4085 [-Wformat-truncation=]
                  'Transport: %s\r\n',
                              ^~
                  transport);
                  ~~~~~~~~~    
libavformat/rtsp.c:1591:9: note: 'snprintf' output between 14 and 4109 bytes into a destination of size 4096
         snprintf(cmd, sizeof(cmd),
         ^~~~~~~~~~~~~~~~~~~~~~~~~~
                  'Transport: %s\r\n',
                  ~~~~~~~~~~~~~~~~~~~~
                  transport);
                  ~~~~~~~~~~
libavformat/vorbiscomment.c: In function 'ff_vorbiscomment_write':
libavformat/vorbiscomment.c:103:63: warning: '%03d' directive output may be truncated writing between 3 and 10 bytes into a region of size 4 [-Wformat-truncation=]
             snprintf(chapter_number, sizeof(chapter_number), '%03d', i);
                                                               ^~~~
libavformat/vorbiscomment.c:103:62: note: directive argument in the range [0, 2147483647]
             snprintf(chapter_number, sizeof(chapter_number), '%03d', i);
                                                              ^~~~~~
libavformat/vorbiscomment.c:103:13: note: 'snprintf' output between 4 and 11 bytes into a destination of size 4
             snprintf(chapter_number, sizeof(chapter_number), '%03d', i);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/vorbiscomment.c:104:69: warning: '%02d' directive output may be truncated writing between 2 and 3 bytes into a region of size between 1 and 7 [-Wformat-truncation=]
             snprintf(chapter_time, sizeof(chapter_time), '%02d:%02d:%02d.%03d', h, m, s, ms);
                                                                     ^~~~
libavformat/vorbiscomment.c:104:58: note: directive argument in the range [-59, 59]
             snprintf(chapter_time, sizeof(chapter_time), '%02d:%02d:%02d.%03d', h, m, s, ms);
                                                          ^~~~~~~~~~~~~~~~~~~~~
libavformat/vorbiscomment.c:104:58: note: directive argument in the range [-999, 999]
libavformat/vorbiscomment.c:104:13: note: 'snprintf' output between 13 and 21 bytes into a destination of size 13
             snprintf(chapter_time, sizeof(chapter_time), '%02d:%02d:%02d.%03d', h, m, s, ms);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavcodec/exif.c: In function 'ff_exif_decode_ifd':
libavcodec/exif.c:230:43: warning: '%04X' directive output may be truncated writing between 4 and 8 bytes into a region of size 5 [-Wformat-truncation=]
             snprintf(buf, sizeof(buf), '0x%04X', id);
                                           ^~~~
libavcodec/exif.c:230:40: note: directive argument in the range [1, 4294967295]
             snprintf(buf, sizeof(buf), '0x%04X', id);
                                        ^~~~~~~~
libavcodec/exif.c:230:13: note: 'snprintf' output between 7 and 11 bytes into a destination of size 7
             snprintf(buf, sizeof(buf), '0x%04X', id);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavcodec/pcm.c: In function 'pcm_decode_init':
libavcodec/pcm.c:287:5: warning: 'sample_fmts' is deprecated [-Wdeprecated-declarations]
     avctx->sample_fmt = avctx->codec->sample_fmts[0];
     ^~~~~
In file included from libavcodec/avcodec.h:41,
                 from libavcodec/pcm.c:34:
libavcodec/codec.h:219:32: note: declared here
     const enum AVSampleFormat *sample_fmts; ///< @deprecated use avcodec_get_supported_config()
                                ^~~~~~~~~~~
libavcodec/sbcenc.c: In function 'sbc_encode_init':
libavcodec/sbcenc.c:263:5: warning: 'supported_samplerates' is deprecated [-Wdeprecated-declarations]
     for (int i = 0; avctx->codec->supported_samplerates[i]; i++)
     ^~~
In file included from libavcodec/avcodec.h:41,
                 from libavcodec/sbcenc.c:36:
libavcodec/codec.h:217:16: note: declared here
     const int *supported_samplerates;       ///< @deprecated use avcodec_get_supported_config()
                ^~~~~~~~~~~~~~~~~~~~~
libavcodec/sbcenc.c:264:9: warning: 'supported_samplerates' is deprecated [-Wdeprecated-declarations]
         if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
         ^~
In file included from libavcodec/avcodec.h:41,
                 from libavcodec/sbcenc.c:36:
libavcodec/codec.h:217:16: note: declared here
     const int *supported_samplerates;       ///< @deprecated use avcodec_get_supported_config()
                ^~~~~~~~~~~~~~~~~~~~~
libavcodec/sga.c: In function 'decode_palmapdata':
libavcodec/sga.c:257:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
     int ret;
         ^~~
libavcodec/sga.c: In function 'decode_tiledata':
libavcodec/sga.c:282:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
     int ret;
         ^~~
fftools/ffmpeg_filter.c: In function 'insert_filter':
fftools/ffmpeg_filter.c:1450:5: error: expected ',' or ';' before 'AVFilterContext'
     AVFilterContext *ctx;
     ^~~~~~~~~~~~~~~
fftools/ffmpeg_filter.c:1456:41: error: 'ctx' undeclared (first use in this function)
     ret = avfilter_graph_create_filter(&ctx,
                                         ^~~
fftools/ffmpeg_filter.c:1456:41: note: each undeclared identifier is reported only once for each function it appears in
make: *** [ffbuild/common.mak:81: fftools/ffmpeg_filter.o] Error 1
make: *** Waiting for unfinished jobs....