libavformat/dashenc.c: In function 'dash_init':
libavformat/dashenc.c:1581:65: warning: '-stream' directive output may be truncated writing 7 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
                 snprintf(os->initfile, sizeof(os->initfile), '%s-stream%d.%s', basename, i, os->format_name);
                                                                 ^~~~~~~
libavformat/dashenc.c:1581:62: note: directive argument in the range [0, 2147483647]
                 snprintf(os->initfile, sizeof(os->initfile), '%s-stream%d.%s', basename, i, os->format_name);
                                                              ^~~~~~~~~~~~~~~~
libavformat/dashenc.c:1581:17: note: 'snprintf' output 10 or more bytes (assuming 1042) into a destination of size 1024
                 snprintf(os->initfile, sizeof(os->initfile), '%s-stream%d.%s', basename, i, os->format_name);
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c:1585:49: 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:1585:9: 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 'flush_init_segment':
libavformat/dashenc.c:593:49: 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:593:9: 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:487:49: 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:487:9: 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:1961:63: 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:1961:13: 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:487:49: 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:487:46: note: directive argument in the range [0, 2147483647]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                              ^~~~~~~~~~~~~~~~~
libavformat/dashenc.c:487:9: 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:2258:59: 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:2258:9: 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);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'new_rendition',
    inlined from 'parse_playlist' at libavformat/hls.c:828:13:
libavformat/hls.c:546:13: warning: 'strncpy' output may be truncated copying between 2 and 62 bytes from a string of length 63 [-Wstringop-truncation]
             strncpy(rend->language + langlen + 1, info->assoc_language,
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                     sizeof(rend->language) - langlen - 2);
                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/mlvdec.c: In function 'read_header':
libavformat/mlvdec.c:363:63: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
             snprintf(filename + strlen(filename) - 2, 3, '%02d', i);
                                                               ^
libavformat/mlvdec.c:363:13: 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:3302:79: 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:3302:17: 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:2000:51: 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:2000:9: 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:513:49: 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:513:9: 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:541:53: 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:541:13: 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:548:63: 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:548:9: 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:549:63: 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:549:9: 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:1584:30: warning: '%s' directive output may be truncated writing up to 4095 bytes into a region of size 4085 [-Wformat-truncation=]
                  'Transport: %s
',
                              ^~
                  transport);
                  ~~~~~~~~~    
libavformat/rtsp.c:1583:9: note: 'snprintf' output between 14 and 4109 bytes into a destination of size 4096
         snprintf(cmd, sizeof(cmd),
         ^~~~~~~~~~~~~~~~~~~~~~~~~~
                  'Transport: %s
',
                  ~~~~~~~~~~~~~~~~~~~~
                  transport);
                  ~~~~~~~~~~
libavformat/rtsp.c: In function 'ff_rtsp_connect':
libavformat/rtsp.c:1584:30: warning: '%s' directive output may be truncated writing up to 4095 bytes into a region of size 4085 [-Wformat-truncation=]
                  'Transport: %s
',
                              ^~
                  transport);
                  ~~~~~~~~~    
libavformat/rtsp.c:1583:9: note: 'snprintf' output between 14 and 4109 bytes into a destination of size 4096
         snprintf(cmd, sizeof(cmd),
         ^~~~~~~~~~~~~~~~~~~~~~~~~~
                  'Transport: %s
',
                  ~~~~~~~~~~~~~~~~~~~~
                  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/webp.c: In function 'init_canvas_frame':
libavcodec/webp.c:1647:35: warning: passing argument 1 of 'ff_thread_release_ext_buffer' from incompatible pointer type [-Wincompatible-pointer-types]
     ff_thread_release_ext_buffer(s->avctx, &s->canvas_frame);
                                  ~^~~~~~~
In file included from libavcodec/vp8.h:35,
                 from libavcodec/webp.c:58:
libavcodec/threadframe.h:81:48: note: expected 'ThreadFrame *' {aka 'struct ThreadFrame *'} but argument is of type 'AVCodecContext *' {aka 'struct AVCodecContext *'}
 void ff_thread_release_ext_buffer(ThreadFrame *f);
                                   ~~~~~~~~~~~~~^
libavcodec/webp.c:1647:5: error: too many arguments to function 'ff_thread_release_ext_buffer'
     ff_thread_release_ext_buffer(s->avctx, &s->canvas_frame);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from libavcodec/vp8.h:35,
                 from libavcodec/webp.c:58:
libavcodec/threadframe.h:81:6: note: declared here
 void ff_thread_release_ext_buffer(ThreadFrame *f);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
make: *** [ffbuild/common.mak:81: libavcodec/webp.o] Error 1
make: *** Waiting for unfinished jobs....