[FFmpeg-trac] #722(avformat:new): ffmpeg parses bext umid incorrectly when umid is 64 bytes

[FFmpeg]

#722: ffmpeg parses bext umid incorrectly when umid is 64 bytes
------------------------------------+------------------------------------
             Reporter:  dericed     |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  bext        |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by dericed):

 How do I enable bext writing? The command I tried below does not produce a
 bext chunk (input file has no bext).


 {{{
 ffmpeg -y -i dave.wav -metadata
 umid="060A2B34010101010101021033000000FF7FCBA40000008000000000000000FF000000000000008000000000000000000000000055534120574E594344415645"
 -c:a copy umid.wav
 ffmpeg version N-31814-g7076967, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Nov 29 2011 16:34:05 with gcc 4.2.1 (Apple Inc. build 5666)
 (dot 3)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
 --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables
 --cc=/usr/bin/gcc-4.2 --enable-libx264 --enable-libfaac --enable-
 libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-
 libxvid --disable-ffplay
   libavutil    51. 29. 1 / 51. 29. 1
   libavcodec   53. 39. 1 / 53. 39. 1
   libavformat  53. 22. 0 / 53. 22. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 50. 0 /  2. 50. 0
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [wav @ 0x7fb90a03d800] parser not found for codec pcm_s16le, packets or
 times may be invalid.
 Input #0, wav, from 'dave.wav':
   Duration: 00:00:01.00, bitrate: 1536 kb/s
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2
 channels, s16, 1536 kb/s
 Output #0, wav, to 'umid.wav':
   Metadata:
     umid            :
 060A2B34010101010101021033000000FF7FCBA40000008000000000000000FF000000000000008000000000000000000000000055534120574E594344415645
     encoder         : Lavf53.22.0
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2
 channels, 1536 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 size=     188kB time=00:00:01.00 bitrate=1536.4kbits/s
 video:0kB audio:188kB global headers:0kB muxing overhead 0.023958%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/722#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker