[FFmpeg-trac] #2313(avformat:new): -metadata option puts null characters in, confusing iTunes.

[FFmpeg]

#2313: -metadata option puts null characters in, confusing iTunes.
--------------------------------------+------------------------------------
             Reporter:  STrRedWolf    |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avformat
              Version:  unspecified   |               Resolution:
             Keywords:  mov metadata  |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
--------------------------------------+------------------------------------

Comment (by STrRedWolf):

 Let me see if I can reduce it down.  I doubt I need to transcode it to
 show the bug.  I'm now transcoding a clean file that I can test with...

 {{{
 tygris at sandra ~/video/tmp $ ffmpeg -i test-clean.m4v -c:v copy -c:a copy
 -metadata "title=AC2004 clip" -metadata media_type=10 -metadata
 network=BBFTV -metadata "show=BBFTV Test clip" -metadata season_number=1
 -metadata episode_sort=1 -metadata "track=1/1" -metadata "episode_id=test-
 dirty.m4v" test-dirty.m4v
 ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
   built on Feb 17 2013 18:35:29 with gcc 4.6.3 (Gentoo 4.6.3 p1.11,
 pie-0.5.2)
   configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc
 --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-O2
 -pipe -march=native' --extra-cflags='-O2 -pipe -march=native' --extra-
 cxxflags='-O2 -pipe -march=native' --disable-static --enable-gpl --enable-
 version3 --enable-postproc --enable-avfilter --disable-stripping
 --disable-debug --disable-doc --disable-network --disable-vaapi --disable-
 runtime-cpudetect --enable-libmp3lame --enable-libvo-aacenc --enable-
 libtheora --enable-libx264 --enable-libxvid --enable-libfaac --enable-
 nonfree --enable-libdc1394 --disable-indev=oss --enable-x11grab --enable-
 libpulse --disable-outdev=oss --enable-libfreetype --enable-pthreads
 --enable-libvorbis --enable-libopenjpeg --disable-altivec --disable-avx
 --disable-vis --disable-neon --cpu=host --enable-hardcoded-tables
   libavutil      52. 13.100 / 52. 13.100
   libavcodec     54. 86.100 / 54. 86.100
   libavformat    54. 59.106 / 54. 59.106
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 32.100 /  3. 32.100
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test-clean.m4v':
   Metadata:
     major_brand     : M4V
     minor_version   : 512
     compatible_brands: isomiso2avc1
     encoder         : Lavf54.59.106
   Duration: 00:00:30.04, start: 0.021333, bitrate: 641 kb/s
     Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
 720x576 [SAR 1:1 DAR 5:4], 475 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
 fltp, 160 kb/s
     Metadata:
       handler_name    : SoundHandler
 File 'test-dirty.m4v' already exists. Overwrite ? [y/N] y
 Output #0, ipod, to 'test-dirty.m4v':
   Metadata:
     major_brand     : M4V
     minor_version   : 512
     compatible_brands: isomiso2avc1
     episode_id      : test-dirty.m4v
     title           : AC2004 clip
     media_type      : 10
     network         : BBFTV
     show            : BBFTV Test clip
     season_number   : 1
     episode_sort    : 1
     track           : 1/1
     encoder         : Lavf54.59.106
     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 720x576
 [SAR 1:1 DAR 5:4], q=2-31, 475 kb/s, 25 fps, 12800 tbn, 12800 tbc
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
 160 kb/s
     Metadata:
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #0:1 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 frame=  750 fps=0.0 q=-1.0 Lsize=    2351kB time=00:00:30.03 bitrate=
 641.3kbits/s
 video:1740kB audio:587kB subtitle:0 global headers:0kB muxing overhead
 1.020305%

 }}}

 Just one -metadata will not do the trick. No need to transcode.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2313#comment:2>
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