id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
2313,"-metadata option puts null characters in, confusing iTunes.",STrRedWolf,,"Summary of the bug:  If you use the -metadata option while converting video to an iTunes playable M4V, iTunes will refuse to recognize the file; it'll just ignore it.  It will do a bit of analysis if you load a bulk of them up, but then ignore the whole batch if they all use the -metadata option.

A check with AtomicParsley says that many of the atoms in the M4V have null-terminated values... which is not allowed and causes iTunes to think the file is bad.

How to reproduce:
{{{
% ffmpeg -i input -acodec libfaac -ac 2 -ab 160k -c:v libx264 -vprofile main -preset slow -tune film -level 3.1 -crf 28 -threads 0 -metadata media_type=10 -metadata network=FakeNetwork -metadata ""show=Convention Archive"" -metadata ""title=ComicCon Cotham City"" -metadata season_number=1 -metadata episode_sort=1 -metadata ""track=1/1"" -metadata episode_id=output output

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

}}}

",defect,new,normal,avformat,unspecified,,mov metadata,,,,0,0