id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
2048,reproducible crash on some subtitles in ff_ass_split_override_codes(),julian,ubitux,"ffmpeg crashes reproducibly when converting files with some subtitles. 
i've seen the crash with self-compiled ffmpeg 1.0 as well as the Mac OS X binary (linked to from the hompage) for 1.0.1.

download the sample file:
https://dl.dropbox.com/u/7221986/ffmpeg-bug.mkv
{{{
% ffmpeg -i ffmpeg-bug.mkv -map 0:2 -map 0:0 -map 0:1 -scodec mov_text -vcodec copy out.mp4

ffmpeg version 1.0.1-tessus Copyright (c) 2000-2012 the FFmpeg developers
  built on Dec  3 2012 23:31:08 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
  configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --disable-ffserver --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-fontconfig --enable-libfreetype --enable-libass --enable-filters --enable-runtime-cpudetect
  libavutil      51. 73.101 / 51. 73.101
  libavcodec     54. 59.100 / 54. 59.100
  libavformat    54. 29.104 / 54. 29.104
  libavdevice    54.  2.101 / 54.  2.101
  libavfilter     3. 17.100 /  3. 17.100
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, matroska,webm, from 'ffmpeg-bug.mkv':
  Metadata:
    ENCODER         : Lavf54.29.104
  Duration: 00:24:27.06, start: 0.000000, bitrate: 8 kb/s
    Stream #0:0: Subtitle: ssa (default)
    Metadata:
      title           : 简体中文
    Stream #0:1: Video: h264 (High), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 23.81 fps, 23.81 tbr, 1k tbn, 47.62 tbc (default)
    Stream #0:2: Subtitle: ssa (default)
    Metadata:
      title           : 繁体中文
File 'out.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'out.mp4':
  Metadata:
    encoder         : Lavf54.29.104
    Stream #0:0: Subtitle: mov_text ([8][0][0][0] / 0x0008) (default)
    Metadata:
      title           : 繁体中文
    Stream #0:1: Subtitle: mov_text ([8][0][0][0] / 0x0008) (default)
    Metadata:
      title           : 简体中文
    Stream #0:2: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=2-31, 23.81 fps, 1k tbn, 1k tbc (default)
Stream mapping:
  Stream #0:2 -> #0:0 (ass -> mov_text)
  Stream #0:0 -> #0:1 (ass -> mov_text)
  Stream #0:1 -> #0:2 (copy)
Press [q] to stop, [?] for help

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
0x00000001002b1d06 in ff_ass_split_override_codes ()
}}}",defect,closed,important,avcodec,git-master,fixed,ass crash SIGSEGV,,,,1,0