copy closed caption gets encoded to dvb_subtitle

/tmp ❯ ffmpeg -i Test\ for\ Quicktime\ 608\ CC\ file.mov -map 0 -c copy -y -bsf h264_mp4toannexb test.ts

ffmpeg version N-39672-g40b7a27 Copyright (c) 2000-2012 the FFmpeg developers
  built on Apr 10 2012 19:19:51 with clang 2.1 (tags/Apple/clang-163.7.1)
  configuration: --prefix=/Users/vivien/dev/work/panda/ffmpeg-head/runtime --enable-static --disable-shared --enable-postproc --enable-nonfree --enable-libx264 --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libxvid --enable-libvorbis --enable-libvpx --enable-avfilter --disable-ffserver --disable-network --disable-devices --disable-doc --cc=clang --extra-cflags=--static --extra-ldflags= --bindir=/Users/vivien/dev/work/panda/ffmpeg-head/dist/bin --incdir=/Users/vivien/dev/work/panda/ffmpeg-head/dist/include --libdir=/Users/vivien/dev/work/panda/ffmpeg-head/dist/lib --prefix=/usr/local
  libavutil      51. 46.100 / 51. 46.100
  libavcodec     54. 14.101 / 54. 14.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 67.101 /  2. 67.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 10.100 /  0. 10.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Test for Quicktime 608 CC file.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2010-11-04 17:28:46
  Duration: 00:00:28.39, start: 0.000000, bitrate: 1603 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 1485 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
    Metadata:
      creation_time   : 2010-11-04 17:28:46
      handler_name    : Apple Alias Data Handler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 109 kb/s
    Metadata:
      creation_time   : 2010-11-04 17:28:46
      handler_name    : Apple Alias Data Handler
    Stream #0:2(eng): Subtitle: eia_608 (c608 / 0x38303663)
    Metadata:
      creation_time   : 2010-11-04 17:28:46
      handler_name    : Apple Alias Data Handler
[mpegts @ 0x7f924b865000] muxrate VBR, pcr every 299 pkts, sdt every 200, pat/pmt every 40 pkts
Output #0, mpegts, to 'test.ts':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2010-11-04 17:28:46
    encoder         : Lavf54.3.100
    Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 640x360, q=2-31, 1485 kb/s, 29.97 fps, 90k tbn, 2997 tbc
    Metadata:
      creation_time   : 2010-11-04 17:28:46
      handler_name    : Apple Alias Data Handler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, 109 kb/s
    Metadata:
      creation_time   : 2010-11-04 17:28:46
      handler_name    : Apple Alias Data Handler
    Stream #0:2(eng): Subtitle: eia_608 (c608 / 0x38303663)
    Metadata:
      creation_time   : 2010-11-04 17:28:46
      handler_name    : Apple Alias Data Handler
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
Press [q] to stop, [?] for help
frame=  851 fps=0.0 q=-1.0 Lsize=    6244kB time=00:00:27.62 bitrate=1851.5kbits/s
video:5147kB audio:379kB global headers:0kB muxing overhead 12.996930%


/tmp ❯ ffmpeg -i test.ts

ffmpeg version N-39672-g40b7a27 Copyright (c) 2000-2012 the FFmpeg developers
  built on Apr 10 2012 19:19:51 with clang 2.1 (tags/Apple/clang-163.7.1)
  configuration: --prefix=/Users/vivien/dev/work/panda/ffmpeg-head/runtime --enable-static --disable-shared --enable-postproc --enable-nonfree --enable-libx264 --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libxvid --enable-libvorbis --enable-libvpx --enable-avfilter --disable-ffserver --disable-network --disable-devices --disable-doc --cc=clang --extra-cflags=--static --extra-ldflags= --bindir=/Users/vivien/dev/work/panda/ffmpeg-head/dist/bin --incdir=/Users/vivien/dev/work/panda/ffmpeg-head/dist/include --libdir=/Users/vivien/dev/work/panda/ffmpeg-head/dist/lib --prefix=/usr/local
  libavutil      51. 46.100 / 51. 46.100
  libavcodec     54. 14.101 / 54. 14.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 67.101 /  2. 67.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 10.100 /  0. 10.100
  libpostproc    52.  0.100 / 52.  0.100
[dvbsub @ 0x7fe89387c600] Junk in packet
[h264 @ 0x7fe893850000] non-existing SPS 0 referenced in buffering period
    Last message repeated 1 times
[dvbsub @ 0x7fe89387c600] Junk in packet
    Last message repeated 191 times
[mpegts @ 0x7fe89383d800] max_analyze_duration 5000000 reached at 5013600
[NULL @ 0x7fe89387c600] start time is not set in estimate_timings_from_pts
Input #0, mpegts, from 'test.ts':
  Duration: 00:00:28.36, start: 1.400000, bitrate: 1803 kb/s
  Program 1
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:0[0x100]: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x360, 29.97 tbr, 90k tbn, 180k tbc
    Stream #0:1[0x101](eng): Audio: aac ([15][0][0][0] / 0x000F), 44100 Hz, stereo, s16, 109 kb/s
    Stream #0:2[0x102](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
At least one output file must be specified