[FFmpeg-trac] #2086(undetermined:new): Teletext subtitles

[FFmpeg]

#2086: Teletext subtitles
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:             |                 Status:  new
  enhancement                        |              Component:
               Priority:  wish       |  undetermined
                Version:  git-       |               Keywords:  teletext
  master                             |               Blocking:
             Blocked By:             |  Analyzed by developer:  0
Reproduced by developer:  0          |
-------------------------------------+-------------------------------------
 I will upload a sample with two teletext subtitle streams (on pages 777
 and 778). They can be viewed with the following MPlayer command lines (use
 "X" and "Q" to switch to the appropriate subtitle pages):
 $ mplayer teletextsubtitles.ts -demuxer mpegts -sid 106
 $ mplayer teletextsubtitles.ts -demuxer lavf -sid 0
 FFmpeg cannot decode the subtitles.
 {{{
 $ ffmpeg -i teletextsubtitles.ts
 ffmpeg version N-48311-gc36302a Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Dec 30 2012 19:01:34 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      52. 13.100 / 52. 13.100
   libavcodec     54. 81.100 / 54. 81.100
   libavformat    54. 50.104 / 54. 50.104
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 30.102 /  3. 30.102
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS referenced
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] no frame!
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS referenced
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] no frame!
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS referenced
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] no frame!
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS referenced
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] no frame!
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS referenced
 [h264 @ 0x346e460] non-existing SPS 0 referenced in buffering period
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] non-existing PPS 0 referenced
 [h264 @ 0x346e460] decode_slice_header error
 [h264 @ 0x346e460] no frame!
 [mpegts @ 0x346a540] Stream #3: not enough frames to estimate rate;
 consider increasing probesize
 [NULL @ 0x34701e0] start time is not set in estimate_timings_from_pts
 [mpegts @ 0x346a540] PES packet size mismatch
     Last message repeated 1 times
 Input #0, mpegts, from 'teletextsubtitles.ts':
   Duration: 00:00:55.32, start: 0.091256, bitrate: 14610 kb/s
   Program 137
     Stream #0:0[0x30]: Video: h264 (Main) ([27][0][0][0] / 0x001B),
 yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x40](ita): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 384 kb/s
     Stream #0:2[0x41](und): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 384 kb/s
     Stream #0:3[0x6a](ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
 At least one output file must be specified
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2086>
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