DVB subtitles with multiple languages

[Carl Eugen Hoyos]

We have a DVB recording that does not show subtitles because they contain multiple languages in samples/MPEG2/subcc/HK_DVB_w_subtitle.ts

$ ffmpeg -probesize 2G -analyzeduration 2G -i HK_DVB_w_subtitle.ts
ffmpeg version N-71367-gb1b5831 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  libavutil      54. 22.101 / 54. 22.101
  libavcodec     56. 34.100 / 56. 34.100
  libavformat    56. 30.100 / 56. 30.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 13.101 /  5. 13.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
[h264 @ 0x2f8aa20] non-existing SPS 0 referenced in buffering period
[h264 @ 0x2f8aa20] non-existing PPS 0 referenced
[h264 @ 0x2f8aa20] non-existing SPS 0 referenced in buffering period
[h264 @ 0x2f8aa20] non-existing PPS 0 referenced
[h264 @ 0x2f8aa20] decode_slice_header error
[h264 @ 0x2f8aa20] non-existing PPS 0 referenced
[h264 @ 0x2f8aa20] decode_slice_header error

...

[h264 @ 0x2f8aa20] non-existing PPS 0 referenced
[h264 @ 0x2f8aa20] decode_slice_header error
[h264 @ 0x2f8aa20] no frame!
[mpegts @ 0x2f85400] DVB subtitles with multiple languages is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[mpegts @ 0x2f85400] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)

...

[mpegts @ 0x2f85400] DVB subtitles with multiple languages is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[mpegts @ 0x2f85400] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[mpegts @ 0x2f85400] PES packet size mismatch
    Last message repeated 5 times
Input #0, mpegts, from 'HK_DVB_w_subtitle.ts':
  Duration: 00:00:26.14, start: 480.455600, bitrate: 12534 kb/s
  Program 1
    Stream #0:0[0x44]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:1[0x45]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
    Stream #0:2[0x46]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k tbn, 50 tbc
    Stream #0:3[0x47](CHI): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    Stream #0:4[0x48](CHS,ENG): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
At least one output file must be specified

[Michael Niedermayer]

Does stream 4 really contain 2 languages ? it looks like theres just one substream in it

[Carl Eugen Hoyos]

An old version of vlc also shows no English subtitles here.

[Carl Eugen Hoyos]

Additional sample in ​http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket4469/
​http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/208510