Support text subtitles in mpeg transport streams

[Carl Eugen Hoyos]

​http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/173165
​http://samples.ffmpeg.org/sub/dvbtextualsubtitles.ts
The sample contains text subtitles in a transport stream, this is apparently supported by VDR.

$ ffmpeg -i dvbtextualsubtitles.ts
ffmpeg version N-59860-g53e6977 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jan 15 2014 10:01:34 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  libavutil      52. 62.100 / 52. 62.100
  libavcodec     55. 48.101 / 55. 48.101
  libavformat    55. 23.103 / 55. 23.103
  libavdevice    55.  5.102 / 55.  5.102
  libavfilter     4.  1.100 /  4.  1.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
[mpeg2video @ 0x1cae120] Invalid frame dimensions 0x0.
    Last message repeated 13 times
[NULL @ 0x1cacc60] start time is not set in estimate_timings_from_pts
[mpegts @ 0x1ca8100] PES packet size mismatch
Input #0, mpegts, from 'dvbtextualsubtitles.ts':
  Duration: 00:00:34.15, start: 5684.061789, bitrate: 2279 kb/s
  Program 2904
    Stream #0:0[0x40c](txt): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    Stream #0:1[0x40d](por): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    Stream #0:2[0x45a](por): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 192 kb/s (clean effects)
    Stream #0:3[0x4dc]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 480x480 [SAR 16:9 DAR 16:9], max. 4492 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
At least one output file must be specified

[Anssi Hannula]

Fixed description, XBMC => VDR.