[libav-bugs] [Bug 45] unable to transcode DVB subtitle to DVD subtitle

bugzilla-daemon at aruru.libav.org bugzilla-daemon at aruru.libav.org
Wed Jan 2 15:09:38 CET 2013


https://bugzilla.libav.org/show_bug.cgi?id=45

Albert ARIBAUD <albert.aribaud at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |albert.aribaud at free.fr
         OS/Version|Windows                     |All

--- Comment #4 from Albert ARIBAUD <albert.aribaud at free.fr> 2013-01-02 15:09:38 CET ---
Here <http://dl.free.fr/gkjWDuCWq> can be found an example of a MPEG-TS (DVB-T)
input for which avconv fails to convert subtitles from DVB (dvbsub) to DVD
(dvdsub) format. Here is the command used to try and generate the DVD VOB and
its resulting output:

$ avconv -i input-with-dvb-subs.ts -map 0:0 -map 0:1 -map 0:2 -map 0:3 -map 0:4
-target pal-dvd -c:a copy -c:v copy -c:s dvdsub test.vob
avconv version 0.8.4-6:0.8.4-0ubuntu0.12.10.1, Copyright (c) 2000-2012 the
Libav developers
  built on Nov  6 2012 16:51:11 with gcc 4.7.2
[mpeg2video @ 0xaeb120] mpeg_decode_postinit() failure
    Last message repeated 14 times
[mpegts @ 0xae5b80] max_analyze_duration reached
[NULL @ 0xaf15e0] start time is not set in estimate_timings_from_pts
[NULL @ 0xaf4220] start time is not set in estimate_timings_from_pts
[NULL @ 0xaf4ba0] start time is not set in estimate_timings_from_pts
[NULL @ 0xb11b80] start time is not set in estimate_timings_from_pts
[mpegts @ 0xae5b80] PES packet size mismatch
    Last message repeated 1 times
Input #0, mpegts, from 'input-with-dvb-subs.ts':
  Duration: 00:00:33.95, start: 28062.288911, bitrate: 3087 kb/s
  Program 519 
    Stream #0.0[0x2d0]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR 64:45
DAR 16:9], 15000 kb/s, 27.60 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0.1[0x2da](fra): Audio: mp2, 48000 Hz, stereo, s16, 192 kb/s
    Stream #0.2[0x2db](eng): Audio: mp2, 48000 Hz, stereo, s16, 192 kb/s
    Stream #0.3[0x2e4](fra): Subtitle: dvbsub (hearing impaired)
    Stream #0.4[0x2e5](fra): Subtitle: dvbsub
    Stream #0.5[0x302]: Data: [5][0][0][0] / 0x0005
    Stream #0.6[0x303]: Data: [11][0][0][0] / 0x000B
    Stream #0.7[0x304]: Data: [12][0][0][0] / 0x000C
Output #0, dvd, to 'test.vob':
  Metadata:
    encoder         : Lavf53.21.0
    Stream #0.0: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45 DAR 16:9],
q=2-31, 15000 kb/s, 90k tbn, 90k tbc
    Stream #0.1(fra): Audio: mp2, 48000 Hz, stereo, 192 kb/s
    Stream #0.2(eng): Audio: mp2, 48000 Hz, stereo, 192 kb/s
    Stream #0.3(fra): Subtitle: dvdsub, 200 kb/s (hearing impaired)
    Stream #0.4(fra): Subtitle: dvdsub, 200 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
  Stream #0:3 -> #0:3 (dvbsub -> dvdsub)
  Stream #0:4 -> #0:4 (dvbsub -> dvdsub)
Press ctrl-c to stop encoding
Subtitle encoding failed
$

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