[FFmpeg-trac] #6248(undetermined:new): non monotonically increasing dts - skip badly broken subtitles

[FFmpeg]

#6248: non monotonically increasing dts - skip badly broken subtitles
-------------------------------------+-------------------------------------
             Reporter:  yurtesen     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  3.2.1        |  undetermined
             Keywords:  dvbsub       |               Resolution:
  av_interleaved_write_frame         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by yurtesen):

 Please ignore the invalid frame dimensions errors. They are probably due
 to me cutting the file very small using `dd`.

 The actual problem is:

 {{{
 [mpegts @ 0x207a760] Application provided invalid, non monotonically
 increasing dts to muxer in stream 2: 281690 >= 7438
 av_interleaved_write_frame(): Invalid argument
 }}}

 Full output:

 {{{
 $ ./ffmpeg -y -fix_sub_duration -i vera.ts -c:s copy vera2.ts
 ffmpeg version N-84156-g23f3f92 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
   configuration:
   libavutil      55. 48.100 / 55. 48.100
   libavcodec     57. 83.100 / 57. 83.100
   libavformat    57. 66.104 / 57. 66.104
   libavdevice    57.  3.100 / 57.  3.100
   libavfilter     6. 77.100 /  6. 77.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
 [mp3 @ 0x20400c0] Header missing
 [mp3 @ 0x207b920] Header missing
 [mpeg2video @ 0x203eee0] Invalid frame dimensions 0x0.
     Last message repeated 10 times
 [mpegts @ 0x203a400] PES packet size mismatch
     Last message repeated 5 times
 Input #0, mpegts, from 'vera.ts':
   Duration: 00:00:02.16, start: -2.867556, bitrate: 877 kb/s
   Program 17
     Stream #0:0[0x200]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k
 tbn, 50 tbc
     Stream #0:1[0x28a](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 224 kb/s
     Stream #0:2[0x403](fin): Subtitle: dvb_subtitle ([6][0][0][0] /
 0x0006)
     Stream #0:3[0x1388](fin): Subtitle: dvb_teletext ([6][0][0][0] /
 0x0006)
   No Program
     Stream #0:4[0x28c]: Audio: mp2, 48000 Hz, stereo, s16p, 160 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg2video (native))
   Stream #0:1 -> #0:1 (mp2 (native) -> mp2 (native))
   Stream #0:2 -> #0:2 (copy)
 Press [q] to stop, [?] for help
 [mp2 @ 0x207c2e0] Header missing
 Error while decoding stream #0:1: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x207be00] Invalid frame dimensions 0x0.
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpegts @ 0x203a400] PES packet size mismatch
 [mpeg2video @ 0x207be00] ac-tex damaged at 16 0
 [mpeg2video @ 0x207be00] Warning MVs not available
 [mpeg2video @ 0x207be00] concealing 1620 DC, 1620 AC, 1620 MV errors in I
 frame
 Output #0, mpegts, to 'vera2.ts':
   Metadata:
     encoder         : Lavf57.66.104
     Stream #0:0: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 64:45 DAR
 16:9], q=2-31, 200 kb/s, 25 fps, 90k tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.83.100 mpeg2video
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
     Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
     Metadata:
       encoder         : Lavc57.83.100 mp2
     Stream #0:2(fin): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
 [mpegts @ 0x207a760] Application provided invalid, non monotonically
 increasing dts to muxer in stream 2: 281690 >= 7438
 av_interleaved_write_frame(): Invalid argument
 frame=    0 fps=0.0 q=0.0 Lsize=      37kB time=00:00:03.12 bitrate=
 95.6kbits/s speed=36.2x
 video:0kB audio:28kB subtitle:4kB other streams:0kB global headers:0kB
 muxing overhead: 13.177638%
 Conversion failed!

 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/6248#comment:2>
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