[FFmpeg-trac] #4335(avformat:new): mpeg fifo assert while remuxing

[FFmpeg]

#4335: mpeg fifo assert while remuxing
-------------------------------------+-------------------------------------
               Reporter:  ubitux     |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avformat
                Version:  git-       |               Keywords:  mpeg dvd
  master                             |  dvdsub assert
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Get a long DVD input (might be a bit slow):

 {{{
 % ./ffmpeg -f lavfi -i testsrc=s=pal -t 00:30:00 -target pal-dvd -y
 test.mpg
 ffmpeg version N-70272-g3e0ae19 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.9.2 (GCC) 20150204 (prerelease)
   configuration: --prefix=/home/ux/local --enable-gpl --enable-nonfree
 --enable-libx264 --enable-libfaac --enable-libvorbis --enable-
 libfontconfig --enable-libfreetype --enable-libass --enable-libmp3lame
 --samples=/home/ux/fate-samples --assert-level=2
   libavutil      54. 19.100 / 54. 19.100
   libavcodec     56. 26.100 / 56. 26.100
   libavformat    56. 23.105 / 56. 23.105
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 11.102 /  5. 11.102
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, lavfi, from 'testsrc=s=pal':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 720x576
 [SAR 1:1 DAR 5:4], 25 tbr, 25 tbn, 25 tbc
 Output #0, dvd, to 'test.mpg':
   Metadata:
     encoder         : Lavf56.23.105
     Stream #0:0: Video: mpeg2video, yuv420p, 720x576 [SAR 1:1 DAR 5:4],
 q=2-31, 6000 kb/s, 25 fps, 90k tbn, 25 tbc
     Metadata:
       encoder         : Lavc56.26.100 mpeg2video
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
 Press [q] to stop, [?] for help
 frame=45000 fps=247 q=2.0 Lsize=  208886kB time=00:29:59.96 bitrate=
 950.7kbits/s
 video:197278kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 5.883934%
 }}}

 Remux it with DVD subs:

 {{{
 % ./ffmpeg -i test.mpg -i gt-en.sub -map 0:1 -map 1:0 -c copy -f mpeg -y
 /dev/null
 ffmpeg version N-70272-g3e0ae19 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.9.2 (GCC) 20150204 (prerelease)
   configuration: --prefix=/home/ux/local --enable-gpl --enable-nonfree
 --enable-libx264 --enable-libfaac --enable-libvorbis --enable-
 libfontconfig --enable-libfreetype --enable-libass --enable-libmp3lame
 --samples=/home/ux/fate-samples --assert-level=2
   libavutil      54. 19.100 / 54. 19.100
   libavcodec     56. 26.100 / 56. 26.100
   libavformat    56. 23.105 / 56. 23.105
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 11.102 /  5. 11.102
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 [NULL @ 0x3202880] start time for stream 0 is not set in
 estimate_timings_from_pts
 Input #0, mpeg, from 'test.mpg':
   Duration: 00:30:00.00, start: 0.540000, bitrate: 950 kb/s
     Stream #0:0[0x1bf]: Data: dvd_nav_packet
     Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576
 [SAR 1:1 DAR 5:4], max. 9000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
 Input #1, mpeg, from 'gt-en.sub':
   Duration: 01:45:07.80, start: 69.600000, bitrate: 5 kb/s
     Stream #1:0[0x20]: Subtitle: dvd_subtitle
 Output #0, mpeg, to '/dev/null':
   Metadata:
     encoder         : Lavf56.23.105
     Stream #0:0: Video: mpeg2video, yuv420p, 720x576 [SAR 1:1 DAR 5:4],
 q=2-31, max. 9000 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
     Stream #0:1: Subtitle: dvd_subtitle
 Stream mapping:
   Stream #0:1 -> #0:0 (copy)
   Stream #1:0 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 Assertion av_fifo_size(stream->fifo) == 0 failed at
 libavformat/mpegenc.c:1185s/s
 zsh: abort (core dumped)  ./ffmpeg -i test.mpg -i gt-en.sub -map 0:1 -map
 1:0 -c copy -f mpeg -y
 }}}

 Sub can be found at http://lucy.pkh.me/samples/gt-en.sub

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4335>
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