[FFmpeg-trac] #1182(undetermined:open): [ac3] frame sync error

[FFmpeg]

#1182: [ac3] frame sync error
-------------------------------------+-------------------------------------
             Reporter:  carlrosmann  |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  minor        |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket1182/
 The warning has changed but is now also reproducible with `ffmpeg`:
 {{{
 $ ffmpeg -ss 10 -i powderblue.avi -t 50 -f null -
 ffmpeg version N-92592-g5d8df52 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 6.4.0 (GCC)
   configuration: --enable-gpl --enable-libxml2 --enable-gnutls
 --cc=/usr/local/gcc-6.4.0/bin/gcc
   libavutil      56. 24.101 / 56. 24.101
   libavcodec     58. 41.100 / 58. 41.100
   libavformat    58. 23.102 / 58. 23.102
   libavdevice    58.  6.101 / 58.  6.101
   libavfilter     7. 46.101 /  7. 46.101
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, avi, from 'powderblue.avi':
   Metadata:
     encoder         : MEncoder version 3.8.5 building on 20100625
   Duration: 00:01:02.15, start: 0.000000, bitrate: 1349 kb/s
     Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID /
 0x44495658), yuv420p, 692x388 [SAR 1:1 DAR 173:97], SAR 794624:794589 DAR
 8192:4593, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
     Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side),
 fltp, 448 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg4 (native) -> wrapped_avframe (native))
   Stream #0:1 -> #0:1 (ac3 (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [NULL @ 0x398fd80] Failed to parse extradata
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf58.23.102
     Stream #0:0: Video: wrapped_avframe, yuv420p, 692x388 [SAR
 794624:794589 DAR 8192:4593], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn,
 23.98 tbc
     Metadata:
       encoder         : Lavc58.41.100 wrapped_avframe
     Stream #0:1: Audio: pcm_s16le, 48000 Hz, 5.1(side), s16, 4608 kb/s
     Metadata:
       encoder         : Lavc58.41.100 pcm_s16le
 frame= 1199 fps=0.0 q=-0.0 Lsize=N/A time=00:00:50.00 bitrate=N/A speed=
 167x
 video:628kB audio:28125kB subtitle:0kB other streams:0kB global
 headers:0kB muxing overhead: unknown
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/1182#comment:7>
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