[FFmpeg-trac] #5533(avcodec:open): Unable to decode some H.264 stream on seeking

[FFmpeg]

#5533: Unable to decode some H.264 stream on seeking
--------------------------------------+-----------------------------------
             Reporter:  Aleksoid1978  |                    Owner:
                 Type:  defect        |                   Status:  open
             Priority:  normal        |                Component:  avcodec
              Version:  git-master    |               Resolution:
             Keywords:  H264          |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  0             |
--------------------------------------+-----------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1


Comment:

 Not a regression afaict and I don't know if this can be fixed, note the
 ''Reinit'' message.
 {{{
 $ ffmpeg -i CSI.Cyber.S02E12.720p.HDTV.HamsterStudio.org_cut.mkv -f null -
 ffmpeg version N-79889-g9486de5 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      55. 24.100 / 55. 24.100
   libavcodec     57. 40.100 / 57. 40.100
   libavformat    57. 36.100 / 57. 36.100
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 45.100 /  6. 45.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, matroska,webm, from
 'CSI.Cyber.S02E12.720p.HDTV.HamsterStudio.org_cut.mkv':
   Metadata:
     encoder         : libebml v1.2.3 + libmatroska v1.3.0
     creation_time   : 2016-05-10 12:07:46
   Duration: 00:00:30.32, start: 0.000000, bitrate: 6044 kb/s
     Stream #0:0: Video: h264 (Main), yuv420p(tv), 1280x720 [SAR 1:1 DAR
 16:9], 23.98 fps, 23.98 tbr, 1k tbn (default)
 [null @ 0x3023040] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf57.36.100
     Stream #0:0: Video: wrapped_avframe, yuv420p, 1280x720 [SAR 1:1 DAR
 16:9], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn (default)
     Metadata:
       encoder         : Lavc57.40.100 wrapped_avframe
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
 Press [q] to stop, [?] for help
 [h264 @ 0x31e1320] Reinit context to 1280x720, pix_fmt: yuv420p
 frame=  727 fps=0.0 q=-0.0 Lsize=N/A time=00:00:30.32 bitrate=N/A
 speed=35.1x
 video:346kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/5533#comment:2>
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