[FFmpeg-trac] #1003(avformat:open): matroska file hits eof after any seek

[FFmpeg]

#1003: matroska file hits eof after any seek
------------------------------------+------------------------------------
             Reporter:  DonMoir     |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mkv         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+------------------------------------
Changes (by cehoyos):

 * keywords:   => mkv
 * status:  new => open
 * version:  unspecified => git-master
 * reproduced:  0 => 1


Comment:

 Fails differently if the file is cut.
 Sample uploaded to http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket1003/
 {{{
 $ ffmpeg -ss 1 -i bad_seek_matroska_eof.mkv out.avi
 ffmpeg version N-37956-gd493170 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Feb 17 2012 19:42:03 with gcc 4.5.3
   configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
   libavutil      51. 39.100 / 51. 39.100
   libavcodec     54.  3.100 / 54.  3.100
   libavformat    54.  1.100 / 54.  1.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 62.101 /  2. 62.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  6.100 /  0.  6.100
 Input #0, matroska,webm, from 'bad_seek_matroska_eof.mkv':
   Metadata:
     title           :
 Backstreet.Boys.Live.From.O2.Arena.2008.HDTVRip.1080p.-VoLoNa by
 HDTVshek.HET
   Duration: 00:01:50.84, start: 0.000000, bitrate: 7683 kb/s
     Stream #0:0(eng): Video: h264 (High), yuv420p, 1920x1080 [SAR 1:1 DAR
 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
     Metadata:
       title           :
 Backstreet.Boys.Live.From.O2.Arena.2008.HDTVRip.1080p.-VoLoNa
     Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s
 (default)
     Metadata:
       title           : AC3 5.1 at 384Kbps
 [buffer @ 0x1a57d00] w:1920 h:1080 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:
 Incompatible sample format 's16' for codec 'ac3', auto-selecting format
 'flt'
 Output #0, avi, to 'out.avi':
   Metadata:
     INAM            :
 Backstreet.Boys.Live.From.O2.Arena.2008.HDTVRip.1080p.-VoLoNa by
 HDTVshek.HET
     ISFT            : Lavf54.1.100
     Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 23.98 tbn, 23.98 tbc (default)
     Metadata:
       title           :
 Backstreet.Boys.Live.From.O2.Arena.2008.HDTVRip.1080p.-VoLoNa
     Stream #0:1(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz,
 5.1(side), flt, 128 kb/s (default)
     Metadata:
       title           : AC3 5.1 at 384Kbps
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 -> mpeg4)
   Stream #0:1 -> #0:1 (ac3 -> ac3)
 Press [q] to stop, [?] for help
 frame=    0 fps=  0 q=0.0 Lsize=      10kB time=00:00:00.00 bitrate=
 0.0kbits/s
 video:0kB audio:0kB global headers:0kB muxing overhead inf%
 Output file is empty, nothing was encoded (check -ss / -t / -frames
 parameters if used)
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1003#comment:1>
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