[FFmpeg-trac] #2145(avformat:new): avi files >1G do not seek with WMP

FFmpeg trac at avcodec.org
Tue May 13 07:38:34 CEST 2014


#2145: avi files >1G do not seek with WMP
------------------------------------+------------------------------------
             Reporter:  cehoyos     |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  avi         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by rupa):

 Replying to [ticket:2145 cehoyos]:
 I am also facing similar issue when I try to play the AVI files that are
 bigger than 1 GB in Windows Media Player.
 My AVI files have following configuration:
 -MJPEG Video 960x720 at 26fps
 -PCM Audio 16 bits/16KHz/1 channel
 Please let me know if there is any fix available for this issue ?

 > (bug 194)
 > If an avi output file is bigger than ~1G, the file starts to play fine
 with WMP, but seeking is impossible, this works fine if the file is
 remuxed with MEncoder.
 >
 > The following file plays fine with WMP, seeking works as expected:
 > {{{
 > $ ffmpeg -f lavfi -i testsrc=s=pal -f s16le -ac 2 -ar 48k -i /dev/zero
 -vcodec dvvideo -acodec pcm_s16le -fs 900M out09.avi
 > }}}
 > The following file also plays fine with WMP, playback stops when the
 user tries to seek:
 > {{{
 > $ ffmpeg -f lavfi -i testsrc=s=pal -f s16le -ac 2 -ar 48k -i /dev/zero
 -vcodec dvvideo -acodec pcm_s16le -fs 1100M out11.avi
 > ffmpeg version N-48954-g06af724 Copyright (c) 2000-2013 the FFmpeg
 developers
 >   built on Jan 16 2013 12:08:10 with gcc 4.7 (SUSE Linux)
 >   configuration: --enable-gpl --disable-indev=jack
 >   libavutil      52. 15.100 / 52. 15.100
 >   libavcodec     54. 89.100 / 54. 89.100
 >   libavformat    54. 60.101 / 54. 60.101
 >   libavdevice    54.  3.102 / 54.  3.102
 >   libavfilter     3. 32.100 /  3. 32.100
 >   libswscale      2.  1.103 /  2.  1.103
 >   libswresample   0. 17.102 /  0. 17.102
 >   libpostproc    52.  2.100 / 52.  2.100
 > [lavfi @ 0x2539940] Estimating duration from bitrate, this may be
 inaccurate
 > 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
 > [s16le @ 0x253b0c0] max_analyze_duration 5000000 reached at 5013333
 microseconds
 > [s16le @ 0x253b0c0] Estimating duration from bitrate, this may be
 inaccurate
 > Guessed Channel Layout for  Input Stream #1.0 : stereo
 > Input #1, s16le, from '/dev/zero':
 >   Duration: N/A, bitrate: 1536 kb/s
 >     Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
 > Output #0, avi, to 'out11.avi':
 >   Metadata:
 >     ISFT            : Lavf54.60.101
 >     Stream #0:0: Video: dvvideo (dvsd / 0x64737664), yuv420p, 720x576
 [SAR 1:1 DAR 5:4], q=2-31, 200 kb/s, 25 tbn, 25 tbc
 >     Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
 stereo, s16, 1536 kb/s
 > Stream mapping:
 >   Stream #0:0 -> #0:0 (rawvideo -> dvvideo)
 >   Stream #1:0 -> #0:1 (pcm_s16le -> pcm_s16le)
 > Press [q] to stop, [?] for help
 > frame= 7248 fps=431 q=0.0 Lsize= 1074263kB time=00:04:49.92
 bitrate=30354.5kbits/s
 > video:1019250kB audio:54360kB subtitle:0 global headers:0kB muxing
 overhead 0.060863%
 > }}}
 > The file can be "fixed" with the following MEncoder command line:
 > {{{
 > $ mencoder out11.avi -ovc copy -oac copy -o outmenc.avi
 > }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/2145#comment:9>
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