[Ffmpeg-devel] Bug with WMV conversion?

Richard Flack rflack
Wed Feb 14 20:08:22 CET 2007

Hi guys/gals,

Trying to include as much information as possible, despite being
fairly new to ffmpeg.

I've compiled the latest SVN release of ffmpeg and I'm attempting to
transcode from a .wmv file to an .flv file.  ffmpeg seems to have
crashed or just exited randomly, leaving the output file at zero bytes
and naturally containing no content.

The command I used was:
ffmpeg -i Change.wmv Change.flv

Here's the console output (removed paths/etc)

Command: ffmpeg -i Change.wmv Change.flv

FFmpeg version SVN-r7983, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --enable-gpl --enable-libmp3lame --enable-shared --prefix=/usr
  libavutil version: 49.3.0
  libavcodec version: 51.33.0
  libavformat version: 51.10.0
  built on Feb 14 2007 13:02:35, gcc: 3.4.6 20060404 (Red Hat 3.4.6-3)

Seems stream 3 codec frame rate differs from container frame rate:
1000.00 (1000/1) -> 24.00 (24/1)
Input #0, asf, from 'Change.wmv':
  Duration: 00:04:32.2, start: 3.000000, bitrate: 664 kb/s
  Stream #0.0: Audio: wmav2, 44100 Hz, stereo, 64 kb/s
  Stream #0.1: Audio: wmav2, 44100 Hz, stereo, 96 kb/s
  Stream #0.2: Video: wmv3, 320x240, 1000.00 fps(r)
  Stream #0.3: Video: wmv3, yuv420p, 416x312, 24.00 fps(r)
  Stream #0.4: Audio: wmav2, 44100 Hz, mono, 32 kb/s
  Stream #0.5: Video: wmv3, 240x180, 1000.00 fps(r)
File 'Change.flv' already exists. Overwrite ? [y/N] y
PIX_FMT_YUV420P will be used as an intermediate format for rescaling
Output #0, flv, to 'Change.flv':
  Stream #0.0: Video: flv, yuv420p, 240x180, q=2-31, 200 kb/s, 1000.00 fps(c)
  Stream #0.1: Audio: mp3, 44100 Hz, mono, 64 kb/s
Stream mapping:
  Stream #0.2 -> #0.0
  Stream #0.0 -> #0.1
Press [q] to stop encoding
[wmav2 @ 0x447928]buffer smaller then AVCODEC_MAX_AUDIO_FRAME_SIZE
frame=    0 q=0.0 Lsize=       0kB time=10000000000.0 bitrate=   0.0kbits/s
video:0kB audio:0kB global headers:0kB muxing overhead inf%

Any ideas?


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