** MUXER_LAVF *****************************************************************
REMEMBER: MEncoder's libavformat muxing is presently broken and can generate
INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer
will play these INCORRECT files as if nothing were wrong!
*******************************************************************************
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
Compiler did not align stack variables. Libavcodec has been miscompiled
and may be very slow or crash. This is not a bug in libavcodec,
but in the compiler. You may try recompiling using gcc >= 4.2.
Do not report crashes to FFmpeg developers.
[NULL @ 0x9449c0]flv does not support that sample rate, choose from (44100, 22050, 11025).
Seek failed
FFmpeg version SVN-r12920, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  configuration: --enable-libmp3lame --disable-mmx --enable-shared
  libavutil version: 49.6.0
  libavcodec version: 51.55.0
  libavformat version: 52.13.0
  libavdevice version: 52.0.0
  built on Apr 22 2008 03:29:06, gcc: 3.4.6 20060404 (Red Hat 3.4.6-9)
/var/www/html/vdata/57.flv: Unknown format