[root@sta840 mplayer]# ffmpeg -i /var/www/html/pro/video/9.avi -acodec mp3 -ar 22050 -ab 32 -f flv /var/www/html/pro/flvideo/9.flv

FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --enable-libmp3lame --enable-libogg --enable-libvorbis --disable-mmx --enable-shared
libavutil version: 49.4.0
libavcodec version: 51.40.4
libavformat version: 51.12.1
built on May 15 2007 11:52:47, gcc: 3.4.6 20060404 (Red Hat 3.4.6-3)
Input #0, avi, from '/var/www/html/pro/video/9.avi':
Duration: 00:00:19.5, start: 0.000000, bitrate: 2210 kb/s
Stream #0.0: Video: mjpeg, yuvj422p, 320x240, 15.00 fps(r)
Stream #0.1: Audio: pcm_u8, 11024 Hz, mono, 88 kb/s
File '/var/www/html/pro/flvideo/9.flv' already exists. Overwrite ? [y/N] y
Output #0, flv, to '/var/www/html/pro/flvideo/9.flv':
Stream #0.0: Video: flv, yuv420p, 320x240, q=2-31, 200 kb/s, 15.00 fps(c)
Stream #0.1: Audio: 0x0000, 22050 Hz, mono, 0 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[flv @ 0x453928]removing common factors from framerate
Unsupported codec for output stream #0.1


Codec problem?