Try tunning following command in your server.


Code:
/usr/local/bin/mencoder /web/sites/glowlite/tubebucket.com/video/1.mpg -o /web/sites/glowlite/tubebucket.com/flvideo/1.flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames
See

http://forums.buyscripts.in/viewtopic.php?p=1418