mencoder -vf scale=400:300 -tv device=/dev/video1:driver=v4l2:input=2:norm=ntsc tv:// -ovc xvid -xvidencopts bitrate=6000 -oac lavc -lavcopts acodec=ac3:abitrate=512 -srate 44100 -af lavcresample=44100 -o /root/testxvid.avi