On Wed, 20 Dec 2006 08:38:39 +1300 Wei-Tsun Sun <wsun013 at gmail.com> wrote: > But not if I play the file with following options: > mplayer -demuxer rawvideo -rawvideo w=352:h=288 1.avi As well it shouldn't. The demuxer is not the video codec. It's an AVI file, so it needs the avi demuxer to be playable at all.