Hello! I just did the following in the hope that only audio would be compressed and video would be left as is: mencoder in.avi -oac mp3lame -lameopts q=0:vbr=0:aq=0 -ovc copy -o out.avi But for some reason, this changes aspect ratio. Is this by intent? -- No software patents! -- Josef Wolf -- jw at raven.inka.de --