On Wed, 12 Dec 2007 11:25:27 +0000 (UTC) ApplePro <applepro7777 at gmail.com> wrote: > Cannot mix video-only files with audio and video files. Try -nosound. That's clearly your problem. Mencoder can't find the audio in logo7.avi. You can try playing the file with -demuxer lavf or -ni and see if it can detect the audio stream then.