@exrty Nandub is not the best way to mux ogg and avi files (the sound probably gets out of synch), though you claim to have solved your problem. Try using OggMux (find it in Doom9's Downloads section) to mux ogg and avi and browse "New A/V Formats" and "Audio Encoding" in the forum regarding Ogg. What do you mean by "vorbis enabled"? Ogg is the name of the audio format and Ogm is the media stream container. When you install the required filters you can play both ogg and ogm in many players such as Zoom Player, BSPlayer, etc. Read the guides in The Guides section and search the filters-tools you need in Downloads section. iago