Short description of MP4 Encoder DirectShow Filter 1.0.0.8: Create MPEG4 video and MPEG4 audio files using DirectShow filter, which includes MPEG-4 video ASP encoder, MPEG-4 audio FAAC (Freeware Advanced Audio Codec) and ISO compliant MP4 file writer. Video-audio files can be played with QuickTime, Real and FFDShow based players. Save file as .divx if you play it with DivX player, save it as .m4v or .m4a if you play it with iTunes, save it as .avi if you play it with FFDShow player.