This page is included in the codecs category because many people make this mistake: AVI is not a codec, it is a file format. The audio and video in an AVI file are either uncompressed or they use codecs for compression. * Detailed AVI information * Find out all you need to know in John McGowan's AVI Overview. * See DV Video Data and AVI Files for an explanation of "Type 1" and "Type 2" AVI files. * To convert from Type 1 to Type 2 DV AVI format, use the free ULead DV Converter utility. Many more conversion utilities can be found at the www.VideoHelp.com site.