File extension AVI is used for multimedia files in Audio Video Interleave format. An AVI sample file is provided. Free AVI players and editors are listed.
What is AVI? AVI is a short name for Audio Video Interleave,
is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows technology
Technical notes on MPEG file formats:
AVI files use RIFF container file format.
AVI files support multiple streaming audio and video.
AVI files support various codecs. Examples are: Cinepak Codec by Radius, DivX 5.0.1 Codec,
Intel 4:2:0 Video 5.10, Microsoft Video 1, MS MPEG-4 3688 V1, etc.
Here are the first 128 bytes of a sample AVI file dumped in HEX values: