An AVI file takes the form of a single chunk in a RIFF formatted file, which is then subdivided into two mandatory 'chunks' and one optional 'chunk'. It is designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV, and digital audio broadcasting (DAB) possible.ĪVI is a derivative of the Resource Interchange File Format (RIFF), which divides a file's data into blocks, or 'chunks.' A FourCC tag identifies each 'chunk'. MPEG-1 is a standard for lossy compression of video and audio. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. Video/vnd.avi, video/avi, video/msvideo, video/x-msvideoĪudio Video Interleaved (also Audio Video Interleave), known by its initials AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows software. MPEG - Motion Picture Experts Group file interchange format (version 1)
