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*Details: File format summary

   
 

 

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Summary

Name Audio/Video Interleaved Format
Version  
Other names AVI (Generic)
Identifiers PUID:  fmt/5
Apple Uniform Type Identifier:  public.avi
MIME:  video/x-msvideo
Family  
Classification Audio, Video
Disclosure Full
Description Audio/Video Interleaved Format (AVI) is a chunk-based video format developed by Microsoft, based on the generic Resource Interchange File Format (RIFF) specification developed by Microsoft and IBM. Structurally, an AVI file is composed of a number of chunks, each comprising a four character code chunk identifier, the chunk size, and the chunk data. It comprises a RIFF header with an AVI data type identifier, followed by a series of chunks. Every file must include two List chunks. The first List chunk is the main AVI header chunk, which contain one or more Stream Header chunks, one for each data stream, describing the format of the data streams. The second LIST chunk is the ‘movi’ chunk, which contains the actual data for the audio and video data streams. Other optional chunks are also allowed. The format supports a wide variety of compressed and uncompressed video encodings, but all audio streams are stored in Microsoft’s Waveform Audio format.
Orientation Binary
Byte order Little-endian (Intel)
Related file formats None.
Technical Environment  
Released  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source Digital Preservation Department / The National Archives
Source date 11 Mar 2005
Source description  
Last updated 02 Aug 2005
Note  
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