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AVI (Audio Video Interleaved) with Indeo Codec

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name AVI (Audio Video Interleaved) with Indeo Video Codec
Description File format with an Indeo video bitstream with other data chunks, e.g., audio, in an AVI wrapper. Indeo versions 3.1 and 3.2 employ vector quantization; versions 4 and 5 use forms of wavelet compression.
Production phase Generally a final-state format for enduser delivery.
Relationship to other formats
    Subtype of AVI, AVI (Audio Video Interleaved) File Format
    May contain Indeo_3, Indeo Video Codec, Version 3
    May contain Indeo_4 video codec, not separately documented
    May contain Indeo_5, Indeo Video Codec, Version 5
    May contain WAVE, WAVE Audio File Format
    May contain MP3_CBR, MP3, Constant Bit Rate

Local use Explanation of format description terms

LC experience or existing holdings American Memory produced AVI_Indeo files in 1992 and 1993, using version 3.1 or 3.2 of the Indeo codec, options set at 15 fps and 320x240 pixels, and yielding a data rate of about 188 Kb/s. These AVI files were retired and replaced by MPEG-1 and QuickTime files in 1994 and 1995.
LC preference See AVI.

Sustainability factors Explanation of format description terms

Disclosure See AVI, Indeo_3, and Indeo_5.
    Documentation See AVI, Indeo_3, and Indeo_5.
Adoption AVI is widely adopted for video production and filemaking; in 2000 or earlier, the expert commentator John McGowan wrote, "Indeo R3.2 is one of the default Video for Windows codecs."
    Licensing and patents See AVI, Indeo_3, and Indeo_5.
Transparency See Indeo_3 and Indeo_5.
Self-documentation See AVI
External dependencies See AVI
Technical protection considerations See AVI

Quality and functionality factors Explanation of format description terms

Moving Image
Normal rendering Good support.
Clarity (high image resolution) Moderate to very good, given that this is a format typically used for compression and does not support interlaced video. Outcome will depend on the version of Indeo employed, the extent of compression, and the encoder used.
Functionality beyond normal rendering See AVI

File type signifiers and format identifiers Explanation of format description terms

Tag Value Note
Filename extension avi
 
Internet Media Type See related format. 

See AVI

Magic numbers See related format. 

See AVI

Microsoft FOURCC IV32
IV41
IV50
See the list of FOURCC codes, which also lists a number of additional IV FOURCCs. John McGowan states that IV32 is generally used for Indeo 3; IV41 for Indeo 4, and IV50 for Indeo 5. FOURCC codes are no longer managed by Microsoft, which has developed a new mechanism for identifying rich media types.

Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


Useful references

URLs


Last Updated: Tuesday, 21-Feb-2017 07:56:33 EST