Sustainability of Digital Formats: Planning for Library of Congress Collections

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MPEG-4 File Format, V.2, with AVC, No Profile Indicated

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name MPEG-4 file format, version 2, with Advanced Video Coding, no profile indicated (common name)
Description Combination of a file format (wrapper) and encoding category (Advanced Video Coding; AVC, no profile indicated).
Production phase Generally a final-state (end-user delivery) format, may also serve as middle-state format.
Relationship to other formats
    Subtype of MP4_FF_2, MPEG-4 File Format, Version 2
    May contain MPEG-4_AVC, MPEG-4, Advanced Video Coding (Part 10) (H.264)
    May contain AAC_MP4, Advanced Audio Coding (MPEG-4)
    May contain AAC_MP4_LC, AAC (MPEG-4) Low Complexity Object
    May contain Additional audio, graphics, and scene graph stream types. Not documented at this time.

Local use Explanation of format description terms

LC experience or existing holdings  
LC preference  

Sustainability factors Explanation of format description terms

Disclosure Open standard. Developed through ISO technical program JTC 1/SC 29 for coding of audio, picture, multimedia and hypermedia information by Working Group 11 (WG11) aka the Moving Picture Experts Group (MPEG).
    Documentation See MP4_FF_2 and MPEG-4_AVC.
Adoption See MP4_FF_2.
    Licensing and patents See MP4_FF_2.
Transparency See MPEG-4_AVC.
Self-documentation See MP4_FF_2.
External dependencies See MP4_FF_2.
Technical protection considerations See MP4_FF_2.

Quality and functionality factors Explanation of format description terms

Moving Image
Normal rendering See MP4_FF_2.
Clarity (high image resolution) See MPEG-4_AVC.
Functionality beyond normal rendering See MP4_FF_2.
Sound
Fidelity (high audio resolution) See MP4_FF_2.
Multiple channels See MP4_FF_2.
Functionality beyond normal rendering See MP4_FF_2.

File type signifiers and format identifiers Explanation of format description terms

Tag Value Note
Filename extension See related format. 

See MP4_FF_2

Internet Media Type See related format. 

See MP4_FF_2

Magic numbers See related format. 

See MP4_FF_2

File type brand (ISO Base Media File Format) See related format. 

See MP4_FF_2


Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


Useful references

URLs


Last Updated: Tuesday, 21-Feb-2017 14:25:47 EST