Sustainability of Digital Formats: Planning for Library of Congress Collections

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QuickTime Video, Apple ProRes 422 Codec Family

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name QuickTime Video, Apple ProRes 422 Codec Family
Description QuickTime file format that wraps an Apple ProRes 422 Codec video bitstream with other data chunks, e.g., audio.
Production phase Production (initial state) and post production (middle state).
Relationship to other formats
    Subtype of QuickTime, QuickTime File Format
    Contains Apple_ProRes_422_Codec_Family, Apple ProRes 422 Codec Family
    May contain Audio streams not documented at this time.

Local use Explanation of format description terms

LC experience or existing holdings See QuickTime
LC preference See QuickTime

Sustainability factors Explanation of format description terms

Disclosure See QuickTime
    Documentation See QuickTime and Apple ProRes 422 Codec Family.
Adoption Wide adoption professional moving image production especially in the creation of documentaries and other programs for broadcast television. See Apple ProRes 422 Codec Family. Within the federal sector, examples include the American Folklife Center Civil Rights History Project and the NOAA Okeanus Explorer Project both of which are detailed in the FADGI Creating and Archiving Born Digital Video report. Camera manufacturers such as ARRI have integrated ProRes in QuickTime support.
    Licensing and patents See QuickTime
Transparency Depends upon algorithms and tools to read; will require sophistication to build tools.
Self-documentation See QuickTime
External dependencies See QuickTime
Technical protection considerations See QuickTime

Quality and functionality factors Explanation of format description terms

Moving Image
Normal rendering Good support.
Clarity (high image resolution) See Apple ProRes 422 Codec Family
Functionality beyond normal rendering See QuickTime.

File type signifiers and format identifiers Explanation of format description terms

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

See QuickTime

Magic numbers See related format. 

See QuickTime

Other icpn

Undocumented ProRes frame type ID in frame container atom. See Apple ProRes 422 Codec Family

Pronom PUID fmt/797
See http://www.nationalarchives.gov.uk/PRONOM/fmt/797. However, fmt/797 includes signature values for QuickTime, the usual wrapper for the Apple ProRes Family, but these signature values apply to all QuickTime files, not just those containing Apple ProRes 422 encodings.

Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


Useful references

URLs


Last Updated: 07/27/2017