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 The Civil Rights History Project in the American Folklife Center contains Apple ProRes 422 and Apple ProRes 422 HQ files.
LC preference The Library of Congress Recommended Formats Statement (RFS) lists Apple ProRes 4444, 4444 XQ (see Apple ProRes 4444 Codec Family) and 422 HQ in a QuickTime wrapper as a Preferred format for Video - File-Based and Physical Media. See also QuickTime

Sustainability factors Explanation of format description terms

Disclosure See QuickTime
    Documentation See QuickTime and Apple ProRes 422 Codec Family.
Adoption According to Annie Schweikert in A Guide to the QuickTime File Format (link available through Internet Archive), "ProRes has been associated with QuickTime since its release in 2001, when the two were bundled together in Apple’s Final Cut software. Though certainly a product of Apple’s own marketing, the pairing makes sense from a structural standpoint as well, as Apple designed ProRes to mimic QuickTime’s atomic structure." Wide adoption for 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 (link available through Internet Archive) 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

Pronom PUID See note. 

See QuickTime


Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


Useful references

URLs


Last Updated: 08/04/2021