Sustainability of Digital Formats: Planning for Library of Congress Collections

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MPEG-2 File with 422 Video and Layer II Audio Encoding

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name MPEG-2 File with 422 Video and Layer II Audio Encoding
Description File containing an MPEG-2 program stream consisting of 4:2:2 Profile MPEG-2 encoded video multiplexed with MPEG-1 and MPEG-2 Layer II encoded audio. The program stream may also be delivered via a serial interface.
Production phase Generally a final-state (end-user delivery) format.
Relationship to other formats
    Contains MPEG-2_422, MPEG-2, 4:2:2 Profile
    Contains MPEG_layer_2_audio, MPEG-1 and MPEG-2 Layer II Audio Encoding

Local use Explanation of format description terms

LC experience or existing holdings See MPEG-2_family
LC preference See MPEG-2_family

Sustainability factors Explanation of format description terms

Disclosure Open standard. See MPEG-2_family
    Documentation See MPEG-2_family
Adoption The authors are still investigating adoption of this combination of video and audio encodings. Comments welcome
    Licensing and patents See MPEG-2_family
Transparency See MPEG-2_family
Self-documentation See MPEG-2_family
External dependencies See MPEG-2_family
Technical protection considerations See MPEG-2_family

Quality and functionality factors Explanation of format description terms

Moving Image
Normal rendering See MPEG-2_422
Clarity (high image resolution) See MPEG-2_422
Functionality beyond normal rendering See MPEG-2_422
Sound
Normal rendering See MPEG_layer_2_audio
Fidelity (high audio resolution) See MPEG_layer_2_audio
Multiple channels See MPEG_layer_2_audio
Functionality beyond normal rendering See MPEG_layer_2_audio

File type signifiers and format identifiers Explanation of format description terms

Tag Value Note

Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


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Last Updated: 02/27/2017