Sustainability of Digital Formats: Planning for Library of Congress Collections

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AVI OpenDML File Format with YUY2 Video Encoding

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name AVI OpenDML File Format with YUY2 Video Encoding
Description

File format that wraps YUY2 uncompressed video essence data with other data chunks, e.g., audio, in AVI_OpenDML_1_02.

Production phase Generally employed in post-production or editing (middle phase) and in limited modes of dissemination (final phase).
Relationship to other formats
    Subtype of AVI_OpenDML_1_02, AVI File Format with OpenDML Extensions, Version 1.02
    Contains YUY2, UYUV Video Picture Encoding
    May contain Audio essences of various types, not discussed at this time.

Local use Explanation of format description terms

LC experience or existing holdings No extensive experience.
LC preference None. For preservation reformatting, the Library of Congress' Packard Campus for Audio-Visual Conservation has chosen MXF_OP1a_JP2_LL (lossless JPEG 2000 wrapped in MXF operational pattern 1a).

Sustainability factors Explanation of format description terms

Disclosure See AVI and YUY2.
    Documentation See AVI and YUY2.
Adoption Widely adopted.
    Licensing and patents None.
Transparency Relatively transparent; requires tools to write and read.
Self-documentation See AVI.
External dependencies None.
Technical protection considerations None.

Quality and functionality factors Explanation of format description terms

Moving Image
Normal rendering Supported
Clarity (high image resolution) See YUY2 .
Functionality beyond normal rendering See AVI.

File type signifiers and format identifiers Explanation of format description terms

Tag Value Note
Filename extension See related format.  See AVI.
Internet Media Type See related format.  See AVI.
Magic numbers See related format.  See AVI.
Microsoft FOURCC YUY2
 

Notes Explanation of format description terms

General Derived from a Microsoft developers page: "The AVISTREAMHEADER structure contains information about one stream in an AVI file." It contains an fccType element ("vids" in this case, for video) followed by a fccHandler element that "contains a FOURCC that identifies a specific data handler. . . . For audio and video streams, this specifies the codec for decoding the stream." This compiler has seen this string in an AVI file: LISTt strlstrh8 vidsYUY2. Comments welcome.
History  

Format specifications Explanation of format description terms


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Last Updated: Monday, 27-Feb-2017 09:55:22 EST