Sustainability of Digital Formats
Planning for Library of Congress Collections
Sustainability of Digital Formats
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | Quicktime File Format with UYVY (2vuy) Video Encoding |
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| Description |
Quicktime file format wrapping UYVY (the Apple identifier is 2vuy) uncompressed video essence, typically multiplexed with soundtrack audio. |
| 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 | Quicktime, Quicktime File Format |
| Contains | UYVY, UYVY Video Picture Encoding |
| May contain | Audio essences of various types, not discussed at this time. |
| LC experience or existing holdings | No extensive experience. |
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| 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). |
| Disclosure | See QT and UYVY. |
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| Documentation | See QT and UYVY. |
| Adoption | Widely adopted. |
| Licensing and patents | None. |
| Transparency | Relatively transparent; requires tools to write and read. |
| Self-documentation | See QT. |
| External dependencies | None. |
| Technical protection considerations | None. |
| Moving Image | |
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| Normal rendering | Supported |
| Clarity (high image resolution) | See UYVY. |
| Functionality beyond normal rendering | See QT. |
| Tag | Value | Note |
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| Filename extension | See note. | See Quicktime. |
| Internet Media Type | See note. | See Quicktime. |
| Magic numbers | See note. | See Quicktime. |
| Other | 2vuy |
Apple Video Codec four-character code, referenced in a Quicktime file as the feature-values element in the QuickTime Video Codec Type. Comments welcome. |
| General | Appendix F of the Quicktime File Format Specification describes the QuickTime Video Codec Type. This type contains the elements profile atom [Track (video), movie]; part-ID [0x20202020 (universal feature)]; feature-code ['vfmt']; feature-value [Unsigned int(32) (a four-character-code) holding the QuickTime video codec type copied from the ImageDescription structure’s cType field."]. The "feature-values" is the four-character-code found in a video sample description. In this instance: 2vuy. Comments welcome. |
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| History |
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