Sustainability of Digital Formats: Planning for Library of Congress Collections
Sustainability of Digital Formats: Planning for Library of Congress Collections |
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | Adobe Flash SWF File Format, Version 8 |
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| Description |
Binary file format that Delivers vector graphics (especially animations) and other data types, including "bitmapped" video, over the Internet to the Flash Player. A more complete format description for Flash is offered for SWF_7, version 7 of the specification. See also SWF_Family. In 2005, Adobe purchased Macromedia and a branding changeover began. The documentation for the Flash (SWF) format, version 8, was disseminated from the Adobe Web site but still carried the Macromedia brand on the cover sheet. |
| Production phase | Used for final-state, end-user delivery. |
| Relationship to other formats | |
| Subtype of | SWF_Family, Flash SWF File Format Family |
| Has earlier version | SWF_7, Macromedia Flash SWF File Format, Version 7 |
| LC experience or existing holdings | See SWF_Family |
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| LC preference | See SWF_Family |
| Disclosure | See SWF_Family. |
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| Documentation | The Macromedia Flash (SWF) and Flash Video (FLV) File Format Specification, Version 8 (2005). |
| Adoption | See SWF_Family |
| Licensing and patents | See SWF_Family. |
| Transparency | See SWF_Family. |
| Self-documentation | See SWF_Family. |
| External dependencies | See SWF_Family. |
| Technical protection considerations | See SWF_Family. |
| Moving Image | |
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| Normal rendering | See SWF_Family. |
| Clarity (high image resolution) | See SWF_Family. |
| Functionality beyond normal rendering | See SWF_Family. |
| Sound | |
| Normal rendering | See SWF_Family. |
| Fidelity (high audio resolution) | See SWF_Family. |
| Multiple channels | See SWF_Family. |
| Support for user-defined sounds, samples, and patches | See SWF_Family. |
| Functionality beyond normal rendering | See SWF_Family. |
| Tag | Value | Note |
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| Filename extension | See related format. | See SWF_Family. |
| Internet Media Type | See related format. | See SWF_Family. |
| Magic numbers | Hex: 46 57 53 ASCII: FWS |
For uncompressed files; from the Flash SWF Specification, version 8, p. 267. The next byte in the file provides the version number; for example, Hex 08 (0x08) for version 8. |
| Magic numbers | Hex: 43 57 53 ASCII: CWS |
For compressed files; from the Flash SWF Specification, version 8, p. 267. The next byte in the file provides the version number; for example, Hex 08 (0x08) for version 8. |
| Pronom PUID | fmt/505 |
See http://www.nationalarchives.gov.uk/PRONOM/fmt/505 for Adobe Flash version 78 |
| Wikidata Title ID | Q29011361 |
See https://www.wikidata.org/wiki/Q29011361/ for Shockwave Flash, version 8. |
| General | See SWF_Family. |
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| History | See SWF_Family. |
1Flash documentation for version 8 does not state a number for "their" version of Sorenson but describes the codec as a variant of ITU-T (International Telecommunications Union-Telecommunication Standardization Sector) recommendation H.263 (MPEG-4_V). In early 2006, one of Sorenson's compression applications to produce content for Flash offered the Sorenson_3 codec, described by experts as a variant of ITU-T H.264 (MPEG-4_AVC). By late 2006, Sorenson offered new compression applications with other outputs.
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