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Format

Adobe Flash

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Summary

Name
Adobe Flash
Version
28
Identifiers
  • MIME: application/x-shockwave-flash
  • PUID: fmt/774
Description
The Adobe Flash format, SWF, previously known as Shockwave Flash or Macromedia Shockwave Flash, and alternatively known as the Small Web Format, is a file format primarily designed for creating interactive multimedia applications. The format iterates rapidly, often in line with new releases of Adobe Flash or Adobe Air. Prior to version 6 all SWF files were uncompressed, however version 6 introduced the option of using zlib compression. Version 13 introduced the option of using LZMA compression.
File extensions
swf
Submitted by
Digital Preservation Department / The National Archives
Developed by
Adobe Systems Incorporated
Supported by
Adobe Systems Incorporated

Relationships

Is previous version of
Is subsequent version of

Internal signatures

SWF 28

Description
Header (FWS then version number) and end tag (..)
Provenance
http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/swf/pdf/swf-file-format-spec.pdf http://www.adobe.com/devnet/articles/flashplayer-air-feature-list.html

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
0
Byte Sequence
4657531C
Endianness
None
Min Frag Length
Absolute from EOF
Offset
0
Max offset
0
Byte Sequence
0000
Endianness
None

SWF 28 - zlib compressed

Description
Header (CWS then version number)
Provenance
http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/swf/pdf/swf-file-format-spec.pdf http://www.adobe.com/devnet/articles/flashplayer-air-feature-list.html

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
0
Byte Sequence
4357531C
Endianness
None

SWF 28 - LZMA compressed

Description
Header (ZWS then version number)
Provenance
http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/swf/pdf/swf-file-format-spec.pdf http://www.adobe.com/devnet/articles/flashplayer-air-feature-list.html

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
0
Byte Sequence
5A57531C
Endianness
None

Changelog

  • V83

    Release date
    17 December 2015

    • Added format

      Adobe Flash 28: Full entry added.

    • Added signature

      Adobe Flash 28: Signature developed through PRONOM Research.