SWF
From Gnash Project Wiki
SWF is a file format that can contain audio, video, and vector-based animations.
Adobe Flash
The SWF format is currently developed by Adobe in conjunction with the Adobe Flash Player and Flash Media Server.
Gnash Support
The Gnash Flash Player has very complete support for versions of SWF up to SWF7, however many SWF8 and SWF9 movies are currently playing as well.
Links
- http://www.adobe.com/devnet/swf/ - Developer page for specs
- http://en.wikipedia.org/wiki/SWF

