What resources did you use to implement gif89a?
You already mentioned the specification ( http://www.w3.org/Graphics/GIF/spec-gif89a.txt ). Did you use anything else?
You already mentioned the specification ( http://www.w3.org/Graphics/GIF/spec-gif89a.txt ). Did you use anything else?
Extensibility is provided for in the specification, but the actual implementation within each application extension is, of course, application-specific.
The extensions I know about:
- NETSCAPE (animation)
- NETSCAPE (buffering)
- ANIMEXTS (same as Netscape animation)
- GIFCONnb (found this GIF Construction Set extension during testing but didn't try to reverse engineer it)
The only one of consequence is the animation one.
The page I used at the time to describe the animation extension no longer exists, but this page describes it and others: