[Coco] . Gif

[L. Curtis Boyle]

I can’t remember if this is the exact same document I used to add animated GIF support to Tim Kientzle’s VIEW utility (when I did the 6309 based 4.5a Beta version way back), but it looks vaguely familiar. If you look at the 89A spec, it specifically mentions that it is not “intended for animation”, although it can do it in a “limited way”. The Netscape extension added the full support.

http://www.vurdalakov.net/misc/gif/netscape-looping-application-extension

L. Curtis Boyle
curtisboyle at sasktel.net



> On Mar 24, 2022, at 8:24 AM, RETRO Innovations <go4retro at go4retro.com> wrote:
> 
> On 3/24/2022 8:58 AM, L. Curtis Boyle wrote:
>>  Animated GIF’s we’re extensions to GIF added by Netscape; while the original 1987 GIF spec from Compuserve did support
>> multiple rectangular areas to draw in, it didn’t have the special headers that defined timings between each area being drawn, whether the animation went on forever or stopped. etc.
> 
> Is there a source to cite for Netscape's contribution?  Animated GIFs were format 89a, whereas the original was 87a. 89a included timing information and such and predates (1989 versus 1993) work on Netscape.
> 
> https://www.prepressure.com/library/file-formats/gif
> 
> Jim
> 
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