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Would like to learn the details of animated graphic file formats, such as GIFs

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Ramon F Herrera

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Jun 8, 2009, 7:24:02 PM6/8/09
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My question is about animated GIFs, so let's start with this:

- Are there "animated PNGs", "animated JPEGs", or TIFFs, or animated
anything else?

Notice that I am not talking about programming technologies such as
flash, etc.

The specific project that I have is a demo program that processes some
stages and when it is done with each, it places either a green check
mark or a red X (with obvious meaning) next to the individual items.

I simply sent a green check mark and a red X to the programmer, would
like the demo to look spiffier. Now I would like to see the check mark
being drawn, i.e., animated. I don't suppose the programmer has to be
concerned or involved, right? I should simply send him an animated
file and tell him: "here is the new green check mark".

What about the repetitive cycle? Is there some internal flag in
animated GIFs (or animated anything) that says: "you should cycle
forever" or "one cycle, and then you stop" (this is my preferred
behavior for this application).

Should I forget about animated GIFs and use something else?

Your answers and comments are most welcome.

TIA,

-Ramon

Andrew Morton

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Jun 9, 2009, 3:53:40 AM6/9/09
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Ramon F Herrera wrote:
> My question is about animated GIFs, so let's start with this:
>
> - Are there "animated PNGs", "animated JPEGs", or TIFFs, or animated
> anything else?

No, no, no, yes.

> I simply sent a green check mark and a red X to the programmer, would
> like the demo to look spiffier. Now I would like to see the check mark
> being drawn, i.e., animated. I don't suppose the programmer has to be
> concerned or involved, right? I should simply send him an animated
> file and tell him: "here is the new green check mark".

Yes.

> ... Is there some internal flag in


> animated GIFs (or animated anything) that says: "you should cycle
> forever" or "one cycle, and then you stop" (this is my preferred
> behavior for this application).

Yes and yes: your choice.

Andrew


John Stafford

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Jun 9, 2009, 11:47:47 AM6/9/09
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On 6/9/09 2:53 AM, in article 796io8F...@mid.individual.net, "Andrew
Morton" <a...@in-press.co.uk.invalid> wrote:

> Ramon F Herrera wrote:
>> My question is about animated GIFs, so let's start with this:
>>
>> - Are there "animated PNGs", "animated JPEGs", or TIFFs, or animated
>> anything else?
>
> No, no, no, yes.

There is an animated PNG, however it is unoffical. See APNG.
http://animatedpng.com/

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