In addition to size (as BrowserUk already noted), you will also need to consider color -- color mapping, color pallet, and color index. Most importantly; the index must be the same for all images used within your animation. else you will not be able to attain a transparent background (if you intend one) and there will be pixelization(sp) which it appears you are describing. Easiest way to discover this info, is probably to open the three images in your image management software (gimp, photoshop, etc...), and look for these factors (compare them). Perhaps there's an "image info(rmation)" in the programs menu? I know the gimp has it, and I can't imagine the others wouldn't. If their not, you should be able to reduce the colors to that of the image with the least colors. There's usually "import" the other images into the one with the lowest color value. Which will "unify" the pallet for all three.

--Chris

Yes. What say about me, is true.

Please update your original node and tell us where Perl comes into this. Then add some code that will run and demonstrate your problem. Once you have done that there are plenty of Monks who will help you with pleasure.

for more guidance see this node: How do I post a question effectively?

Cheers,
R.

I'm making an animated gif with perl and i'm using the gd module. I use the newFromPng method to import images. Then i'm working on an animation that looks like:

use GD;
$img = GD::Image->newFromPng('test1.png');
$img2 = GD::Image->newFromPng('test2.png');
$img3 = GD::Image->newFromPng('test3.png');
$data = $img->gifanimbegin(1,0);
$data.=$img->gifanimadd(0,0,0,1);
$data.=$img2->gifanimadd(0,0,0,1);
$data.=$img3->gifanimadd(0,0,0,1);
$data.=$img->gifanimend;
binmode STDOUT;
print $data;
[download]

I can't provide code to demonstrate my problem.But my problem is that the image colors get mixed up, so the screen starts blinking.

1. Are your 3 images all the same size?
2. What is the logic for adding the same image twice with just 1 x 1/100th of a second delay each?
3. Do you expect to see the animation of 3 images, displayed for 0.02, 0.01 & 0.01 seconds each respectively, to actually visibly move?

---

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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

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In the absence of evidence, opinion is indistinguishable from prejudice.

Have you tried gifanimadd(1,0,0,1)?

It's working. I rebuild one image, this time setting the background pixels explicitely with the setPixel method, and it's fine now. Thank you.