How to convert animated GIF into frames, write on it and then restore it as GIF?

[HiDDeN]

Hello everybody,

 

I hope if this topic is written in the suitable forum.

 

Simply, I want to write a script that upload the animated GIF images and write the copyright text of my site on it. I'm using GD library to do that, but the problem is, that the gd library convert the animated gif image into FIXED image after writing. The image lose the animation and become normal gif image.

 

I tried to convert the GIF animation into frames and save every frame in a single image, then write what I want on every individual image and finally recombine the frames again to generete the animation. But the the animation lose the correct (timing), I mean the frames repeated with very high spead and without the original timing.

 

Is there any method to maintain the animation timing or to write on the animated GIF image using GD without split the frames, please tell me.

 

Thanx in advance & I'm waiting from you