On Mon, Jun 10, 2013 at 5:35 PM, Ameet <[email protected]> wrote:
> Using the WMS Animator service, I am giving aparam=layers and a total of 56
> layers in the avalues.
>
> This is returning a single 6.8 MB animated gif and takes time to display in
> browser. This image is 24-bit gif.
>
> How can I request a lower resolution image from this service (I want only
> 16-bit colors, infact 8-bit will also be fine).
>
All GIFs are paletted images, so there is a table linking a integer number
between
0 and 255 to a color, and then all the pixels refer to indexes in that
table.
So, reducing the color size from 24 to 16 bits is just going to save you:
1 (saved byte) * 255 (entries in the table) * 56 (number of images) = 14KB
more or less
So you're not going to get any significant saving by trying to go that way.
I believe the only thing you can control is the image size in pixels, and
the number
of frames in the animation, if you cannot reduce neither of these I believe
you'll
have to just accept the current file size.
Cheers
Andrea
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