Encoder does not prevent PNG Alpha

[martenzander]

When using gifencoder in combination with a png-file-stream it sets transparent pixels back to a default black color. Since my pngs do contain black color I cannot just simply use the setTransparent() method to remove black. This would destroy my image.

Any ideas on how to prevent the pngs alpha channel?

[gustavoiha]

I'm eager to make transparent gifs as well