Hi When making a simple app displaying animated GIFs I noticed many images did not look like they should when using PIL to load them. As I had nothing better to do I started to try to figure out what was wrong. I ended up making an own pure-python GIF-loader, which worked just like it should (like firefox), but was quite slow. GIF is an interesting format.
The good thing was that I now understood how GIF-files worked, more or less, and I managed to patch PIL to work the same way. The problems had to do with palettes and transparency in animations. The patch is attached. I don't know if I've done everything as it should be done, but it works for all images I've tested. I haven't tested saving GIFs with it, but there should be no difference I think. / Sam Persson
gif-patch.diff
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