Gutza wrote:
About still formats, why not use PNG? It does hold some restrictions, depending on your building method (http://www.libpng.org/pub/png/pngfaq.html#patents), but it should be pretty much safe if we can arrange automatically converting whatever format the user uploads to the "proper" (i.e. free) PNG format.
PNG is unsuitable for continuous-tone graphics.
By "unsuitable" I mean its compression isn't much better than BMP.
Timwi