&#62; They do not have a license to use h264, and even if they did, they could not afford to share it with you. Distributing patent-encumbered GPL code violates the spirit of GPL-2 and the letter of GPL-3.<p>Mozilla wouldn't need to distribute h264 decoder. It should allow using 3rd party decoders, either by using system APIs (GStreamer, DirectShow etc) or exposing somekind of plugin interface.<p>&#62; As they say: Patches Welcome.<p>Patches haven't been welcome.