Yes, there are plans (though not without some controversy) to include H.264 and MP3 decoding at least in B2G (Firefox OS), and possibly on other platforms where

Yes, there are plans (though not without some controversy) to include H.264 and MP3 decoding at least in B2G (Firefox OS), and possibly on other platforms where they are available from the OS: https://groups.google.com/d/msg/mozilla.dev.platform/-xTei5rYThU/DkM9AIbkNNIJ https://groups.google.com/d/msg/mozilla.dev.platform/-xTei5r... The patches have already landed in B2G: http://bugzil.la/714408 http://bugzil.la/714408