Roc just gave a go-ahead to initial SMIL patch developed by Brian Britles and maintained by Tim Rowley.
It’s not yet a full success, since this patch doesn’t make Gecko 100% compatible, but it’s a great starter and it dramatically increases the amount of SMIL that Gecko understands 🙂 I remember like one year ago I was using my private builds with SMIL support based on this patch and it worked pretty well – I was able to test most of the testcases I could find.
Go Gecko! 🙂