I registered both Riva and PIVMooVid (I run a Picasso 4, see sig) years ago. I found them to not overlap and to be very fast.
I never got the same performance out of frogger.
Its a shame that video codecs came and went faster than they could be coded for Amiga. I wish I had a good way to convert modern content back to codecs that play well on Amiga.