I like riva&moovid... I found Frogger too slow... I only have a 060/60 and it's damn slow, it's like watching a slideshow.
I would prefer a Moovid version with the new os, not a slow and unoptimized program like Frogger. There are lot of formats supported but they haven't much use because you can't see a video properly. I bet that the next moovid version is going to be a lot faster (and It will also support Mpg1/2/4).
If you don't have a ppc or x86 Frogger has no use (except slideshows)
Ummm and BTW riva is also a lot faster than frogger. The author should stop adding new formats and start to optimize, because it's a dead slow program.