peroo

It's far more interesting to know what kind of level [1] the decoder supports. I'd guess it tops out at 4, though one might have hoped for full 1080p60 playback.

[1] http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Levels

I wouldn't really call transitions behavior considering that they don't change the state of the page, and degrade gracefully.

Now, CSS3 animations might be a different kettle of fish entirely, I haven't looked too closely at them.