I was interested what I can find between differences in VC-1 (user for HD in Silverlight) and H.264 (used for HD in Flash) video standards
I like H.264 personally, being a standard in HD video on discs (Blu-ray and HD-DVD).
Today I watched new Adobe HD video showcase site… It looks great surely, loading times are acceptable, I can easily say very good…
Only one thing Flash Video is suffering I think is performance on slower CPUs, hopefully Flash player will soon get much faster as more hardware is included in processing. Anyway this is all great, HD is much more interesting then DivX-like quality videos!
Thanks to the reply from John Dowdell from Adobe I am posting updated page on recommended requirements for smooth HD playback in Flash Player