If a web video plays okay on my iPhone/iPad, can I assume it will play on aTV Flash (ATV2) too?


I'd like to make sure that I will be able to watch my favorite video sites on the big screen. Currently I'm watching them either on my iPhone (through Safari, maybe it's HTML5, but I'm not sure) or on my windows PC (Adobe flash). Initially I hoped that Airplay would enable me to watch them on ATV2, but it does not seem to be the case, yet. So I really hope that aTV Flash ( Couch surfer, or anything.. ) can play them directly from the web. 



So my question is, can I assume aTV flash can play it as long as iPhone Safari can play it? I think it's a reasonable expectation, as both run on iOS and no Adobe Flash.



More specifically, can someone check whether aTV flash can play the video in the following URL?