Why is it that youtube videos will play on iphone but not any other website video. Is there an application to download to iphone to be able to play more video formats. Is this a resolvable issue? Are there anymore websites other than youtube that will have videos that will play on iphone?
The reason you can't view videos from other videos sites besides youtube is because they run on something called "Flash". iPhones and iPod Touches can't support Flash because of their software. This is why Apple created the YouTube application on your home screen.
Luckily, someone has done there best to fix this problem.
http://www.iskysoft.com/article/play-all-internet-videos-on-ipod-touch.html