Do Videos on the Web on Android Devices play inline or in an video app?

I want to find out wether Videos on Mobile Websites play inline or in a video application. If they play in an video application: are these applications device specific or is it always the same? Does someone have a link to the lo开发者_Go百科ok of the controls so that I can build a photoshop preview on how my web video will look on Android?

EDIT

By inline, I mean that it does not play in an external app like it does on the iphone (opens quicktime player whenever you click a video on m.youtube.com) but that it just plays inside the browser.

HTML5 video tag supported on some androids see HTML5 <video> element on Android