
Originally Posted by
markaskey
You can do it with Windows Mobile 6.5 but I have not seen anything yet on WP7
here is what I found: (copy pasted text)
Right now, developers for WP7 are at a bit of a disadvantage when it comes to accessing the phone's camera, a key piece of hardware that can give apps a big wow factor. Simply put, they can't use it. Developers are usually provided the necessary tools and documentation for making software for an OS in the form of an SDK, or software development kit, but in this case it appears that Microsoft left out the software hooks necessary to fully control the lens.
So it seems like the camera is unusable for video streaming application. You may have to wait for an update to the WP7 SDK that may enable free use of the camera. For the moment, as that article says, the camera can only be used by the Microsoft applications that come with the WP7.