metadata events synchronized with live video stream

Jul 13, 2011 at 2:55 PM

I would like to get live video stream with some real-time events synchronized with it. For example I would like to have a possibility to unlock a button, after something on the screen happenened - when something happens in front of the camera, there should be send some info about it (i.e. cameraman is pushing special button). The quest is to have this info (or event) synchronized with situation on the screen.

I need to get functionality very similar to this one: offered by flash, but on .NET platform.

I assume that Markers could be useful, but can I use them in live video mode?