Drag one of the ASPNetVideo controls from the toolbox onto your ASPX
web form in design mode.
Change the VideoURL property to point
to a video file. This is normally a video file which you have already added
to you ASP.Net web application in the Solution Explorer. It may also
be the URL of a remote video stream.
There are many video formats, and you can now support
almost all of them. To start with try:
- .mov files for
QuickTime Player
- .ram & .rmv for RealPlayer
- .wmv &
.avi files for Windows Media
Player
The Video File will now be rendered into your web
page.

For detailed information of configuring ASPNetVideo, please refer to: