[Sony Vegas] Angled green screen?

[vegas13]

Hi, I would like to play a regular video file but throught the image of the screen of a laptop that is a angled. The idea is that for example, take this pic:



What I want to do is to play the video where it says "drop image here". So what I would do is just open the image with paint.net and select the screen and delete it so it's transparent, so I don't even need a greenscreen. So what I would need is to angle the video feed, somehow so it matches the angle of the laptop image, so it looks like it's playing the video from the laptop. I not only need to rotate it, it has to match the angle so it has the correct depthness feel.
I hope im being clear with what I want to do. Im using Vegas 13 btw.

[johnmeyer]

Go to the track header for the track that contains your video (i.e., the controls on the left side of the track). Find the Track Motion icon and click on it. In the upper left corner of the Track Motion dialog is a drop-down that defaults to Source/Alpha. Click on that and change it to "3D Source Alpha." (This feature was added way back around Vegas 4. It has nothing to do with the features for editing 3D video that were added later.) As soon as you make this change, you will get three new windows inside that dialog and you can rotate the video along any axis. You can also re-size it and move it so that it fits inside of the laptop screen.

If you want to do more research on this and find tutorials, the search term is "3D Source Alpha."

[edit]Here is a quick example. I did this in Vegas 10. I didn't spend more than 10 seconds doing it, so the video (the NBC logo) doesn't fit perfectly, but if I spent another few minutes, it would in fact be perfect.