How to set the movie as a background?

To set movie as a background in VideoMixer you need to configure the scene to place the background stream to be played behind the foreground. You can test it with Vision Mixer C# sample. Here is a sequence of actions:

• Run the Vision Mixer C# sample.
• Create new project.
• Add two streams: background and foreground. It can be files, live streams or pictures.

• Press "Apply". Now you have 2 streams but if you'll choose one of them it will be played separately. Let's ceate a csene where this streams will be placed one above another.
• Select a "SIDE" scene in a scene list - we will modify it to create our scene. You see that you have both of your streams on the preview screen side-by-side. Now le's place them one above another.

• Choose the first rect in a rect list and press "Change rect" button.
• You see that Target Rectangle takes only a half of the output screen. Configure it for it took all the screen area (for example 720x576) and close the configuration window.

• Do the same with the second rect in a list.
• Here it is - you have one stream above another! Save this scene ("Add scene" button) to pass the configuration stage next time.

• Now you can configure the chroma key for the foreground stream (http://wiki.medialooks.com/How_can_I_test_your_chroma_key%3F). You will have a chromakeyed stream on a movie background.