In standard Flash only one Video object can receive data from a NetStream object at a time. Scaleform removes this limitation and allows for the multiple Video objects to be attached to the same NetStream object and receive the same video data.
clipRect property
clipRect: flash.geom.Rectangle [read-write]
Scaleform version: 3.0.70
This property allows a video object to display only a part (region) of the original video frame.
Example:
video.clipRect = new flash.geom.Rectangle(10, 20, 100, 100);