Rendering images containing video

摘要

A video node for use in rendering one or more video frames of a video stream. The video node is represented by a compositing tree ( 2100 ). The compositing tree ( 2100 ) comprises at least one image primitive node ( 2140 ) representing one or more video frames ( 2300 ) of the video stream. At least one of the video frames ( 2300 ) represented by the image primitive node ( 2140 ) is composited with at least one further graphical primitive represented by at least one further primitive node ( 2130 ) of the compositing tree ( 2100 ). The video frame ( 2300 ) is composited with the further graphical primitive according to a compositing operation represented by an operation node of the compositing tree ( 2100 ) in order to generate a composite image ( 2303 ) represented by at least one composite node ( 2150 ) of the compositing tree ( 2100 ).