SYSTEM AND METHOD FOR COMBINING MULTIPLE VIDEO STREAMS

摘要

An operation for combining multiple video streams permits combining any number of overlay images and base images regardless of processes performed upon one or more of the images. Specifically, where the base images are dynamically sized and resized to provide a constant frame rate, despite varying frame complexity, the process similarly treats overlay images and even other base images. In the dynamic sizing process, a rendering time is compared (604) to high and low water marks (606, 612). During dynamic resizing, two double buffering operations and a synchronization operation are performed. After dynamic sizing and resizing, the resulting resized images are combined together, regardless of the frame rate of the individual images. Consequently, multiple video streams at varying frame rates are combined at a constant frame rate.