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Frame Rate Exclusive Sync Management of Live Video Streams in Collaborative Mobile Production Environment

We discuss synchronization problem in an emerging type of multimedia applications, called live mobile collaborative video production systems. The mobile character of the production system allows a director to be present at the site where he/she can see the event directly as well as through the mixer display. In such a situation production of a consistent broadcast is sensitive to delay and asynchrony of video streams in the mixer console. In this paper, we propose an algorithm for this situation called "frame rate exclusive sync manager", which draws on existing reactive source control synchronization techniques. It relies solely on frame-rate control and maintains synchronization between live video streams while ensuring minimal delay by dynamically adapting the frame-rate of the camera feeds based on synchronization offset and network bandwidth health. The algorithm is evaluated by simulation which indicates algorithm's capability of achieving increased synchronization among live streams.