Patent ID: 9226022
Filing Date: 2015-12-29
Classification: H04N

Abstract:
1. A method of switching from a source encoded video stream to a destination encoded video stream in a low bandwidth channel or a high bandwidth channel which has intermittent low bandwidth throughputs where an independent stream is provided to every client and each client may control the switching process without impacting on any other client stream viewing the same source or destination stream, the method comprising the steps of: providing an intermediate switching stream which is dependent upon the destination stream, the switching stream including a plurality of successive GOP (Group of Pictures) sequences, each GOP sequence including an initial I-frame and at least one successive P-frame, wherein successive frames of each GOP sequence of the switching stream and corresponding frames of the destination stream have a progressively decreasing drift error; switching from the source video stream to the I-frame of a GOP sequence of the switching stream; and switching from the switching stream to the destination stream such that the subsequent frames of the destination stream can be decoded using the accumulated reference of the GOP sequence of the switching stream.