Sending progressive video sequences

摘要

In encoding and decoding video signals, a progressive video bitstream (201) is received which has reference frames and non-reference frames, each having an initial temporal reference in accordance with an initial frame sequence structure. The temporal references of only reference frames are remapped (202), by ignoring the non-reference frames. The reference frames are packetized (210-213) with a base packet-identifier (PID) and the non-reference frames with an enhancement PID, to provide base and enhancement transport bitstreams, respectively. <IMAGE>