PICTURE-IN-PICTURE AND MULTIPLE VIDEO STREAMS USING SLICE-BASED ENCODING

摘要

A head-end centric system and apparatus for encoding and delivery of realtim e and non-realtime content including: a non-realtime content source for providing guide content; a guide encoder (416) for encoding the non-realtime content into encoded non-realtime content; a realtime content source for providing realtime video and audio content; a realtime encoder unit (408) fo r encoding the realtime video and audio content into encoded realtime video an d audio; a remultiplexor for repacketizing the encoded non-realtime content an d the encoded realtime video and audio into transport packets; and a re- timestamp unit coupled to the remultiplexer for providing timestamps to be applied to the transport packets in order to synchronize the realtime and no n- realtime content therein.