Systems and methods for applications using channel switch frames

摘要

Techniques for video encoding and decoding a common guide media logic channel (MLC) to enable fast acquisition and re/synchronization of the video stream while preserving compression efficiency are provided. Systems and methods to process multimedia data using channel switch frames are presented. The system comprises an encoder operative to generate a common guide media logical channel (MLC) of a plurality of channel switch frames (CSFs), each respective active channel having one or more CSFs in the guide MLC. The decoder in the system is operative to decode a set of the plurality of CSFs from the guide MLC. The decoder simultaneously displays programming content of the decoded set of the plurality of CSFs on a display and automatically switches to a primary bitstream of an active channel associated with a selected one displayed CSF.

主权项

1. A system comprising:
an encoder operative to generate a common guide media logical channel (MLC) including a plurality of channel switch frames (CSFs), each respective active channel is associated with a respective one or more CSFs and has a different bitstream resolution than the respective one or more CSFs, wherein the MLC includes a separate CSF for direct entry to a stored channel, and wherein the stored channel comprises a broadcast program stored for future playback; and a decoder implemented by a processor and operative to decode a set of the plurality of CSFs, simultaneously display programming content of the decoded set of the plurality of CSFs on a display, acquire and decode a bitstream of the active channel associated with one of the set of the plurality of CSFs in response to a selection of the displayed programming content of the one of the set of the plurality of CSFs.