System and method for providing and using predetermined signaling of interoperability points for transcoded media streams

摘要

A system and method for identifying when an indicated or predetermined media transcoding process results in a media stream that is compliant with an indicated interoperability point. Various embodiments allow for the encoding, storage, transcoding, and transmission of a media stream, for which a transcoding process is identified and the resulting media stream of the transcoding process is associated with at least one property. The signaling of the property or properties, and an identification of the transcoding process in one embodiment, may be included in the media bitstream, in a file format container containing the media bitstream, or in a transmission or control protocol for transmission or control of the media bitstream.

主权项

1. A method, comprising:
encoding a video sequence into a scalable encoded bitstream comprising a plurality of layers, the scalable encoded bitstream comprising network abstraction layer (NAL) units, each NAL unit comprising a NAL unit header and a NAL unit payload; and providing a signaling corresponding to a scalable layer of the plurality of layers, the signaling including information identifying a transcoding process and a coding property, wherein the transcoding process, when applied to the scalable layer after encoding, modifies the NAL unit headers of the NAL units associated with the scalable layer, discards the NAL units associated with other scalable layers, and results in a non-scalable transcoded media stream, and wherein the coding property characterizes the transcoded media stream and comprises at least one of a coding format, a profile of a standard, a level of a standard, a hypothetical reference decoder parameter, and a video buffer verifier parameter.