Indication and activation of parameter sets for video coding

摘要

In some examples, a video encoder includes multiple sequence parameter set (SPS) IDs in an SEI message, such that multiple active SPSs can be indicated to a video decoder. In some examples, a video decoder activates a video parameter set (VPS) and/or one or more SPSs through referencing an SEI message, e.g., based on the inclusion of the VPS ID and one or more SPS IDs in the SEI message. The SEI message may be, as examples, an active parameter sets SEI message or a buffering period SEI message.

主权项

1. A method of decoding video data, the method comprising:
decoding a bitstream that includes video data and syntax information for decoding the video data, wherein decoding the syntax information comprises decoding an active parameter sets supplemental enhancement information (SEI) message of an access unit, wherein the active parameter sets SEI message indicates a plurality of sequence parameter sets (SPSs) and a video parameter set (VPS) for decoding video data of the access unit, and wherein decoding the active parameter sets SEI message comprises:
decoding a first syntax element that specifies the number of the plurality of SPSs, anddecoding, based on the specified number of the plurality of SPSs, one or more additional syntax elements that comprise respective identifiers for each of the plurality of SPSs; activating the plurality of SPSs and the VPS based on the indication of the plurality of SPSs and the VPS in the active parameter sets SEI message; and decoding the video data of the access unit based on the plurality of activated SPSs and the activated VPS indicated in the active parameter sets SEI message.