Procedure and device for decoding multi-layer video data by determining decoder capacity based on the profile, grade and level associated with the partition containing one or more layers

摘要

A method of decoding multi-layer video data, the method comprising: decoding a bit stream comprising an encoded representation of multi-layer video data, in which decoding the bit stream comprises obtaining, from the stream bits, syntactic elements indicating a plurality of different partition schemes, in which: multi-layer video data comprises a plurality of layers; the network access layer (NAL) units of the bit stream having different layer identifiers belong to different layers of the plurality of layers, and for each respective partition scheme of the plurality of partition schemes, the scheme of respective partition specifies a respective set of disjoint partitions whose union forms a set of output layers, in which each respective partition of the respective set of disjoint partitions contains one or more of the layers; determine if a multi-layer video decoder is capable of decoding the set of output layers, in which the multi-layer video decoder conforms to a triple input list, each respective triple input in the triple input list indicates a profile, a degree and a level for a respective single layer decoder of the multi-layer video decoder, and decoders that conform to the triple input list are required to be able to decode the set of output layers if the plurality of schemes Partition includes a suitable partition scheme in which, for each respective partition of the partition scheme, the profile, grade and level information indicated for that respective partition indicates that a single layer decoder of the multi-layer video decoder can be assigned exclusively to decode the respective partition; and based on the multi-layer video decoder that is capable of decoding the bit stream, decoding, through the multi-layer video decoder, the bit stream.