Signaling change in output layer sets
First Claim
Patent Images
1. A method for video decoding, comprising:
- receiving a bitstream comprising a video parameter set and bits representing a current picture;
parsing at least a portion of a slice header of the current picture;
performing a first determination, based on one or more syntax elements in the video parameter set, whether a removal operation from a decoded picture buffer (DPB) is to be performed on a per-picture basis or per-access unit (AU) basis, wherein an access unit comprises at least a base layer and an enhanced layer, and each layer represents a picture;
performing a second determination, separate from the first determination, based on one or more syntax elements in the video parameter set, whether a picture output operation from the DPB is to be performed on a per-picture basis or per-AU basis;
performing the removal operation from the DPB in accordance with the first determination whether the removal operation is to be performed on a per-picture basis or per-AU basis;
performing the picture output operation from the DPB in accordance with the second determination whether the picture output operation is to be performed on a per-picture basis or per-AU basis;
performing a decoding and storing of a current decoded picture in the DPB.
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Abstract
A system for decoding a video bitstream includes receiving a bitstream and a plurality of enhancement bitstreams together with receiving a video parameter set and a video parameter set extension. The system also receives an output layer set change message including information indicating a change in at least one output layer set.
15 Citations
24 Claims
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1. A method for video decoding, comprising:
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receiving a bitstream comprising a video parameter set and bits representing a current picture; parsing at least a portion of a slice header of the current picture; performing a first determination, based on one or more syntax elements in the video parameter set, whether a removal operation from a decoded picture buffer (DPB) is to be performed on a per-picture basis or per-access unit (AU) basis, wherein an access unit comprises at least a base layer and an enhanced layer, and each layer represents a picture; performing a second determination, separate from the first determination, based on one or more syntax elements in the video parameter set, whether a picture output operation from the DPB is to be performed on a per-picture basis or per-AU basis; performing the removal operation from the DPB in accordance with the first determination whether the removal operation is to be performed on a per-picture basis or per-AU basis; performing the picture output operation from the DPB in accordance with the second determination whether the picture output operation is to be performed on a per-picture basis or per-AU basis; performing a decoding and storing of a current decoded picture in the DPB. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic device configured for video coding, comprising:
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a processor; and memory in electronic communication with the processor, wherein instructions stored in the memory are executable to; receive a bitstream comprising a video parameter set and bits representing a current picture, parse at least a portion of a slice header of the current picture, performing a first determination, based on one or more syntax elements in the video parameter set, whether a removal operation from a decoded picture buffer (DPB) is to be performed on a per-picture basis or per-access unit (AU) basis, wherein an access unit comprises at least a base layer and an enhanced layer, and each layer represents a picture, perform a second determination, separate from the first determination, based on the one or more syntax elements in the video parameter set, whether a picture output operation from the DPB is to be performed on a per-picture basis or per-AU basis, perform the removal operation from the DPB in accordance with the first determination whether the removal operation is to be performed on a per-picture basis or per-AU basis, perform the picture output operation from the DPB in accordance with the second determination whether the picture output operation is to be performed on a per-picture basis or per-AU basis, and perform a decoding and storing of a current decoded picture in the DPB. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification