Individual buffer management in transport of scalable video
First Claim
1. A method of decoding a transport stream including a high efficiency video coding (HEVC) layered stream having a plurality of HEVC temporal layers included in one or more elementary streams, the method comprising:
- receiving an HEVC video descriptor including one or more syntax elements in the HEVC video descriptor that apply to the whole HEVC layered stream;
determining from the HEVC video descriptor one or more elements that indicate whether the plurality of HEVC temporal layers are present in one or more spatial layers in the HEVC layered stream;
receiving at least one extension descriptor that extends the HEVC video descriptor for each of the plurality of HEVC temporal layers present in the HEVC layered stream;
determining from the at least one extension descriptor that individual layer parameters for each of the plurality of HEVC temporal layers in the HEVC layered stream are present; and
decoding each layer of the HEVC layered stream according to individual layer parameters signaled, wherein buffering for a decoding process includes;
determining buffer parameter settings for buffering each of the plurality of HEVC temporal layers in the transport stream, wherein each of the plurality of HEVC temporal layers includes a respective buffer parameter setting;
providing respective HEVC temporal layers to individual transport stream buffers for buffering each of the respective HEVC temporal layers in the one or more spatial layers in the HEVC layered stream;
buffering the plurality of HEVC temporal layers in the individual transport stream buffers according to the respective buffer parameter settings.
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Abstract
A method is provided to determine buffer parameter settings for a plurality of layers in a transport stream. Each layer includes a respective transport stream buffer parameter setting. Then, the method provides respective transport stream buffer parameter settings to individual transport stream buffers for respective layers in the plurality of layers. Then, the method buffers the respective layers in the individual transport stream buffers according to the respective transport stream buffer parameter settings. After buffering, the method combines the respective layers to form a combined bit stream.
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Citations
20 Claims
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1. A method of decoding a transport stream including a high efficiency video coding (HEVC) layered stream having a plurality of HEVC temporal layers included in one or more elementary streams, the method comprising:
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receiving an HEVC video descriptor including one or more syntax elements in the HEVC video descriptor that apply to the whole HEVC layered stream; determining from the HEVC video descriptor one or more elements that indicate whether the plurality of HEVC temporal layers are present in one or more spatial layers in the HEVC layered stream; receiving at least one extension descriptor that extends the HEVC video descriptor for each of the plurality of HEVC temporal layers present in the HEVC layered stream; determining from the at least one extension descriptor that individual layer parameters for each of the plurality of HEVC temporal layers in the HEVC layered stream are present; and decoding each layer of the HEVC layered stream according to individual layer parameters signaled, wherein buffering for a decoding process includes; determining buffer parameter settings for buffering each of the plurality of HEVC temporal layers in the transport stream, wherein each of the plurality of HEVC temporal layers includes a respective buffer parameter setting; providing respective HEVC temporal layers to individual transport stream buffers for buffering each of the respective HEVC temporal layers in the one or more spatial layers in the HEVC layered stream; buffering the plurality of HEVC temporal layers in the individual transport stream buffers according to the respective buffer parameter settings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising:
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one or more computer processors; and a computer readable storage medium comprising instructions that, when executed, cause the one or more computer processors to; receive a high efficiency video coding (HEVC) video descriptor including one or more syntax elements in the HEVC video descriptor that apply to the whole HEVC layered stream; determine from the HEVC video descriptor one or more elements that indicate whether a plurality of HEVC temporal layers are present in one or more spatial layers in the HEVC layered stream; receive at least one extension descriptor that extends the HEVC video descriptor for each of the plurality of HEVC temporal layers present in the HEVC layered stream; determine from the at least one extension descriptor that individual layer parameters for each of the plurality of HEVC temporal layers in the HEVC layered stream are present; and decode each layer of the HEVC layered stream according to individual layer parameters signaled, wherein buffering for a decoding process includes; determining buffer parameter settings for buffering each of the plurality of HEVC temporal layers in the transport stream, wherein each of the plurality of HEVC temporal layers includes a respective buffer parameter setting; sending respective buffer parameter settings to individual transport stream buffers for buffering each of the respective HEVC temporal layers in the one or more spatial layers in the HEVC layered stream. - View Dependent Claims (14, 15, 16)
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17. An apparatus comprising:
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one or more computer processors; and a computer readable storage medium comprising instructions that, when executed, cause the one or more computer processors to; receive a high efficiency video coding (HEVC) video descriptor including one or more syntax elements in the HEVC video descriptor that apply to the whole HEVC layered stream; determine from the HEVC video descriptor one or more elements that indicate whether a plurality of HEVC temporal layers are present in one or more spatial layers in the HEVC layered stream; receive at least one extension descriptor that extends the HEVC video descriptor for each of the plurality of HEVC temporal layers present in the HEVC layered stream; determine from the at least one extension descriptor that individual layer parameters for each of the plurality of HEVC temporal layers in the HEVC layered stream are present; decode each layer of the HEVC layered stream according to individual layer parameters signaled, wherein buffering for a decoding process includes; determining buffer parameter settings for buffering each of the plurality of HEVC temporal layers in the transport stream, wherein each of the plurality of HEVC temporal layers includes a respective buffer parameter setting; applying respective buffer parameter settings to individual buffers for respective HEVC temporal layers in the one or more spatial layers in the HEVC layered stream. - View Dependent Claims (18, 19, 20)
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Specification