Video coding system with temporal layers and method of operation thereof
A method of operation of a video coding system includes: receiving a video bitstream; extracting a video syntax from the video bitstream; extracting a temporal layer from the video bitstream based on the video syntax; and forming a video stream based on the temporal layer for displaying on a device.
1. A decoding method for operation in a video coding system, the decoding method comprising:
extracting, from an encoding bitstream, a video usability information (VUI) parameter including field_seq_flag, wherein
the field_seq_flag indicates whether a video stream includes a video representing field,
the VUI parameter is common to a plurality of occurrences of a temporal layer, and
the VUI parameter is constant for the plurality of occurrences of the temporal layer;
extracting the temporal layer from the encoding bitstream based on the extracted VUI parameter; and
decoding the encoding bitstream based on the extracted temporal layer to generate the video stream.
2. The decoding method of claim 1 , wherein the VUI parameter further includes a timing_info_present_flag.
3. The decoding method of claim 2 , wherein a plurality of VUI parameters related to the timing_info_present_flag is common to the plurality of occurrences of the temporal layer.
4. The decoding method of claim 1 , further comprising extracting a hypothetical reference decoder (HRD) parameter common to the plurality of occurrences of the temporal layer, from the encoding bitstream.
5. The decoding method of claim 1 , further comprising extracting a hypothetical reference decoder (HRD) parameter for each separate occurrence of the temporal layer, from the encoding bitstream.
6. A decoding apparatus for operation in a video coding system, the decoding apparatus comprising:
circuitry configured to:
extract, from an encoding bitstream, a video usability information (VUI) parameter including field_seq_flag, wherein
the field_seq_flag indicates whether a video stream includes a video representing field,
the VUI parameter is common to a plurality of occurrences of a temporal layer, and
the VUI parameter is constant for the plurality of occurrences of the temporal layer;
extract the temporal layer from the encoding bitstream based on the extracted VUI parameter; and
decode the encoding bitstream based on the extracted temporal layer to generate the video stream.
7. The decoding apparatus of claim 6 , wherein the VUI parameter further includes a timing_info_present_flag.
8. The decoding apparatus of claim 7 , wherein a plurality of VUI parameters related to the timing_info_present_flag is common to the plurality of occurrences of the temporal layer.
9. The decoding apparatus of claim 6 , wherein the circuitry is further configured to extract a hypothetical reference decoder (HRD) parameter common to the plurality of occurrences of the temporal layer from the encoding bitstream.
10. The decoding apparatus of claim 6 , wherein the circuitry is further configured to extract a hypothetical reference decoder (HRD) parameter for each separate occurrence of the temporal layer from the encoding bitstream.