Syntax for dependent random access point indication in video bitstreams
AssigneeLemon Inc.
InventorYe-Kui WANG
Life of this patent
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Abstract
Systems, methods and apparatus for encoding, decoding or transcoding visual media data are described. One example method of processing visual media data includes performing a conversion between visual media data and a bitstream of the visual media data according to a format rule, wherein the format rule specifies that a supplemental enhancement information (SEI) message that refers to a dependent random access point (DRAP) picture is included in the bitstream, and wherein the format rule further specifies that the SEI message includes a syntax element indicating a number of intra random access point (IRAP) pictures or dependent random access point (DRAP) pictures that are within a same coded layer video sequence (CLVS) as the DRAP picture.
Claims20
A method of processing visual media data, comprising:
- performing a conversion between visual media data and a bitstream of the visual media data according to a format rule,
- wherein the format rule specifies that a supplemental enhancement information (SEI) message that refers to a dependent random access point (DRAP) picture is included in the bitstream, and
- wherein the format rule further specifies that the SEI message includes a syntax element indicating a number of intra random access point (IRAP) pictures or dependent random access point (DRAP) pictures that are within a same coded layer video sequence (CLVS) as the DRAP picture.
An apparatus for processing visual media data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
- perform a conversion between visual media data and a bitstream of the visual media data according to a format rule,
- wherein the format rule specifies that a supplemental enhancement information (SEI) message that refers to a dependent random access point (DRAP) picture is included in the bitstream, and
- wherein the format rule further specifies that the SEI message includes a syntax element indicating a number of intra random access point (IRAP) pictures or dependent random access point (DRAP) pictures that are within a same coded layer video sequence (CLVS) as the DRAP picture.
A non-transitory computer-readable storage medium storing instructions that cause a processor to:
- perform a conversion between visual media data and a bitstream of the visual media data according to a format rule,
- wherein the format rule specifies that a supplemental enhancement information (SEI) message that refers to a dependent random access point (DRAP) picture is included in the bitstream, and
- wherein the format rule further specifies that the SEI message includes a syntax element indicating a number of intra random access point (IRAP) pictures or dependent random access point (DRAP) pictures that are within a same coded layer video sequence (CLVS) as the DRAP picture.
A non-transitory computer-readable recording medium storing a bitstream of a visual media data which is generated by a method performed by a visual media data processing apparatus, wherein the method comprises:
- determining that a supplemental enhancement information (SEI) message that refers to a dependent random access point (DRAP) picture is included in the bitstream;
- and
- generating the bitstream based on the determining.
Dependencies are inferred from the claim text.