Association of operation point info properties to VVC image items
Systems, methods and apparatus for processing image data are described. One example method includes performing a conversion between a visual media file and a bitstream. The visual media file comprises image items each comprising a sequence of one or more pictures according to a media file format, and the bitstream includes access units each consisting of one or more pictures each belonging to a layer according to a video coding format. The media file format specifies that image items comprising pictures originated from the bitstream are allowed to be associated with different instances of a property descriptor that indicates high-level characteristics of the bitstream.
1. A method for processing image data, comprising:
performing a conversion between a visual media file and a bitstream, wherein the visual media file comprises image items each comprising a sequence of one or more pictures according to a media file format, wherein the bitstream includes access units each consisting of one or more pictures each belonging to a layer according to a video coding format, and
wherein the media file format specifies that image items comprising pictures originated from the bitstream are allowed to be associated with different instances of a property descriptor that indicates high-level characteristics of the bitstream;
wherein the media file format further specifies that, in response to a record of operating points being included in the property descriptor of the operating points that indicates the high-level characteristics of the bitstream, at least one of a value of a first syntax element in the record or a value of a second syntax element in the record is constrained to be a predetermined value, and
wherein the first syntax element specifies a maximum temporal identification associated with an i-th profile tier level syntax structure, i being in a range of 0 to (a number of profile tier levels −1), and wherein the second syntax element specifies a maximum temporal identification associated with the record of the operating points.
2. The method of claim 1 , wherein the video coding format corresponds to a Versatile Video Coding standard according to ISO/IEC 23090-3.
3. The method of claim 1 , wherein the property descriptor is represented as VvcOperatingPointsInformationProperty.
4. The method of claim 1 , wherein the first syntax element is represented as ptl_max_temporal_id[i], and wherein the second syntax element is represented as max_temproal_id.
5. The method of claim 1 , wherein the predetermined value is equal to 0.
6. The method of claim 1 , wherein the conversion includes encoding the visual media file into the bitstream.
7. The method of claim 1 , wherein the conversion includes decoding the visual media file from the bitstream.
8. An apparatus for processing visual media file 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 a visual media file and a bitstream, wherein the visual media file comprises image items each comprising a sequence of one or more pictures according to a media file format, wherein the bitstream includes access units each consisting of one or more pictures each belonging to a layer according to a video coding format, and
wherein the media file format specifies that images items comprising pictures originate from the bitstream are allowed to be associated with different instances of a property descriptor that indicates high-level characteristics of the bitstream;
wherein the media file format further specifies that, in response to a record of operating points being included in the property descriptor of the operating points that indicates the high-level characteristics of the bitstream, at least one of a value of a first syntax element in the record or a value of a second syntax element in the record is constrained to be a predetermined value, and
wherein the first syntax element specifies a maximum temporal identification associated with an i-th profile tier level syntax structure, i being in a range of 0 to (a number of profile tier levels −1), and wherein the second syntax element specifies a maximum temporal identification associated with the record of the operating points.
9. The apparatus of claim 8 , wherein the video coding format corresponds to a Versatile Video Coding standard according to ISO/IEC 23090-3.
10. The apparatus of claim 8 , wherein the property descriptor is represented as VvcOperatingPointsInformationProperty.
11. The apparatus of claim 8 , wherein the first syntax element is represented as ptl_max_temporal_id[i], and wherein the second syntax element is represented as max_temproal_id.
12. The apparatus of claim 8 , wherein the predetermined value is equal to 0.
13. A non-transitory computer-readable storage medium storing instructions that cause a processor to:
perform a conversion between a visual media file and a bitstream, wherein the visual media file comprises image items each comprising a sequence of one or more pictures according to a media file format, wherein the bitstream includes access units each consisting of one or more pictures each belonging to a layer according to a video coding format, and
wherein the media file format specifies that image items comprising pictures originated from the bitstream are allowed to be associated with different instances of a property descriptor that indicates high-level characteristics of the bitstream;
wherein the media file format further specifies that, in response to a record of operating points being included in the property descriptor of the operating points that indicates the high-level characteristics of the bitstream, at least one of a value of a first syntax element in the record or a value of a second syntax element in the record is constrained to be a predetermined value, and wherein the first syntax element specifies a maximum temporal identification associated with an i-th profile tier level syntax structure, i being in a range of 0 to (a number of profile tier levels −1), and wherein the second syntax element specifies a maximum temporal identification associated with the record of the operating points.
14. The non-transitory computer-readable storage medium of claim 13 , wherein the video coding format corresponds to a Versatile Video Coding standard according to ISO/IEC 23090-3, and wherein the property descriptor is represented as VvcOperatingPointsInformationProperty.
15. A non-transitory computer-readable recording medium storing a bitstream comprising image items which is generated by a method performed by a video processing apparatus, wherein the method comprises:
generating a bitstream from a visual media file,
wherein the visual media file comprises image items each comprising a sequence of one or more pictures according to a media file format, and wherein the bitstream includes access units each consisting of one or more pictures each belonging to a layer according to a video coding format, and
wherein the media file format specifies that image items comprising pictures originated from the bitstream are allowed to be associated with different instances of a property descriptor that indicates high-level characteristics of the bitstream;
wherein the media file format further specifies that, in response to a record of operating points being included in the property descriptor of the operating points that indicates the high-level characteristics of the bitstream, at least one of a value of a first syntax element in the record or a value of a second syntax element in the record is constrained to be a predetermined value, and
wherein the first syntax element specifies a maximum temporal identification associated with an i-th profile tier level syntax structure, i being in a range of 0 to (a number of profile tier levels −1), and wherein the second syntax element specifies a maximum temporal identification associated with the record of the operating points.
16. The non-transitory computer-readable storage medium of claim 13 , wherein the first syntax element is represented as ptl_max_temporal_id[i], and wherein the second syntax element is represented as max_temproal_id.
17. The non-transitory computer-readable storage medium of claim 13 , wherein the predetermined value is equal to 0.
18. The non-transitory computer-readable recording medium of claim 15 , wherein the video coding format corresponds to a Versatile Video Coding standard according to ISO/IEC 23090-3.
19. The non-transitory computer-readable recording medium of claim 15 , The method of claim 1 , wherein the property descriptor is represented as VvcOperatingPointsInformationProperty.
20. The non-transitory computer-readable recording medium of claim 15 , wherein the first syntax element is represented as ptl_max_temporal_id[i], and wherein the second syntax element is represented as max_temproal_id.