Systems and methods for signaling profile and level information in video coding
A method of decoding video data comprises: receiving profile tier level syntax; parsing a syntax element, from the profile tier level syntax, indicating a level to which an output layer set conforms, wherein a value of 105 indicates a level where a maximum luma sample rate of 4812963840 samples per second is supported; and performing video decoding based on the indicated level.
1. A method of decoding video data, the method comprising:
receiving profile tier level syntax;
parsing a syntax element, from the profile tier level syntax, indicating a level to which an output layer set conforms,
wherein a value of the syntax element equal to 96 indicates a level 6.0 where a maximum luma sample rate of 1069547520 samples per second is supported;
wherein a value of the syntax element equal to 99 indicates a level 6.1 where a maximum luma sample rate of 2139095040 samples per second, which is 2-times of the maximum luma sample rate of the level 6.0, is supported;
wherein a value of the syntax element equal to 102 indicates a level 6.2 where a maximum luma sample rate of 4278190080 samples per second, which is 2-times of the maximum luma sample rate of the level 6.1, is supported;
wherein a value of the syntax element equal to 105 indicates a level 6.3 where:
a maximum luma picture size of 80216064 luma samples is supported,
a maximum number of slices per access unit is 1000,
a maximum number of tiles per access unit is 990,
a maximum number of tile columns is 30,
a maximum luma sample rate of 4812963840 samples per second, which is 1.125-times of the maximum luma sample rate of the level 6.2, is supported, and a maximum bit rate for a main tier is 320000 bits per second; and
performing video decoding based on the indicated level.
2. The method of claim 1 , wherein performing video decoding based on the indicated level includes setting a decoded picture buffer size.
3. A device comprising one or more processors configured to:
receive profile tier level syntax;
parse a syntax element, from the profile tier level syntax, indicating a level to which an output layer set conforms,
wherein a value of the syntax element equal to 96 indicates a level 6.0 where a maximum luma sample rate of 1069547520 samples per second is supported;
wherein a value of the syntax element equal to 99 indicates a level 6.1 where a maximum luma sample rate of 2139095040 samples per second, which is 2-times of the maximum luma sample rate of the level 6.0, is supported;
wherein a value of the syntax element equal to 102 indicates a level 6.2 where a maximum luma sample rate of 4278190080 samples per second, which is 2-times of the maximum luma sample rate of the level 6.1, is supported;
wherein a value of the syntax element equal to 105 indicates a level 6.3 where:
a maximum luma picture size of 80216064 luma samples is supported,
a maximum number of slices per access unit is 1000,
a maximum number of tiles per access unit is 990,
a maximum number of tile columns is 30,
a maximum luma sample rate of 4812963840 samples per second, which is 1.125-times of the maximum luma sample rate of the level 6.2, is supported, and
a maximum bit rate for a main tier is 320000 bits per second; and
perform video decoding based on the indicated level.
4. The device of claim 3 , wherein the device includes a video decoder.
5. A non-transitory computer-readable storage medium comprising instructions stored thereon that, when executed, cause one or more processors of a device to:
receive profile tier level syntax;
parse a syntax element, from the profile tier level syntax, indicating a level to which an output layer set conforms,
wherein a value of the syntax element equal to 96 indicates a level 6.0 where a maximum luma sample rate of 1069547520 samples per second is supported;
wherein a value of the syntax element equal to 99 indicates a level 6.1 where a maximum luma sample rate of 2139095040 samples per second, which is 2-times of the maximum luma sample rate of the level 6.0, is supported;
wherein a value of the syntax element equal to 102 indicates a level 6.2 where a maximum luma sample rate of 4278190080 samples per second, which is 2-times of the maximum luma sample rate of the level 6.1, is supported;
wherein a value of the syntax element equal to 105 indicates a level 6.3 where:
a maximum luma picture size of 80216064 luma samples is supported,
a maximum number of slices per access unit is 1000,
a maximum number of tiles per access unit is 990,
a maximum number of tile columns is 30,
a maximum luma sample rate of 4812963840 samples per second, which is 1.125-times of the maximum luma sample rate of the level 6.2, is supported, and
a maximum bit rate for a main tier is 320000 bits per second; and
perform video decoding based on the indicated level.
6. The method of claim 1 , wherein performing video decoding based on the indicated level includes parsing a second syntax element specifying a number of subpictures in each picture in a coded layer video sequence, and parsing the second syntax element is based on the value of the second syntax element having a range based on the maximum number of slices per access unit.
7. The device of claim 3 , wherein performing video decoding based on the indicated level includes parsing a second syntax element specifying a number of subpictures in each picture in a coded layer video sequence, wherein parsing the second syntax element is based on the value of the second syntax element having a range based on the maximum number of slices per access unit.
8. The non-transitory computer-readable storage medium of claim 5 , wherein performing video decoding based on the indicated level includes parsing a second syntax element specifying a number of subpictures in each picture in a coded layer video sequence, wherein parsing the second syntax element is based on the value of the second syntax element having a range based on the maximum number of slices per access unit.