US 11,930,295 B2
Handling of non-VCL NAL units in picture unit construction
Ye-Kui Wang, San Diego, CA (US)
Assigned to Lemon Inc., Grand Cayman (KY)
Filed by Lemon Inc., Grand Cayman (KY)
Filed on Sep. 16, 2021, as Appl. No. 17/477,221.
Claims priority of provisional application 63/079,933, filed on Sep. 17, 2020.
Prior Publication US 2022/0086431 A1, Mar. 17, 2022
Int. Cl. H04N 7/01 (2006.01); H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/169 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)
CPC H04N 7/01 (2013.01) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/176 (2014.11); H04N 19/188 (2014.11); H04N 19/46 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method of processing visual media data, comprising:
performing a conversion between visual media data and a visual media file that includes one or more tracks that store one or more bitstreams of the visual media data according to a format rule;
wherein the visual media file includes a base track that references one or more subpicture tracks,
wherein the format rule specifies an order of non-VCL (video coding layer) NAL (network abstraction layer) units in a sample of the base track in reconstructing a video unit from the sample of the base track and samples in the one or more subpicture tracks, and
wherein the format rule specifies at least some of the non-VCL NAL units in the sample of the base track to be placed in the video unit before or after NAL units in the one or more subpicture track;
wherein the format rule specifies the order of the non-VCL NAL units regardless of a presence of a picture header NAL unit in the sample.