Patent ID: 11930175
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 15:
16. A non-transitory computer-readable storage medium storing instructions that cause a processor to:
determine, for a conversion between a video region of a video and a bitstream of the video, whether a first coding tool is allowed or not for a first coding block of the video region, based on a height and a width of the first coding block and a maximum transform size of the video region, wherein in a case where the first coding tool is allowed, the first coding block is split into multiple transform blocks; and
perform the conversion based on the determining,
wherein in response to at least one of the height or the width of the first coding block being greater than the maximum transform size, the first coding tool is not allowed for the first coding block;
wherein a first syntax element denoted by cu_sbt_flag indicating whether the first coding tool is allowed for the first coding block or not is included in a coding unit syntax structure of the bitstream only when:
a) the width of the first coding block denoted by cbWidth is smaller or equal to the maximum transform size; and
b) the height of the first coding block denoted by cbHeight is smaller or equal to the maximum transform size;

wherein for a second coding block of the video region, a second coding tool is disabled in response to at least one of a height or a width of the second coding block being greater than 64, and wherein the second coding tool is an intra block copy (IBC) mode.