Patent ID: 11930176
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of processing video data, comprising:
determining, for a conversion between a current video block of a video and a bitstream of the video, whether an indication of a transform type in a multiple transform selection operation is included in the bitstream at least based on whether the current video block is coded using an intra block copy mode; and
performing the conversion based on the determining,
wherein the multiple transform selection operation comprises using a transform from a plurality of predefined transform candidates during the conversion,
wherein, in case that the current video block is coded using the intra block copy mode, the indication is excluded from the bitstream,
wherein, whether the indication is included in the bitstream is further based on a position of a last non-zero coefficient of the current video block,
wherein, whether to implicitly apply the multiple transform selection operation is based on whether the current video block is coded with a matrix-based intra prediction mode,
wherein, whether the indication of the transform type in the multiple transform selection operation is included in the bitstream is at least based on a tree type of the current video block, and
wherein, in response to the current video block being a chroma component that is partitioned using a dual tree from a coding tree unit, the indication is excluded from the bitstream, and when the indication is excluded from the bitstream, a value of the indication is inferred to be equal to a default value.