| CPC H04N 19/59 (2014.11) [H04N 19/105 (2014.11); H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/40 (2014.11); H04N 19/70 (2014.11)] | 20 Claims |
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1. A method for video processing, comprising:
determining, for a conversion between a chroma block of a video and a bitstream of the video, whether to apply a first prediction mode on the chroma block based on a group of conditions;
generating prediction samples for the chroma block based on the determining; and
performing the conversion between the chroma block and the bitstream,
wherein in a case where the first prediction mode is applied on the chroma block, a matrix vector multiplication operation is applied,
wherein the first prediction mode is applied on the chroma block in response to the group of conditions being satisfied,
wherein the first prediction mode is applied on a luma block corresponding to the chroma block,
wherein an intra mode is applied to a second block of the video which is a neighboring block of the luma block, and a candidate list is constructed to derive a prediction mode for the second block, and
wherein when the luma block is added to the candidate list as a candidate, the luma block is treated as having a planar mode.
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