CPC H04N 19/513 (2014.11) [H04N 19/176 (2014.11); H04N 19/44 (2014.11); H04N 19/56 (2014.11)] | 20 Claims |
1. A method of video processing, comprising:
performing a conversion between a video block and a bitstream of the video block based on at least one of a width and a height of the video block;
refraining from applying, in response to a ratio of the width to the height (W/H) being smaller than a first threshold value, a decoder side motion vector refinement step during the conversion; and
refraining from applying, in response to the ratio of the width to the height (W/H) being greater than a second threshold value, the decoder side motion vector refinement step during the conversion,
wherein W and H are the width and the height of the video block, respectively,
wherein the decoder side motion vector refinement step includes refining a value of a motion vector signaled in the bitstream and using the refined value during the conversion, and
wherein the decoder side motion vector refinement step is applied in a sub-block level.
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