Patent ID: 11924413
Assignee: MEDIATEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A video coding method comprising:
receiving data to be encoded or decoded as a current block of a current picture of a video,
generating a first prediction of the current block based on a first inter prediction mode;
determining a block size of the current block according to a width, a height, or both of the current block;
performing:
disabling a combined prediction mode with a selection for the current block responsive to the width or the height of the current block being greater than a threshold length; or
enabling the combined prediction mode with the selection for the current block responsive to the width and the height of the current block being not greater than a threshold length; and

when the combined prediction mode is enabled:
generating a second prediction of the current block based on an intra prediction mode or the second inter prediction mode depending on the selection;

generating a combined prediction for the current block based on the first prediction, the second prediction thereof, and a combined-weight setting; and
using the combined prediction to reconstruct the current block or to encode the current block into a bitstream,

wherein:
the first and second inter prediction modes are selected from a first candidate list having one or more inter prediction candidates, the first candidate list corresponding to a merging candidate list that includes at least one history-based merging candidate selected from a history-based motion vector predictor (HMVP) candidate list,
the intra prediction mode is inferred as a planar mode without parsing a syntax to indicate the intra prediction mode,
the first and second inter prediction modes are skip or merge and the merging candidate list is without subblock merging candidates,
the selection is explicitly indicated by a flag signaled/parsed for the current block to determine to use the intra prediction mode to generate the second prediction or to use the second inter prediction mode to generate the second prediction, and
in response of using the intra prediction mode to generate the second prediction, the combined-weight setting refers to selecting weights for the first prediction and the second prediction from multiple pre-defined weights comprising equal weights for the first prediction and the second prediction.