Interaction of Asymmetric Weighted Merges and Other Coding Tools

An apparatus for coding video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:

• construct, for a conversion between a current video block of a video and a bitstream of the video, a merge motion candidate list for the current video block;
• determine a merge candidate from the merge motion candidate list;
• and
• perform the conversion based on the determining,
• wherein at least one coding tool is disabled, when the merge candidate is an asymmetric bi-predictive merge candidate, and
• wherein different weights indicated by the asymmetric bi-predictive merge candidate are applied to a first prediction block and a second prediction block of the current video block to acquire a final prediction block.

A non-transitory computer-readable storage medium storing instructions that cause a processor to:

• construct, for a conversion between a current video block of a video and a bitstream of the video, a merge motion candidate list for the current video block;
• determine a merge candidate from the merge motion candidate list;
• and
• perform the conversion based on the determining,
• wherein at least one coding tool is disabled, when the merge candidate is an asymmetric bi-predictive merge candidate, and
• wherein different weights indicated by the asymmetric bi-predictive merge candidate are applied to a first prediction block and a second prediction block of the current video block to acquire a final prediction block.

A non-transitory computer-readable recording medium storing a bitstream representation which is generated by a method performed by a video processing apparatus, wherein the method comprises:

• constructing, for a conversion between a current video block of a video and a bitstream of the video, a merge motion candidate list for the current video block;
• determining a merge candidate from the merge motion candidate list;
• and
• performing the conversion based on the determining,
• wherein at least one coding tool is disabled, when the merge candidate is an asymmetric bi-predictive merge candidate, and
• wherein different weights indicated by the asymmetric bi-predictive merge candidate are applied to a first prediction block and a second prediction block of the current video block to acquire a final prediction block.