Selective use of adaptive in-loop color-space transform and other video coding tools

An apparatus for processing 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:

• determining, for a conversion between a current video unit of a video and a bitstream of the video, that applicability of a first coding mode and a second coding mode is mutually exclusive, wherein, for an encoding operation, the first coding mode converts visual signals from a first color domain to a second color domain, or for a decoding operation, the first coding mode converts the visual signals from the second color domain to the first color domain;
• and
• performing the conversion based on the determining,
• wherein the second coding mode is an intra subpartition mode in which the current video unit is split into multiple sub-regions that share a same intra mode,
• wherein in case that the first coding mode is enabled for the current video unit, the second coding mode is disabled for the current video unit.

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

• determining, for a conversion between a current video unit of a video and a bitstream of the video, that applicability of a first coding mode and a second coding mode is mutually exclusive, wherein, for an encoding operation, the first coding mode converts visual signals from a first color domain to a second color domain, or for a decoding operation, the first coding mode converts the visual signals from the second color domain to the first color domain;
• and
• performing the conversion based on the determining,
• wherein the second coding mode is an intra subpartition mode in which the current video unit is split into multiple sub-regions that share a same intra mode,
• wherein in case that the first coding mode is enabled for the current video unit, the second coding mode is disabled for the current video unit.

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

• determining, for a current video unit of the video, that applicability of a first coding mode and a second coding mode is mutually exclusive, wherein, for an encoding operation, the first coding mode converts visual signals from a first color domain to a second color domain, or for a decoding operation, the first coding mode converts the visual signals from the second color domain to the first color domain;
• and
• generating the bitstream based on the determining,
• wherein the second coding mode is an intra subpartition mode in which the current video unit is split into multiple sub-regions that share a same intra mode,
• wherein in case that the first coding mode is enabled for the current video unit, the second coding mode is disabled for the current video unit.