Patent ID: 11863715
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A non-transitory computer-readable storage medium storing instructions that cause a processor to:
perform a conversion between a video comprising a current video unit and a bitstream of the video according to a rule,
wherein the rule specifies that when an adaptive color transform mode and a transform skip mode are enabled for the current video unit and the current video unit is a luma component unit, an input quantization parameter is added to an adaptive color transform offset value equal to −5, and when the input quantization parameter added to −5 is less than a minimal allowed quantization parameter for the transform skip mode, a quantization parameter, which is used in a quantization process or an inverse quantization process, is set equal to the minimal allowed quantization parameter,
wherein the rule specifies that when the adaptive color transform mode is enabled for the current video unit and the transform skip mode is not applied to the current video unit and the current video unit is the luma component unit, the input quantization parameter is added to the adaptive color transform offset value equal to −5, and when the input quantization parameter added to −5 is less than 0, the quantization parameter, which is used in the quantization process or the inverse quantization process, is set equal to 0,
wherein, in the adaptive color transform mode, for an encoding operation, visual signals are converted from a first color domain to a second color domain, or for a decoding operation, the visual signals are converted from the second color domain to the first color domain.