Method, apparatus, and medium for visual data processing

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

• performing a conversion between visual data and a bitstream of the visual data with a neural network (NN)-based model,
• wherein a first format for coding the visual data and a second format of output visual data from the conversion are indicated with different indications, the first format indicates a first relationship between a size of a first component of the coded visual data and a size of a second component of the coded visual data, and the second format indicates a second relationship between a size of a first component of the output visual data and a size of a second component of the output visual data.

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

• performing a conversion between visual data and a bitstream of the visual data with a neural network (NN)-based model,
• wherein a first format for coding the visual data and a second format of output visual data from the conversion are indicated with different indications, the first format indicates a first relationship between a size of a first component of the coded visual data and a size of a second component of the coded visual data, and the second format indicates a second relationship between a size of a first component of the output visual data and a size of a second component of the output visual data.