Method, apparatus, and medium for video processing

An apparatus for video 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 acts comprising:

• performing a conversion between a video and a bitstream of the video, wherein at least one neural-network post-processing filter (NNPF) is applied on at least one video unit associated with the video, and the bitstream comprises a first indication indicating whether quality information of the at least one video unit associated with the applying of the at least one NNPF is present in the bitstream.

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

• performing a conversion between a video and a bitstream of the video, wherein at least one neural-network post-processing filter (NNPF) is applied on at least one video unit associated with the video, and the bitstream comprises a first indication indicating whether quality information of the at least one video unit associated with the applying of the at least one NNPF is present in the bitstream.

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

• performing a conversion between the video and the bitstream, wherein at least one neural-network post-processing filter (NNPF) is applied on at least one video unit associated with the video, and the bitstream comprises a first indication indicating whether quality information of the at least one video unit associated with the applying of the at least one NNPF is present in the bitstream.