Video encoding and decoding method, apparatus and system

A decoder, comprising:

• one or more processors;
• one or more memories;
• and
• one or more programs, wherein the one or more programs are stored in the one or more memories, and in addition, the one or more programs are configured to be executed by the one or more processors, and the one or more programs comprise:
• an instruction, configured to receive a video bitstream, wherein the video bitstream comprises a to-be-decoded video and supplemental enhancement information (SEI) the to-be-decoded video comprises a to-be-decoded picture sequence;
• an instruction, configured to acquire a to-be-decoded picture from the to-be-decoded picture sequence and an auxiliary message corresponding to the to-be-decoded picture, wherein the auxiliary message is comprised in the supplemental enhancement in formation (SEI) and comprises profile information used for decoding the independently decodable area, and the profile information is used to identify a coding tool set in the independently decodable area;
• an instruction, configured to determine performance of the decoder meets a performance requirement according to the level information defined for an independently decodable area of the to-be-decoded picture;
• an instruction, configured to obtain a location identifier of the independently decodable area of the to-be-decoded picture according to the auxiliary message, wherein the location identifier of the independently decodable area comprises tile identifiers (tile id) of one or more tiles;
• and
• an instruction, configured to decode the independently decodable area of the to-be-decoded picture according to the location identifier of the independently decodable area comprised in the auxiliary message.

A decoder, disposed in a receiving apparatus for processing a video, comprising:

• one or more circuits, configured to:
• receive a video bitstream, wherein the video bitstream comprises a to-be-decoded video and supplemental enhancement information (SEI), wherein the to-be-decoded video comprises a to-be-decoded picture sequence;
• acquire a to-be-decoded picture from the to-be-decoded picture sequence and an auxiliary message corresponding to the to-be-decoded picture, wherein the auxiliary message is comprised in the supplemental enhancement in formation (SEI) and comprises profile information used for decoding the independently decodable area, and the profile information is used to identify a coding tool set in the independently decodable area;
• determining, by the decoder, performance of the decoder meets a performance requirement according to the level information defined for an independently decodable area of the to-be-decoded picture;
• obtain a location identifier of an independently decodable area of the to-be-decoded picture according to the auxiliary message, wherein the location identifier of the independently decodable area comprises tile identifiers (tile id) of one or more tiles;
• and
• decode the independently decodable area of the to-be-decoded picture according to the location identifier of the independently decodable area comprised in the auxiliary message.

A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores several instructions, and when the several instructions are executed by a device, the device is triggered to perform the following operations:

• receiving a video bitstream, wherein the video bitstream comprises a to-be-decoded video and supplemental enhancement information (SEI), and the to-be-decoded video comprises a to-be-decoded picture sequence;
• acquiring a to-be-decoded picture from the to-be-decoded picture sequence and an auxiliary message corresponding to the to-be-decoded picture, wherein the auxiliary message is comprised in the supplemental enhancement in formation (SEI) and comprises profile information used for decoding the independently decodable area, and the profile information is used to identify a coding tool set in the independently decodable area;
• determining, by the decoder, performance of the decoder meets a performance requirement according to the level information defined for an independently decodable area of the to-be-decoded picture;
• obtaining a location identifier of an independently decodable area of the to-be-decoded picture according to the auxiliary message, wherein the location identifier of the independently decodable area comprises tile identifiers (tile id) of one or more tiles;
• and
• decoding the independently decodable area of the to-be-decoded picture according to the location identifier of the independently decodable area comprised in the auxiliary message.