Point cloud encoding and decoding method and apparatus, computer-readable medium, and electronic device

A point cloud decoding apparatus, comprising:

• a memory storing instructions;
• and
• a processor configured to execute the instructions, and wherein upon execution of the instructions, the processor is configured to cause the point cloud decoding apparatus to:
• receive a point cloud file transmitted by a data source, wherein the point cloud file comprises:
• one or more point cloud media tracks having the same point cloud content, and
• one or more point cloud media tracks having different frame rates;
• parse file encapsulation information of the point cloud media tracks to obtain frame rate indication information carried in the file encapsulation information, wherein
• the frame rate indication information indicates frame rates of the point cloud media tracks;
• select and decode a point cloud media track with a designated frame rate from the point cloud file according to the frame rate indication information carried in the file encapsulation information;
• obtain a frame rate of a to-be-presented point cloud media track;
• select another point cloud media track having the same frame rate as that of the to-be-presented point cloud media track from the point cloud file according to the frame rate indication information carried in the file encapsulation information;
• and
• replace the to-be-presented point cloud media track with the another point cloud media track to decode and present the another point cloud media track.

A point cloud decoding apparatus, comprising:

• a memory storing instructions;
• and
• a processor configured to execute the instructions, and wherein upon execution of the instructions, the processor is configured to cause the apparatus to:
• receive a point cloud file transmitted by a data source, wherein the point cloud file comprises:
• one or more point cloud media tracks having the same point cloud content, and
• one or more point cloud media tracks having different frame rates;
• parse file encapsulation information of the point cloud media tracks to obtain frame rate indication information carried in the file encapsulation information, wherein the frame rate indication information indicates frame rates of the point cloud media tracks;
• select and decode a point cloud media track with a designated frame rate from the point cloud file according to the frame rate indication information carried in the file encapsulation information;
• and
• after the selection and decoding of the point cloud media track with the designated frame rate from the point cloud file according to the frame rate indication information carried in the file encapsulation information:
• obtain a frame rate of a to-be-presented point cloud media track;
• select one or more other point cloud media tracks having the same frame rate as that of the to-be-presented point cloud media track from the point cloud file according to the frame rate indication information carried in the file encapsulation information;
• decoding the other point cloud media tracks;
• and
• merge and present the one or more other point cloud media tracks and the to-be-presented point cloud media track.