Multimedia processing system, multimedia processing method, and related device

A method implemented by a multimedia processing system, wherein the method comprises:

• receiving, from a first terminal device, a first video stream having a first resolution;
• generating, based on the first video stream, a second video stream having a second resolution, wherein the second resolution is greater than the first resolution;
• receiving, from a second terminal device, a request to access the second video stream, wherein both the first terminal device and the second terminal device access a same video application;
• sending, in response to the request, the second video stream to the second terminal device;
• receiving, from a third terminal device, a third video stream;
• performing video composition based on the first video stream and the third video stream to obtain a composite video stream;
• sending, to a fourth terminal device, the composite video stream;
• receiving, from the fourth terminal device, a second video stream composition request, wherein the second video stream composition request comprises indication information of a composition operation and comprises coordinates of a key point, a length, and a width that correspond to a display area of each video stream participating in composition in a video image;
• obtaining a second control instruction comprising the coordinates;
• and
• performing the video composition on the first video stream and the third video stream according to the second control instruction to obtain the composite video stream.

A non-transitory computer program product comprising computer-executable instructions that, when executed by one or more computing devices, cause the one or more computing devices to:

• receive, from a first terminal device, a first video stream having a first resolution;
• generate, based on the first video stream, a second video stream having a second resolution, wherein the second resolution is greater than the first resolution;
• receive, from a second terminal device, a request to access the second video stream, wherein both the first terminal device and the second terminal device access a same video application;
• send, in response to the request, the second video stream to the second terminal device;
• receive, from a third terminal device, a third video stream;
• perform video composition based on the first video stream and the third video stream to obtain a composite video stream;
• send, to a fourth terminal device, the composite video stream,
• receive, from the fourth terminal device, a second video stream composition request, wherein the second video stream composition request comprises indication information of a composition operation and comprises coordinates of a key point, a length, and a width that correspond to a display area of each video stream participating in composition in a video image;
• obtain a second control instruction comprising the coordinates;
• and
• perform the video composition on the first video stream and the third video stream according to the second control instruction to obtain the composite video stream.