Encoding method, electronic device, communication system, storage medium, and program product

An encoding method, implemented by a communication system, wherein the method comprises:

• separately sending, by a third device of the communication system, a first instruction to a first device and a second device of the communication system;
• configuring, by the first device, a first resolution according to the first instruction by:
• controlling the first device to capture first images;
• and
• processing the first images captured by the first device to obtain a first image stream, wherein the first resolution is of the first image stream;
• configuring, by the second device, a second resolution according to the first instruction by:
• controlling the second device to capture second images;
• and
• processing the second images captured by the second device to obtain a second image stream, wherein the second resolution is of the second image stream;
• identifying, by the third device, a first I-frame position of the first image stream and a second I-frame position of the second image stream based on the first resolution, the second resolution, an I-frame time interval, and a frame rate, wherein an I-frame position is a frame sequence number of an I-frame, and wherein the identifying, by the third device, the first I-frame position and the second I-frame position comprises:
• using, by the third device, a first frame sequence number of a first frame of image in the first image stream as a second frame sequence number of a first I-frame in the first image stream;
• using, by the third device, a third frame sequence number of a second frame of image in the second image stream as a fourth frame sequence number of a second I-frame in the second image stream;
• identifying, by the third device, a first I-frame position weight of the first image stream and a second I-frame position weight of the second image stream based on the first resolution and the second resolution;
• and
• identifying, by the third device, a fifth frame sequence number of a first nth I-frame in the first image stream and a sixth frame sequence number of a second nth I-frame in the second image stream based on the first I-frame position weight, the second I-frame position weight, the I-frame time interval, and the frame rate, wherein n is greater than or equal to 2;
• sending the first I-frame position to the first device;
• sending the second I-frame position to the second device;
• encoding, by the first device, the first image stream based on the first I-frame position to obtain a first compressed stream;
• sending the first compressed stream to the third device;
• encoding, by the second device, the second image stream based on the second I-frame position to obtain a second compressed stream;
• and
• sending the second compressed stream to the third device.

A first device comprising:

• a first camera and a second camera configured to capture images;
• and
• a processor coupled to the first camera and the second camera and configured to:
• control the first camera and the second camera to capture the images;
• and
• process first images captured by the first camera to obtain a first image stream, wherein the first image stream comprises a first resolution;
• process second images captured by the second camera to obtain a second image stream, wherein the second image stream comprises a second resolution;
• identify a first I-frame position of the first image stream and a second I-frame position of the second image stream based on the first resolution, the second resolution, an I-frame time interval, and a frame rate, wherein the I-frame time interval is based on a current network bandwidth, a first bandwidth threshold, and a second bandwidth threshold, and wherein the first bandwidth threshold is greater than the second bandwidth threshold;
• use, when the current network bandwidth is greater than or equal to the first bandwidth threshold, a first preset interval as the I-frame time interval;
• identify when the current network bandwidth is greater than the second bandwidth threshold and less than the first bandwidth threshold, the I-frame time interval based on the current network bandwidth, the first bandwidth threshold, the second bandwidth threshold, the first preset interval, and a second preset interval, wherein the second preset interval is greater than the first preset interval;
• encode the first image stream based on the first I-frame position to obtain a first compressed stream;
• encode the second image stream based on the second I-frame position to obtain a second compressed stream;
• and
• send the first compressed stream and the second compressed stream to a second device.