Video encoding method and apparatus, storage medium, and device

A video encoding apparatus, comprising:

• circuitry configured to:
• obtain a to-be-encoded video, the video including at least two video frames arranged in sequence;
• calculate, for an ith video frame in the at least two video frames, a quantization parameter, and a quantization parameter threshold of the ith video frame, i being a positive integer greater than or equal to 2;
• determine a coding resolution of the ith video frame according to the quantization parameter and the quantization parameter threshold, the coding resolution being a first coding resolution or a second coding resolution, the first coding resolution being a resolution in a case that the ith video frame is sampled, and the second coding resolution being a resolution in a case that the ith video frame is downsampled;
• and
• encode the ith video frame at the coding resolution determined by the determining module,
• wherein, in a case that there are two threshold sets and the two threshold sets correspond to different coding resolutions, the determining comprises:
• determining a quantization parameter according to a coding cost ratio between a first coding cost based on the ith video frame being an I frame and a second coding cost based on the ith frame being a P frame, the two threshold sets, and the first coding resolution in a case that the coding resolution of the ith video frame is assumed to be the first coding resolution during calculation of the quantization parameter;
• and
• determining the quantization threshold parameter according to the coding cost ratio, the two threshold sets, and the second coding resolution in a case that the coding resolution of the ith video frame is assumed to be the second coding resolution during calculation of the quantization parameter.

A non-transitory computer-readable medium encoded with computer-readable instructions that, when executed by a processor, cause the processor to perform a method comprising:

• obtaining a to-be-encoded video, the video including at least two video frames arranged in sequence;
• calculating, for an ith video frame in the at least two video frames, a quantization parameter and a quantization parameter threshold of the ith video frame, i being a positive integer greater than or equal to 2;
• determining a coding resolution of the ith video frame according to the quantization parameter and the quantization parameter threshold, the coding resolution being a first coding resolution or a second coding resolution, the first coding resolution being a resolution in a case that the ith video frame is sampled, and the second coding resolution being a resolution in a case that the ith video frame is downsampled;
• and
• encoding the ith video frame at the coding resolution,
• wherein, in a case that there are two threshold sets and the two threshold sets correspond to different coding resolutions, the determining comprises:
• determining a quantization parameter according to a coding cost ratio between a first coding cost based on the ith video frame being an I frame and a second coding cost based on the ith frame being a P frame, the two threshold sets, and the first coding resolution in a case that the coding resolution of the ith video frame is assumed to be the first coding resolution during calculation of the quantization parameter;
• and
• determining the quantization threshold parameter according to the coding cost ratio, the two threshold sets, and the second coding resolution in a case that the coding resolution of the ith video frame is assumed to be the second coding resolution during calculation of the quantization parameter.