Code rate is the number of data bits transmitted per unit time during data transmission. Generally, the unit we use is kbps, which means kilobits per second. The popular understanding is sampling rate or bit rate (unlike sampling rate, the unit of sampling rate is Hz, which means the number of samples per second). The larger the sampling rate per unit time, the higher the accuracy, and the closer the processed file is to the original file, but the file size is proportional to the sampling rate, so almost all coding formats pay attention to how to achieve the minimum distortion at the lowest bit rate. cbr (fixed bit rate) and vbr (variable bit rate) are derived from this core. For example, the higher the bit rate of an audio, the smaller the compression ratio, the smaller the loss of sound quality, and the closer it is to the sound quality of the sound source.

Secondly, the video frame rate is introduced.

Video frame rate is a method to measure the number of displayed frames. The so-called unit of measurement is frames per second (FPS) or "hertz" (Hz). This word is mostly used in film and television production and video games.

Third, the difference

Bit rate is an index to measure the transmission of audio data, and high bit rate will bring good sound quality. Frame rate is an index to measure the number of frames in a video. A high number of frames makes the video picture smooth. Frames per second (fps) or frame rate indicates the number of times that the graphics processor can update every second when processing the field. High frame rate can get smoother and more realistic animation. Generally speaking, 30fps is acceptable, but improving the performance to 60fps can obviously improve the sense of interaction and realism, but generally speaking, it is not easy to detect the obvious improvement of fluency when it exceeds 75fps.

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Resolution: affects the image size and is proportional to the image size: the higher the resolution, the larger the image; The lower the resolution, the smaller the image.

Clarity/clarity

At a certain bit rate, the resolution is inversely proportional to the sharpness: the higher the resolution, the less clear the image, and the lower the resolution, the clearer the image.

In the case of a certain resolution, the code rate is directly proportional to the definition, and the higher the code rate, the clearer the image; The lower the bit rate, the less clear the image.