Method for selecting reference frame, electronic equipment and storage medium

Abstract

The invention discloses a method for selecting a reference frame, electronic equipment and a storage medium. The method for selecting the reference frame is used for FRC frame insertion processing, and the method comprises the following steps: obtaining a frame image in a video; calculating the sum of the absolute values of the pixel brightness differences of the corresponding pixel positions in the current video frame and the previous video frame, and determining the frame attribute of the current video frame according to the sum of the absolute values of the pixel brightness differences, wherein the frame attribute comprises an original frame and a repeated frame; counting the number of original frames in M historical video frames before the current video frame, and obtaining a current frame insertion step length according to the number of the original frames in the M historical video frames; obtaining a next to-be-interpolated frame phase according to the current frame interpolating phase and the current frame interpolating step length; and determining a frame insertion reference frame according to the next to-be-inserted frame phase. According to the method, the problem of picture jitter or picture blurring due to video frame dropping or repeated frame selection from multiple frames as the reference frame can be avoided, and the video display quality is improved.

Description

technical field [0001] The invention relates to the technical field of video processing, in particular to a method for selecting a reference frame, a non-temporary computer storage medium and electronic equipment. Background technique [0002] The current refresh rate of mainstream consumer-grade display devices such as mobile phones, computer screens, and TVs is above 60HZ, but due to various historical and technical reasons, the frame rate of mainstream movies is still 24fps (frame per second, the number of frames transmitted per second) , The domestic TV video signal frame rate is generally 25fps. Assuming that a TV with a refresh rate of 60HZ is used to play a 24fps video source, since 60 is not an integer multiple of 24, a 3:2 method is generally used to play the picture frame intermittently, that is, the first video frame is played repeatedly 2 times, and then the second video frame is played repeatedly 3 times, and so on, that is, the video of this film mode is defin...

AI Technical Summary

Problems solved by technology

However, in the real complex environment, the situation of the video source in various film modes is not perfect. Due to video clipping and splicing, insufficient decoding ability of the set-top box, some video frames are lost or frames are repeated, film mode detection errors and other complicated situations are all serious. It will result in a video stream in a certain movie mode, the actual continuous video frames are not arranged according to the ideal law

If the reference frame is selected according to the ordering rules of the screen frames in a specific movie mode, it is easy to select a non-original frame or a repeated frame as a reference frame, which will cause motion vector calculation errors, make the screen shake or blur, and reduce the video display quality

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