Frame rate control method and device

Abstract

The invention discloses a frame rate control method and a device. According to preset drop-frame processing parameters, select video frames to be discarded from received video frames; discard the video frames to be discarded and output residual video frames. By frame rate control on drop-frame, discard the video frames which can not be processed in time, instead of waiting until proper time for processing, with no large volume of video frames caching. Therefore, the process will not be delayed greatly and the process delay will not be accumulated. In addition, the inventive embodiment needs no modification for the received video frames, with the advantages of little resources consumption, simple processing process, flexible control and easy realization.

Description

technical field [0001] The invention relates to the field of video processing, in particular to a frame rate control method and device. Background technique [0002] At present, in the process of video processing, such as collecting, compressing, encoding and decoding or displaying video content, due to the limitation of processing capacity, it is necessary to control the frame rate of the received video content in many cases. By reducing the frame rate, Thereby reducing the processing power required to process video content to accommodate the limitation of processing power and avoid problems caused by insufficient processing power. For example, during video capture, it is generally necessary to compress and save the captured video images, because the frame rate during capture is constant, generally 30 frames per second, but the resolution of the captured video images is variable, if If a 320×240 image is collected, the compression processing capability is enough to compres...

AI Technical Summary

Problems solved by technology

Inserting blanks within or between frames reduces the frame rate and meets the processing capability requirements, but this method needs to cache the video frames that cannot be processed in time and wait for them to be processed before processing, so it will generate a large processing delay

And the total number of frames that need to be processed has not changed, so as time increases, the processing delay will continue to accumulate, and the delay will become larger and larger. A video frame may be delayed for a long time from being received to being output after frame rate control time

When the accumulated unprocessed video frames reach a certain number and the delay reaches a certain level, serious errors such as buffer overflow may also be caused, causing the system to crash; in addition, this frame rate control method needs to generate blanks to be inserted between or within frames, specifically Parameters such as the blank insertion position and the size of the generated blank need to be calculated and generated according to the actual situation, and the frame needs to be modified to insert blanks in the frame, so it needs to consume a lot of processing power resources, and the processing is more complicated

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