What does pr key frame distance 72 mean?

The Pr key frame distance of 72 means that the frequency of recording key frames into a file is 72. According to the relevant information of the query, the key frame distance 72 is displayed, and the lower the better, especially the video with fast speed change needs to be smaller. The key frame distance will tell the encoder how often to reevaluate the video image and record complete frames or key frames in the file. Deleting it will reduce the quality of the clip. The key frames in pr are used to make animation, that is to say, when making animation, users type two key frames at different times, and then modify the attributes of the key frames to different values, thus forming an animation.