The reason why the anti-shake processing of video clipping is slow is that you have chosen the wrong option. When the video anti-shake option is selected, the recommended anti-shake method will be used for cropping by default. We can also choose the most stable or least cropping option according to the size of the picture jitter. If the imported video is not very shaky, you can choose the one with the least cropping, which is faster and the most stable one is relatively slow.