If you do a Google search on what duplicate frames in a video looks like, you will then understand why video playback can look ‘jerky’ (not smooth) with duplicate frames. So, replacing them with new unique ‘in-between’ frames that are generated by the AI should smooth out the motion of the video. In addition, if you increase the frame rate of the video (for example, from 30 fps to 60 fps), the result should also greatly benefit by replacing duplicate frames with new, unique frames.
You can check if your video has duplicate frames in any video player that allows you to advance the playback frame by frame. Choose a scene that has something moving for a couple of seconds, then you will be able to see duplicate frames, by advancing the video frame by frame. Usually, it is every fourth or fifth frame, although it can also be random.
Sometimes, the duplicate frames are not entirely identical, due to noise or something else, in which case you would use a higher sensitivity for TVAI to detect the duplicates. The drawback to that might be that it may select some unique frames as duplicates by mistake.