This interpolation method duplicates or removes frames as needed to speed or slow your footage.
When converting 24FPS to 30FPS content this presents itself as a repeating pattern of four frames of motion and one duplicated frame.
This interpolation method duplicates or removes frames as needed to speed or slow your footage and blends between the frames to make it look smoother..
As you can see in the image carousel below, this can lead to ghosting or doubling of imagery in interpolated frames.
This interpolation method duplicates or removes frames as needed to speed or slow your footage and interpolates new frames in between to achieve smoothest possible motion.
With some type of content the algorithim behind optical flow may not yield the best results. Try it on your content and see if it works for you.