Yes, optical flow struggles with certain shoots, such as shoots with really thin lines in it. And optical flow is really good for super slow mo shots. For the footage shot at 60 fps you can slow it down to half speed no problem. For the 30 fps stuff not so much.
60fps footage: You will need to conform your 60fps in Cinema Tools. It does a great job. Be forewarned that it conforms your original clip. It doesn’t make a copy. If you need to keep your original keep that in mind.
30fps: If Optical Flow doesn’t work then I would just play with the other frame blending options.
Hope this helps and best of luck.
Stephen Smith
Utah Video Productions
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