You either get duplicate frames and the video stutters a bit or you interpolate and get either blurs or distortions. You're right that capturing 50 FPS video at

You either get duplicate frames and the video stutters a bit or you interpolate and get either blurs or distortions. You're right that capturing 50 FPS video at 60 FPS is sorta OK in terms of data loss; you'll capture all the frame, and you can get a pretty good idea of which frames are duplicates, but that's different from high-quality playback.