Gopro hero 10 footage is jittery/choppy after using Final cut

Hi.

Playback of gopro hero 10 footage is smooth using vlc on my iMac M1 2021..
When i edit the same footage in Final Cut Pro the end result is jittery and choppy.

Hope anyone can help me, because this bothers me a bit... 

Finalcut final footage :  

Directly from gopro footage: 

          

Have a nice day !!

You apparently put the 60 fps GoPro footage in a FCP 24 fps project, exported it that way then uploaded that to Youtube. In the Youtube web interface if you right-click and pick "Stats for Nerds" you can see that.

When you put 60 fps footage in a 24 fps timeline it must be "rate confirmed" to maintain the same 1x playback speed. That requires some algorithm that discards every x frames at certain intervals, which hurts smooth motion.

If you want 60 fps you just create a FCP project (aka timeline) with that, or make sure the first clip you add to an auto project is 60 fps, then it will assume those characteristics. See attached.

You can verify the resolution and frame rate of your exported video by playing it using Quicktime Player and pressing CMD+I, then spinning down the disclosure triangle for "Video Details".

Gerald Undone did a good tutorial about the tradeoffs in mixing frame rates:  Gerald Undone - Mixing Frame Rates