use another camera and switch between them when you want, would probably be best solution w/o knowing details. hope I read your problem correctly.
you can add cameras & or move them around or do whatever you like under the components tab inside a BP, just make sure you have the right camera in BP when working with them.
(done in 4.5 but should be similar)(main thing to notice is the camera part, this is actually done in a Vehicle BP. using part of the advanced vehicle project)
(just add a camera under the components tab, then compile/save/etc. then it should show up as an object on the left in the BPs variables list, then just drag it into BP event graph)
(notice the activate/deactivate being used to switch between cameras)
(you can create an event to switch them with key input either in BP or in your project settings at the top of editor)(then later after testing setup an event to do it later whenever you want it to switch)
(if you need more look at the advanced vehicle template project you can create, it has a camera switching from 3rd Person to inside the vehicle 1st Person)
(this isn’t exactly easy but not hard either, you should be able to do this, use this for hints on what to do, experiment n search google etc. if ya run into problems or ask again in forums)
Edit : I had not seen your video before but yes splines is what you’ll need and limit camera movement. Check splines in content examples to have examples easier to follow than the one is the link i gave you.
