[Jeff Kirkland]

You can spend weeks trying to track down weird issues like this so I’d personally bite the bullet and do a clean install of the entire Mac. If that doesn’t fix the issue then I’d suspect some sort of fault with the graphics card.

I had issues a couple of years ago with FCPX freezing the entire computer when rendering which, when a clean install didn’t clear it up, turned out to be a faulty GPU. Every other app worked fine, it was just FCPX that triggered it.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

Assuming you made the lower third in motion, you can always open it there set it up the way you need with the person’s name, etc then save a copy Back to FCPX. Then just drag it on like any other title.

Alternatively, you could create an empty compound clip, copy and paste the title into that. From there, you just attach the coumpund clip to the storyline as needed.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

I’d personally not be bothered about mixing the two although the 4k sourced material tends to look a little better than the straight 1080p stuff but my first thought would be why shoot any of it in 1080p?

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

I rarely shot anything but 4k for a couple of years – because if you can, why not? Future proofing, reframing and stabilisation options and all that good stuff.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

I ave the same issue with in of my older iMacs. The whole thing has just ended up too slow to use. On the other hand, my 2013 Mac Pro and even my little MacBook Air are running High Sierra and FCPX just fine.

If you’re going to roll back, I’d do another clean install. I think bringing back anything other than data from a system that isn’t working is asking for trouble.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

But you can just set each one rendering and they’ll queue up and render one after the other, or you can send each one to compressor to queue them up there, then add your render settings globally and batch render. If you use a keyboard shortcut for “Send to Compreessor”, it really only takes a couple of seconds to queue each one up.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

I have read other reports of the FCPX interface playing up under High Sierra. Everything from red clips to window layouts randomly resetting but this is the first time I’ve seen any mention of your issue.

I’ve been running High Sierra for a couple of weeks now and I’ve had zero issues so far but I did a clean install rather than an update.

My advice is to never update the operating system past the version that was current when your version of FCPX was released unless there’s a compelling reason to do so. I did update but it was a quiet week and I had to reinstall the machine anyway so it was a chance to play and see how buggy it was. So far, so good.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

Colour Board corrections mostly translate across to Resolve. I have no idea if you can get from Resolve to PP with the corrections intact.

If you’re using the latest version of Color Finale rather than the Colour Board, it can export a LUT that you could apply in AE.

Outside of that Jeremy’s suggestion of Colorista is a good one.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

I’d probably sit one clip over the other, set the top clip blend mode to difference so you can easily see when they’re in alignment, then move the top clip to the end of the sequence and repeat.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland

[Jeff Kirkland]

FCPX defaults spatial conform to ‘fit’ so if you are using a custom resolution it pays to select all the clips in the browser and set them to ‘fill’ before you start editing. As said though, you can now just select all the clips on the timeline and change spatial conform to ‘fill’ to update them all at once.

—-
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland