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Helpful articles for Final Cut Pro for Mac, Final Cut Pro for iPad and Final Cut Camera:
The bug occurred when the project setting is 1080p, and I place the 4K clips on the secondary timeline as my B-roll. When I apply the color wheel effect, the frame edge narrow a little bit, so the edge will not fit the full frame. But if I change setting to 4k, the bug will not occur.
Check this video
Mac Pro, macOS 10.15
I also found my image was being shrink.
Maybe this is not a color wheel issue right now, because I place these clips on my primary timeline they also shrink.
If you change the player background to checkerboard, this shrink issue will be noticeable.
What versions of macOS and FCP are you using?
I have a vague recollection of something like this happening quite some time ago.
I cannot reproduce it on my mac.
Does this also show on an exported video, or just inside FCP?
As a temporary workaround, you may scale the clip just a tiny bit, say 101%.
I have created two version FCP libraries, they have EVA1 5.7K ProRes Raw, GH5s, and A7S2 4K files, also have the ProRes422HQ file exporting form this project. Welcome download and check.
FCP 10.5 ( MacOS 10.15.7, Mac Pro 2019, 16c 96G W5700X)
https://drive.google.com/drive/folders/1gFrdBxOLh8PJHcCkw9GbMDAAOl_kMD7x?usp=sharing
FCP 10.4.10 (MacOS 10.14.6, MacBook Pro 15 2013late, 16G, GT 750M)
https://drive.google.com/drive/folders/140y1RIvwIzjwI3VE1g8M4sxmoCWgstAP?usp=sharing
I downloaded your project. I can see the issue with your clips.
I then added a few different 4K clips from different sources (all with same 3840x2160 dimensions), and they did NOT show the tiny border... it seems to be something with your particular camera.
I'm a little puzzled. I'm not sure what I should be looking for. When it narrows am I supposed to be seeing a bit of the underlying aqua color generator? In the YT screen capture I see like less than a pixel width of what may be the generator underneath, but it's not the full color so it may a compression artifact. Is that what you're talking about? In the 10.5 library that was uploaded I don't see anything of the underlying generator when I switch the wheels on and off. I'm using Big Sur.
If you scale the viewer up a "border" of the color of the generator becomes clearly visible, suggesting that by applying the color wheel the top clip "shrinked" by one or two frames in each direction. This happen right up there in the viewer, and remains in exported videos. It seems to indicate a rounding error somewhere...
Yes. I'm using the project that was in the library. (Have to say that it's a great way to share problems. Uploading a skinny library with the clips and the project.)
If you see something different from what I show then I accept there's a problem obviously.
This is what I see without wheels
this is what I see with wheels
If the image was being shrieked I should see the generator underneath, no?
Here is a screenshot:
Please give the exact resolution of the 4K clips. Can't reproduce any shift with either a standard 16:9 3840x2160 or a 4096x2160 clip.
I also noticed Custom LUT, Color Curve, Hue/Saturation Curve, and HDR Tools have the same issue.
Color Board and Color Finale Pro do not have the issue.
Sorry, I take it back. The problem ALSO shows in other 4K clips.
Thanks for testing!
I submitted feedback. You should do it too. The more people report this, the more likely it is to be fixed sooner.
Final Cut Pro->Provide Final Cut Pro Feedback...
Yes, I have submitted feedback. Thank for helping.
Color wheel effect bug？
