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Forums Apple Final Cut Pro X Custom Overlay Issues

  • Custom Overlay Issues

  • Tangier Clarke

    November 7, 2020 at 7:45 pm

    A custom overlay seems to let some pixels peek through. FCP X doesn’t maintain the overlay well when changing the window size; some pixel peek close and new vertical lines of the footage behind the overlay peek thogugh. See image below. Any thoughts with this folks? Am I missing something or are the numbers I am using wrong for the overlay?

    Footage: 4K/UHD-3840×2160

    Overlay: 2.39 (DCI Scope) – 3840×1609 visible inside the 4K/UHD overlay frame size.

    Aspect ratio values for overlay used from this site:

  • Patrick Donegan

    November 7, 2020 at 8:42 pm

    Is the actual output file pixelated or just this preview?

  • Jeremy Garchow

    November 7, 2020 at 8:47 pm

    I think that FCPX does this weird stuff with transparency on still images. If you import the image in to the project, lay it over the top, does it display the same weirdness?

    Where did you make the overlay file and how did you export it?

  • Tangier Clarke

    November 7, 2020 at 9:27 pm

    Not sure what you mean. There’s no pixelation at all. I just notice that the overlay doesn’t fit properly and allows these lines of pixels to peek through at the top and bottom. Perhaps it’s just simple math and I’ve made a mistake. However when I have the (what I think is the properly formatted overlay) applied, it doesn’t sit cleanly over my video. As i resize the playback window sometimes it will be clean, but mostly it won’t.

    So either I have the dimensions wrong, or something strange is happening inside FCP X.

    Consequently the overlay that seems to work best is a 4096×1716 visible inside a 4096×2304 overlay. However I wouldn’t have chosen this since my footage is 4K/UHD.

  • Tangier Clarke

    November 7, 2020 at 9:33 pm

    Jeremy I think you have the problem solved. Here are images of the same overlay applied using the new custom overlay feature and as a graphic on top of my video.

    I’d prefer to use the custom overlay feature (at least until I finish the edit) since it won’t invoke any potential rendering like an actual graphic in the timeline would.

    I made the file in Pixelmator. Nothing fancy and pretty simple. It’s a 16-bit PNG.

  • Andreas Kiel

    November 9, 2020 at 12:48 pm

    I’ve noticed same behaviour. It’s not happening all the time. Havent’t found the reason why.

    If you want to create custom overlays quickly, here a little free app of mine.

  • Tangier Clarke

    November 9, 2020 at 2:00 pm

    I am glad I’m not the only one to notice this Andreas.

  • Jeremy Garchow

    November 9, 2020 at 7:00 pm

    If you want to create custom overlays quickly, here a little free app of mine.

    Very cool, Andreas! I have a suggestion, when you click “center marks” in the ‘zone’ mode, it would be very handy to have a center crosshair. Cheers!

  • Andreas Kiel

    November 10, 2020 at 2:55 pm


    Your wish is my command 😉

    Download new version

  • Jeremy Garchow

    November 10, 2020 at 4:06 pm

    Fantastic. My donation is in the ‘mail’! ?

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