QuickTime Player on MacOS Sequoia 15.4.1 fails to merge 2160p video files

Used to be able to easily merge multiple video files together by simply dragging and dropping one on top of another within QT Player. Seems to still work ok with lower resolution videos but fails with 4K or 2160p files.

MacBook Pro 16″, macOS 15.4

Posted on Apr 25, 2025 11:16 AM

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QuickTime Player on MacOS Sequoia 15.4.1 fails to merge 2160p video files

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