Make sure your project settings (command-J) match your video material – it’s easy to accidentally put DV material in an SD timeline. Also, to double-check, view on an NTSC monitor – it can be normal to see interlacing on the computer that won’t show on the monitor (FCP only shows one field in the Canvas by default).
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Mark Spencer
Freelance Editor/Producer
Apple-certified instructor, Final Cut Pro and Motion
Author, Motion Visual Quickstart Guide from Peachpit Press (coming soon)
https://www.applemotion.net