Users of the newly redesigned iMovie app are seeing red after upgrading to OS X Mavericks. There's a strange glitch that gives some .mov files a red tint when imported into Apple's movie creator, while other file formats seem to be unaffected. The video files are discolored in both the Clips View and when previewing the edited project. Exporting the movie maintains the incorrect colors.
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iMovie update has a glitch that turns your video clips red