Imovie 10.1.9 Instant

: Built on the foundations of the 10.1 branch, this version continued to offer accessible 4K editing (3840x2160) for compatible Macs.

: Users reported significant slowdowns in import times—sometimes jumping from minutes to over an hour—and frequent "Can't Encode" errors during export.

Addressed a bug where opacity controls would vanish for users in German or Polish languages. iMovie 10.1.9

Fixed a persistent issue preventing users from logging into Facebook. Improved stability for SD card imports on iMac Pro models.

iMovie 10.1.9 slow import from sd card - Apple Support Community : Built on the foundations of the 10

: The ability to start a project on an iPhone or iPad and seamlessly finish it on a Mac remained a standout feature for mobile creators. The Bad: Performance & Workflow Shifts

Released in April 2018, served as a targeted maintenance update for macOS High Sierra (10.13.2+) users. While it successfully introduced essential support for modern mobile formats like the iPhone X , its reception was polarized due to performance regressions and a continued departure from the beloved workflow of iMovie 9. Key Features & Enhancements Fixed a persistent issue preventing users from logging

If you are looking for a modern alternative in 2026, Filmage Editor is often recommended as a familiar but more flexible step up. If you’d like more help, let me know: The you are currently running