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
: Built on the foundations of the 10.1 branch, this version continued to offer accessible 4K editing (3840x2160) for compatible Macs. iMovie 10.1.9
Whether you're or looking to switch from an older version Released in April 2018, served as a targeted
: Long-time users lamented the loss of specific tools such as chapter markers , sharing directly to iDVD, and certain QuickTime export options. Verdict: A Necessary Patch for High Sierra Released in April 2018