The first solution for playing AVI on MacOS High Sierra is to. Play AVI File on Mac with QuickTime Plugin Perian play AVI on Mac via QuickTime Perian With Quicktime plugin - Perian, you can play AVI video movie in HD, SD on any Mac OS X 10.6.8 or later, El Capitan, Yosemite, needless of AVI player for Mac. Play AVI on MacOS High Sierra with QuickTime Plugin Perian.
Unfortunately, the latest version 1.2.3 of Perian is not compatible with Mac OS X Mavericks (10.9), Mountain Lion (10.8) and Lion (10.7). As a great open-source QuickTime component, Perian is the saver to allow QuickTime to play all kinds of AVI videos for Mac users.
