To do this, you can use Dimo Video Converter Ultimate for Mac to help you. What you need to do is to convert AVI to Mac/QuickTime friendly MOV format for playing on MacOS High Sierra easily. This is the reason why you can't play AVI movies with Quicktime on Mac. Convert AVI in MacOS High SierraĪs a container format, AVI is not a specific type of file and there is no single codec for videos with.
