In this try, we recommend you Brorsoft Video Converter for Mac, which will surely be your best choice. In this way, playing MKV on Yosemite with QuickTime(Learn how to install QuickTime 7 Pro for Yosemite) will be simple and easy. To play MKV in Yosemite, we have an easy solution right here for you! Since MKV is not supported by QuickTime on Yosemite, you can try to convert MKV to QuickTime MOV. How to solve this problem? How can we play MKV on Yosemite smoothly? Well, this article will give you some hints. And Perian, a plug-in used to play Windows media, doesn't support Yosemite and there is no upgrade news now. The reason is that MKV is not a Mac native format. After updating your system to Mac OS X Yosemite 10.10, you may find your MKV files couldn't be played.