So, here’s an easy tutorial which will show you How to Play AVI/MKV Files on Mac OS X using the 3 Best Free Avi Players to Play AVI/MKV/DIVX/MOV/WMV files on Mac OS X.
Also, the previous solution of playing these files in Quicktime 7 using Perian doesn’t work anymore since the new Mac OS X Mavericks update. These formats are widely used to distribute Videos. Mac OS X’s default media player – Quicktime 10 doesn’t natively support the playback of AVI, MKV & DIVX video files.