When you're on a Mac and try to open a MKV file on Mac QuickTime (see MKV to MOV conversion)-the default video & audio player that's integrated with every version of Mac out of the box, you will get an 'invalid file' error message. mkv extension are not always friendly in media players. Whether you are downloading video clips or hot movies from online or if you get video files from friends, there is a high chance that you will come across FHD (1080p) resolution Matroska video files (.mkv) or regular HD (720p) MKV files. MKV ( Matroska) is a flexible, open standard container format that's completely free for personal use. How to play Matroska MKV files on Mac (1080p, 720p, etc.)
