AnyMP4 Video Converter Ultimate is a powerful video converter, which is capable of 500+ video or audio conversion at 70x faster speed. Well, you can try to convert MKV to the popular MP4, MOV, FLV, 3GP, WMV or AVI format. The MKV files usually failed to play in VLC Media Player if there is the essential codec missing. It also shows a grey screen, or VLC crashes to exit while playing MKV. Sometimes an error window comes out while playing the MKV file. Many users complain there are errors that cause VLC Media Player filed to play MKV file on their computer. You can also drag and drop the MKV file to the VLC Media Player, it will be played automatically. Open VLC Media Player, click Media and select Open File option to find and open the MKV file on your computer. Then the MKV file will be played in VLC Media Player. Right click on your MKV file, select Open with and choose VLC Media Player.

You can free download and install VLC Media Player from its official website in advance. There are two to open MKV files in VLC Media Player by default. VLC Media Player is a free and open source multimedia player that can play most codecs like MKV, MPEG-2, MPEG-4, H.264, WebM, WMV, MP3 and more.

Vlc matroska codec