Can VLC Media Player Open MKV Files?
Compatibility information for .MKV files in VLC Media Player.
Recommended Method
Open the MKV file directly in a current VLC release. VLC supports Matroska natively and normally does not require an external codec pack. Use Convert/Save only if you specifically need to create another media file.
Compatibility Notes
VLC officially supports Matroska (MKV) playback and includes support for a wide range of audio and video codecs. Actual playback can still depend on the codecs and streams contained inside a particular MKV file. VLC is primarily a media player rather than a timeline-based video editor, so opening and playback are supported while native MKV editing is not.