What is a MKV file?
MKV (Matroska Video) is a free, open container that can hold unlimited video, audio and subtitle tracks in one file. It was introduced in 2002 by Matroska.org (open standard).
What MKV is good at
- Stores many audio tracks, subtitles and chapters
- Supports almost every codec
- Open and royalty-free
Where MKV falls short
- Not supported natively by some TVs, iPhones and older editors
- Less friendly for direct social uploads
When to use MKV
- Movie and TV archives with multiple languages
- Keeping subtitles inside the file
- Media-server libraries such as Plex and Jellyfin
Where MKV files open
MKV files open in VLC, Plex, Kodi, most Android players and modern Windows; limited on iOS and older TVs.
MKV compared with MP4
MKV or MP4? MKV is best for movie and TV archives with multiple languages. MP4 is best for uploading to YouTube, Instagram, TikTok and WhatsApp. Convert MKV to MP4 or convert MP4 to MKV.
Frequently asked questions
What is a MKV file?
MKV (Matroska Video) is a free, open container that can hold unlimited video, audio and subtitle tracks in one file. It was introduced in 2002 by Matroska.org (open standard).
What are the advantages of MKV?
Stores many audio tracks, subtitles and chapters; supports almost every codec; open and royalty-free.
What are the drawbacks of MKV?
Not supported natively by some tvs, iphones and older editors; less friendly for direct social uploads.
What programs open MKV files?
MKV files open in VLC, Plex, Kodi, most Android players and modern Windows; limited on iOS and older TVs.
How do I convert a MKV file?
Choose the MKV converter you need from the list on this page, drop in your file and press Convert. You get your new file in seconds, free and without sign-up.