.MKV File Extension

.MKV File Extension

File Type

Matroska Video File

Developer Matroska
4.1  |  1888 Votes
Category Video Files
Format Binary

What is an MKV file?

An MKV file is a video file saved in the Matroska multimedia container format. It supports several types of audio and video codecs and may include .SRT, .SSA, .USF (Universal Subtitle Format), or VobSub subtitles. MKV files are typically used for storing short video clips, TV shows, and movies.

More Information
Screenshot of a .mkv file in Microsoft Movies & TV
MKV file open in Microsoft Movies & TV

The Matroska multimedia container format is open source and was originally released in December 2002. It is similar to the .AVI, .ASF, and .MOV formats and can contain any number of video, audio, image, and subtitle tracks. Multimedia files that utilize the Matroska container format and store one or more video tracks are known as Matroska Video files, and are distinguished by the .mkv file extension.

While the MKV format is often used to store short video clips, TV shows, and movies, it has become popular in the anime fan-subbing community. Many of these users create subtitles and the MKV format is especially useful since it supports multiple audio and subtitle tracks in the same file.

NOTE: The Matroska name comes from the Russian Matryoshka doll that contains numerous smaller, nested dolls of the same shape.

How do I open an MKV file?

While the MKV video format is not as common as the .MP4, MOV, and AVI formats, many media players still support opening and playing MKV files, including:

Additionally, you can convert MKV videos to other, more common video formats using HandBrake (cross-platform).

Open and view .MKV files with File Viewer Plus.Free Download

Programs that open or reference MKV files

Updated November 2, 2020

Verified by FileInfo.com

The FileInfo.com team has independently researched the Matroska Video file format and Mac, Windows, Linux, Android, and iOS apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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