VideoverifiedReviewed 2026-08-08

MKV

Matroska Video · video/x-matroska · .mkv

Overview

MKV is an open container that can hold many video, audio, subtitle, and metadata tracks in one file. It is popular for local playback and high-quality encodes, but web streaming support is limited without extra tooling.

Typical use cases

  • Local playback
  • High-quality encodes
  • Multi-track video
  • Fan-subtitled media

Advantages

  • Designed for local playback
  • Lossy or lossless storage
  • Open specification
  • Browser support: Limited native web playback

Disadvantages

  • Not universally supported on the web
  • Streaming support varies
  • Metadata and track layout can confuse tools

How to open or use it

Open MKV files with an application that supports video/x-matroska. Editing with desktop video tools. For delivery, use a viewer or converter that reads mkv.