Sample Files
Details
MKV
Matroska Multimedia Container
About
What is .MKV?
MKV is a highly flexible multimedia container format that can hold an unlimited number of video, audio, subtitle, and metadata tracks. It supports nearly all modern codecs, making it ideal for high-quality media storage, streaming, and archiving.
History
Origin of MKV
MKV (Matroska Video) is a flexible, open-source multimedia container format created by the Matroska Project in 2002. It was designed as a universal, modern alternative to older container formats like AVI and MPEG-based containers. Built on the Extensible Binary Meta Language (EBML), MKV supports virtually any video, audio, subtitle, chapter, or metadata track. Its goal was to provide a free, feature-rich, and adaptable container capable of storing high-quality and complex media structures, making it a popular choice for HD content, Blu-ray rips, and archival use.
Learn more at: https://www.matroska.org/
Benefits
Supports virtually any video and audio codec
Allows multiple subtitle, audio, and video tracks
Ideal for high-resolution content such as 4K and HDR
Open-source and royalty-free format
Advanced features like chapters, menus, and metadata
Usage
Store high-resolution video content such as 1080p, 4K, or HDR
Use in media players that support multiple audio and subtitle tracks
Test encoding workflows using modern codecs like HEVC or AV1
Convert from MKV to MP4 or WebM using FFmpeg or HandBrake
Use Cases
Common Use Cases
Here are the use cases for this file extension
High-Quality Video Storage
Widely used for Blu-ray rips, HD movies, and archival-quality recordings.
Multi-Track Media
Supports multiple audio languages, commentary tracks, and subtitle streams.
Advanced Encoding Workflows
Perfect for storing videos encoded in H.265/HEVC, AV1, or other modern codecs.
Compatibility
Supported By
This extension is compatible with the following platforms.
Windows
macOS
Linux
Android
iOS (via supported apps)
Web Browsers (limited direct support)
More Details
Technical Specs
Here are some technical details about this extension
File Extension
.mkv
MIME Type
video/x-matroska
Container Format
Matroska
Audio Support
AAC, Opus, Vorbis, FLAC, Dolby Digital, DTS
Video Codecs
H.264, H.265/HEVC, VP9, AV1, MPEG-2
Subtitle Support
Yes (SRT, ASS, VobSub, PGS, etc.)
Metadata Support
Yes
Typical Use
High-quality video archiving, streaming, multi-track media files
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Got Questions?
Get answers to common questions
MKV files can be played using popular media players such as VLC Media Player, MPC-HC, Kodi, and many smart TV apps. Some browsers provide limited support depending on the codec.