Matroska Video (MIME: video/x-matroska) is an open-standard multimedia container format that can hold an unlimited number of video, audio, subtitle tracks, and metadata in a single file. It's popular for high-quality video storage.
History and Development
MKV (Matroska Multimedia Container) was launched in 2002 by Steve Lhomme, named after Russian matryoshka nesting dolls. The format was designed to be a universal, open-source alternative to proprietary containers. It became the de facto standard for high-quality video distribution, particularly for Blu-ray remuxes and anime fansubs.
Technical Specifications
- Container: Matroska (EBML-based)
- Video codecs: H.264, H.265, VP9, AV1, virtually any codec
- Audio codecs: AAC, FLAC, DTS, Dolby Atmos, virtually any codec
- Subtitles: SRT, SSA/ASS, PGS, VobSub (multiple tracks)
- Chapters: Full chapter support with titles
- Max file size: Virtually unlimited
Common Use Cases
MKV is used for high-quality video archiving, Blu-ray remuxes, anime with multiple subtitle tracks, media server libraries (Plex, Jellyfin), and any scenario requiring multiple audio/subtitle tracks in one file.
MKV vs Similar Formats
- MKV vs MP4: MKV is more flexible (more codecs, tracks); MP4 has better device support. Convert MKV to MP4 for mobile playback.
- MKV vs AVI: MKV is far superior — modern codecs, no size limit, multiple tracks, and better compression.
How to Open and Edit
MKV plays in VLC, mpv, and MPC-HC on all platforms. Modern smart TVs and media players (Plex, Kodi) support MKV natively. For editing, use HandBrake, MKVToolNix, or FFmpeg.
Frequently Asked Questions
Can I play MKV on iPhone?
iOS doesn't support MKV natively. Use VLC for iOS, or convert MKV to MP4 for native playback in the Photos app or other iOS players.
Is MKV better than MP4?
MKV is more versatile (supports more codecs and features), but MP4 has much broader device compatibility. For local media libraries, MKV is preferred. For sharing, use MP4.