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hushvert

MKV converter

MKV files hold everything and play in surprisingly few places. Full-length videos exceed what browser-based conversion can chew through, so MKV to MP4 runs on our server engine, and uploaded files are deleted automatically within about an hour.

What is MKV?

MKV is the Matroska container: an open, anything-goes wrapper that can hold any video codec along with unlimited audio tracks, subtitles and chapters. That flexibility makes it the favorite of screen recorders, rippers and archivists, and also the reason TVs, phones and editing tools reject it so often. Converting to MP4 trades the extras for a file that plays essentially everywhere.

Convert MKV to another format

Common questions about MKV

What is an MKV file?
MKV (Matroska) is a flexible open container format that can hold virtually any video and audio codec, plus multiple audio tracks, subtitle tracks, and chapters in one file. That flexibility makes it popular for movies and archived video, but it also means support is uneven: many browsers, phones, and basic players cannot open MKV directly.
Why won't my MKV play on my phone or in my browser?
MKV is rarely supported natively by browsers, iOS, and many default phone players, because it can wrap codecs those players do not recognize. The dependable fix is to convert MKV to MP4, which standardizes the container and plays nearly everywhere.
How do I convert MKV to MP4 without losing quality?
hushvert converts MKV to MP4 in our server lane, using native video processing without an in-browser size ceiling so larger files are handled. Your file uploads to a clearly labeled, encrypted lane, the input is deleted immediately after conversion, and the MP4 output is removed about an hour later. Note that MKV can carry multiple tracks; the MP4 result is a standard, widely playable single-video file.
How do I pull the audio out of an MKV as MP3?
Use MKV to MP3 on hushvert. This conversion runs entirely in your browser through WebAssembly, so the file never uploads: it extracts the audio and encodes it to MP3, dropping the video and any extra tracks. It is free, unlimited, requires no account, and you can confirm nothing uploads in airplane mode or the Network tab (see /privacy-proof).
Can I convert another format into MKV?
Not on hushvert. We convert MKV out to MP4 (server lane) and to MP3 (in your browser), but we do not produce MKV files. For the widest compatibility across phones, browsers, and TVs, MP4 is the recommended target.