Convert MKV to Opus
Turn Matroska video files (.mkv) into Opus audio (.opus) in seconds. Drop one file or a whole batch: the conversion happens right in your browser, with no sign-up, no watermark and no upload.
How to convert MKV to Opus
- 1Drop your MKV files into the box above, or click to choose them.
- 2Opus is already selected. Adjust the options if you like.
- 3Click Convert and download your Opus files.
Good to know
- Only the sound is kept: the audio track is extracted and saved as Opus, and the picture is discarded.
- Large videos are processed as a stream, so even long files work as long as your device has enough memory.
Frequently asked questions
Is converting MKV to Opus free?
Yes. There is no sign-up, no watermark and no limit on the number of files.
Are my files uploaded?
No. Everything runs in your browser, so your files are never uploaded to a server. That also makes it fast, because nothing has to travel over the network.
Will I lose quality converting MKV to Opus?
Opus stores the result with some loss. With the default settings the difference is hard to notice, and you can raise the quality if you need to.
Can I convert several files at once?
Yes. Drop as many MKV files as you like. They are converted one after another and you can download them individually or as a ZIP.
Is there a file size limit?
There is no fixed limit. Very large files depend on your device's memory, since the conversion runs locally.
What is MKV?
MKV is a flexible open container that can hold many video, audio and subtitle tracks.
What is Opus?
Opus is a modern, efficient audio codec that sounds great even at low bitrates.