Opus to MKV Converter
Turn Opus audio into a genuine MKV video with a clean background for desktop players, media libraries, and editing. Convert securely and download free.
Drop your Opus files here
Up to 500MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your Opus files
Drag and drop or select Opus files from your device. You can upload multiple files at once.
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Configure Output
Choose an audio quality setting to balance sound quality and file size.
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Download MKV files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert Opus to MKV?
Opus is an efficient audio codec designed for speech, music, streaming, and real-time communication. Converting it to MKV creates a flexible Matroska video container used for media libraries, desktop playback, and home entertainment, ready for workflows that use the destination format.
MKV plays in VLC, Plex, Kodi, many smart TVs, desktop media players, and home entertainment applications.
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Frequently Asked Questions
How do I turn Opus audio into MKV video?
Add your Opus file, choose your preferred audio quality, start the conversion, and download the completed MKV video. No account is required.
Which Opus files can I convert?
This converter works with browser recordings, voice chats, streaming audio, podcasts, and modern Opus files. The complete audio track is placed into a genuine MKV video.
What appears in the MKV video?
The video uses a clean 1280 by 720 visual background while preserving the full duration of your Opus recording.
What video and audio codecs are used?
The completed MKV uses H.264 video with AAC audio for reliable playback, clear sound, and compatibility with its intended media workflows.
Where can I use the converted MKV video?
MKV works with modern browsers, websites, compatible presentation tools, VLC, and open-media applications, making browser audio, voice chats, podcasts, and streaming recordings easier to publish or present as video.
Is Opus to MKV free and secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted shortly after conversion. No account is required.