Transcribe MKV video to text
Convert MKV video to text free. Works with OBS recordings and large MKV files. No upload: transcription runs locally in your browser.
Drop your video or audio file here
or click to browse. It’s free, no signup.
MP4 · MOV · WebM · MKV · AVI · MP3 · WAV · M4A and more
🔒 100% private: transcription runs in your browser. Your file is never uploaded.
MKV is a favorite for OBS recordings and archived video, but many online transcription tools reject it or choke on the file size. FreeTranscribe handles MKV in your browser with a built-in decoder, so there is no conversion step.
And because there is no upload, large recordings don’t sit on a progress bar for an hour before transcription even starts.
How it works
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Drop your file
Nothing is uploaded. The file stays on your device the whole time.
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AI transcribes locally
OpenAI’s Whisper model runs in your browser, so no server ever sees your file.
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Copy or download
Plain text, or timestamped SRT and VTT subtitles ready to use anywhere.
Frequently asked questions
Why do other sites reject MKV files?
MKV is a container many web tools never added support for. FreeTranscribe includes an FFmpeg-based decoder, running in your browser through WebAssembly, for formats like MKV and AVI.
Can I transcribe OBS recordings?
Yes. OBS’s default MKV output works. Drop the file in and the audio track is extracted automatically.
Does it pick the right audio track?
The first audio track is used. If your recording has separate mic and desktop tracks, remux to a single track for best results.