Convert MKV to MP4
MKV (Matroska) holds high-quality video, but phones, browsers and social uploads often refuse it. This transcodes an MKV to an H.264 MP4 with WebCodecs in your browser — the same picture in a container that plays everywhere. Nothing is uploaded and there is no size cap.
Runs entirely in your browser — your file is never uploaded.
Load an audio or video file to start.
Why ScribeToAny
- Upload MP3, MP4, M4A, MOV, AAC, WAV, OGG, OPUS, MPEG, WMA, WMV — audio is extracted from video automatically.
- About 98 languages with automatic detection, powered by a Whisper-class engine on dedicated GPUs.
- Eight export formats: TXT, SRT, VTT, TSV, CSV, JSON, PDF and DOCX — plus batch ZIP export.
- Speaker recognition labels every segment. Click any sentence to replay the matching audio.
Frequently asked questions
What happens to multiple audio or subtitle tracks in the MKV?
MP4 carries the video and the primary audio track. Extra audio tracks and embedded subtitles that MKV can hold are not kept — if you need a specific audio track, select it in a player first. For subtitles, convert them separately with the subtitle tools.
Is the file uploaded?
No. It is transcoded with WebCodecs on your own device — nothing is sent to a server, so there is no account, no quota and no size limit. Very large 4K files depend on your device’s memory. Chrome, Edge and Firefox work best.
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