Convert MKV to MOV Online — No Upload, No Watermark
MKV files often carry HEVC video and AC3/DTS audio that Final Cut Pro and iMovie refuse to decode. Re-wrapping into MOV with H.264 + AAC fixes import errors.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Where MKV files come from
This pairs an MKV download or OBS recording with an Apple editing workflow, where MKV support ranges from partial to absent.
What changes when you convert MKV to MOV
| Container | Matroska rewritten as QuickTime MOV |
|---|---|
| Video | Re-encoded to H.264 at CRF 23 |
| Audio | First track re-encoded to AAC |
| Extra tracks | Additional audio and all subtitle streams are dropped |
Worth knowing first
As with any MKV conversion, only the first audio track survives and subtitles are discarded. Check what the file contains before converting if it came from a disc rip or a release with commentary.
FAQ
Why does Final Cut not support MKV?
Apple never adopted Matroska, which grew up in the open-source and fan-subtitling world rather than in professional post-production. Final Cut expects QuickTime-family containers, so MKV files need converting or remuxing first.
Can I keep the second audio track?
Not here. The conversion takes the first track. Use the FFmpeg Command Generator to build a command with an explicit stream map if you need a specific one.
Is MP4 a better target than MOV?
For most purposes yes, since MP4 plays in more places. Choose MOV when a particular Apple application is the destination and prefers it.
Is this MKV to MOV converter really free and without upload?
Yes. The tool runs entirely in your browser using FFmpeg compiled to WebAssembly. Your MKV file never leaves your device — open the DevTools Network tab to verify zero uploads. No signup and no watermark. The practical size limit is the memory your browser gives this tab, which is generous on a computer and a few hundred megabytes on a phone.