Apple MPEG-4 Video
Apple's close variant of MP4, used by iTunes and the Apple TV app.
- Type
- video
- Best for
- Apple video libraries
No account · no upload · no watermark
Convert M4V to MKV. Completely free.
Drop your M4V and get an MKV back, right here in this tab. Your own computer does the work, so nothing gets uploaded, and there's no paid version.
M4V to MKV converter
Matroska Video
An open container that can hold almost any codec plus multiple audio and subtitle tracks.
- Type
- video
- Best for
- archiving films with several tracks
What to expect
If the video and audio inside are already something MKV can hold, they're copied across with no quality loss, which takes seconds. Otherwise they're re-encoded, on your graphics hardware where possible and with FFmpeg in the tab where not.
How to convert M4V to MKV
- Drop your M4V on this page, or choose it from your device.
- MKV is already selected. Adjust quality, size or trim if you want to, and each option shows the size it will produce.
- Press Convert, watch it work, then download the result.
Questions
Is this M4V to MKV converter really free?
Yes, completely. Every tool and every format is free, and there's no paid version, account, watermark or daily limit.
Do my files get uploaded?
No. Your browser does the work on your own device, so your files stay with you. Closing the tab clears them from memory.
Can I convert several files at once?
Yes. Drop as many as you like, and the results can be downloaded together as a ZIP.
Does it work on a phone?
Yes, in a current mobile browser. Large files are limited by how much memory your device can spare.
What should I know about M4V to MKV?
If the video and audio inside are already something MKV can hold, they're copied across with no quality loss, which takes seconds. Otherwise they're re-encoded, on your graphics hardware where possible and with FFmpeg in the tab where not.
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Ready to convert your M4V?
- Completely free
- Nothing uploaded
- No account
- No watermark