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ConvertAnyVideo

M4V to MKV Converter

Convert M4V videos to MKV in seconds. Change resolution, quality and frame rate if you like — all in your browser.

or drop files here

Up to 1 GB per file · Files never leave your device

  • 100% free
  • No sign-up
  • No upload — private
  • No watermark

How to convert M4V to MKV

  1. Add your M4V files

    Click “Choose Files” or drag and drop your M4V videos onto this page.

  2. MKV is selected

    The output is already set to MKV. Open Advanced settings if you want to change the quality, resolution or length.

  3. Convert and download

    Click Convert. Your MKV file is ready in moments — nothing is uploaded.

About the formats

M4V

iTunes Video

M4V is Apple’s variant of MP4 used by iTunes and the Apple TV app. It plays on iPhone, iPad, Mac and Apple TV.

MKV

Matroska Video

MKV (Matroska) is a flexible open container that can hold several audio tracks, subtitles and chapters in one file. It is popular for movies and series.

Frequently asked questions

How do I convert M4V to MKV?

Click “Choose Files” and select your M4V file (or drag it onto the page). MKV is already selected as the output, so just click Convert and download your MKV file when it’s ready.

Will I lose quality converting M4V to MKV?

When the video inside your M4V file is compatible with MKV, it is copied without re-encoding, so there is no quality loss at all. Otherwise it is re-encoded at high quality. You can pick the quality yourself in Advanced settings.

Is it safe to convert M4V files here?

Yes. Conversion runs inside your own web browser, so your files are never uploaded to our servers or anyone else’s. Nobody can see them, and nothing is stored after you close the tab.

Is the M4V to MKV converter free?

Yes, it’s completely free. There’s no sign-up, no watermark and no limit on how many files you convert. Each file can be up to 1 GB.

Can I convert several M4V files at once?

Yes. Add as many M4V files as you like and convert them in one go, then download them one by one or together as a ZIP file.

Convert M4V to other formats

Convert other formats to MKV