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ConvertAnyVideo

MTS to WebM Converter

Convert MTS videos to WebM 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 MTS to WebM

  1. Add your MTS files

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

  2. WebM is selected

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

  3. Convert and download

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

About the formats

MTS

AVCHD Video

MTS (AVCHD) is recorded by many Sony and Panasonic camcorders. It is high quality but not supported by many players and phones.

WebM

WebM Video

WebM is an open, royalty-free format made for the web. It uses VP8/VP9 video with Opus or Vorbis audio and plays directly in modern browsers.

Frequently asked questions

How do I convert MTS to WebM?

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

Will I lose quality converting MTS to WebM?

When the video inside your MTS file is compatible with WebM, 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 MTS 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 MTS to WebM 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 MTS files at once?

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

Convert MTS to other formats

Convert other formats to WebM