Convert WMV to WEBM

Convert WMV files to WEBM locally, completely free and with maximum privacy.

Drag and drop your files here

or click to browse local files (large files supported, limited only by browser RAM)

Upload Files

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How to convert WMV to WEBM

  1. Drop your .wmv files above, or click Upload Files. You can add many files at once.
  2. WEBM is already selected as the output. Open the settings (gear icon) to fine-tune the result.
  3. Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
  4. Download your .webm files as soon as each one finishes.

What to know about WMV to WEBM conversion

  • The video is re-encoded to VP8 video and Opus audio so it plays wherever WEBM is supported, and odd frame sizes are adjusted automatically.
  • You can change the resolution, frame rate, playback speed and quality (CRF) before converting.

WMV vs WEBM

FeatureWMV (Windows Media Video)WEBM (WebM Video Container)
Codecs used by PureConverterWMV2 video and WMA audioVP8 video and Opus audio
Best forWindows Media Player and older Windows PCsweb video with open, royalty-free codecs
Opens inWindows Media Player, VLC, mpv and most media playersall modern browsers and VLC

WMV (Windows Media Video): A video container and codec family developed by Microsoft for Windows Media Player.

WEBM (WebM Video Container): An open, royalty-free media file format designed for sharing video content directly on HTML5 web pages.

Conversion options

  • Resolution: original, 1080p, 720p, 480p or 360p
  • Frame rate and playback speed (0.5× to 2×)
  • Quality presets or a custom CRF value, and lossless mode
  • Audio bitrate, sample rate and channels

Frequently asked questions

Is it safe to convert WMV to WEBM here?

Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.

Is there a file size limit?

There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.

Can I convert several WMV files at once?

Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.

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