WEBM to WMV Converter

Convert WEBM files to WMV online, for free, with nothing to install.

To convert WEBM to WMV, select or drop your .webm file above, check that WMV is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.

What is a WEBM file?

WEBM – WebM video. WebM is a free video format made for the web: VP8 or VP9 pictures with Vorbis or Opus sound, played by every modern browser. Converting makes a new file: the video is decoded and encoded again, so converting from a format that lost detail never brings it back.

WEBM Converter →

What is a WMV file?

WMV – Windows Media Video. WMV is Windows Media Video, Microsoft's video format for Windows Media Player and old Windows programs. Converting makes a new file: the video is decoded and encoded again, so converting from a format that lost detail never brings it back.

WMV Converter →

How to convert WEBM to WMV

  1. Click Select File, or drop your .webm files anywhere on this page. You can add several at once.
  2. Check that WMV is chosen as the output format. On this page it is picked for you.
  3. Click Convert. When a file has to go to our server, the button says Upload and convert instead.
  4. Click Download next to each file when it's done.

WEBM vs WMV: how they compare

WEBMWMV
LayoutMoving pictures and soundMoving pictures and sound
EditableIn video editorsIn video editors
Created byGoogle, 2010Microsoft, 1999
Best forVideo on web pagesOld Windows software

Good to know

  • The video is decoded and written as a WMV file by ffmpeg: Windows Media pictures and sound, at a fixed quality. The first picture track and the first sound track are kept; subtitles and other tracks are left out.
  • Pictures wider than 1080p are made 1920 pixels wide. Interlaced video (DVD, TV, camcorders) is deinterlaced.
  • The server converts about as much video as it can in 10 minutes: a long or large video is refused at once with how long it would take, and can be cut shorter first.

Frequently asked questions

Is converting WEBM to WMV free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my WEBM files uploaded anywhere?

This conversion runs on our server, because converting video needs ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.

How large can the WEBM file be?

Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.

Will the WMV look the same as the WEBM?

The picture and sound are decoded and encoded again at a fixed quality, so the WMV looks and sounds very close to the WEBM but is not bit for bit the same. Sizes up to 1080p are kept; the first picture track and the first sound track are kept.

Can I convert several WEBM files at once?

Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.

How long does converting WEBM to WMV take?

In our tests a one-minute 1080p video at 8 Mbit/s took about 16 seconds to become a WMV file. Time grows with length and picture size and shrinks for smaller pictures; a video that would need more than about 8 minutes is refused at once, with the time it would take.

Convert WEBM to other formats

Convert other videos to WMV

All video formats

Updated