WEBM to WMV Converter

Convert a web WEBM into WMV so Windows Media Player and PowerPoint can play it. Free, in your browser, no signup.

Select WEBM file →

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Choose Files

Click or drag and drop to upload files

We support most file types including: MP4, MOV, WEBM, AVI, MP3, WAV, PNG, JPEG, GIF, MKV, PDF, FLAC, TIFF!

EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated June 2026

Windows Media Player does not open WEBM out of the box, and older Windows workflows and PowerPoint embeds expect WMV. Converting gives you a file that drops straight into those Microsoft tools. EchoWave re-encodes the VP8 or VP9 video and Opus audio inside your WEBM into Windows Media Video, free and right in your browser with no signup.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert WebM to WMV

1
Upload your WebM
Drag your WebM onto the converter or pick it from your device. Nothing to install.
2
Choose WMV and convert
Select WMV as the output and start. Free, with no sign-up and no watermark.
3
Download your WMV
Save the finished WMV, or open it in the editor to trim, crop, or resize it first.

Try it

Estimate your WMV

Pick a video bitrate and a length to see the WMV file size before you convert.

Video bitrate

Length5 min

1 min30 min

Estimated WMV size183MBSharp 1080p

An estimate. Real size varies with resolution, frame rate, and how much the picture moves.

The formats

WebM vs WMV

WebM

Open video built for the web

Type: Open web video container
Holds: VP8 or VP9 video with Vorbis or Opus audio
Typical size: Small at good quality
Plays on: Chrome, Firefox, Edge, and Android

Best for:Video embedded on web pages

WMV

Windows Media Video

Windows Media video, small and Windows-first

Type: Windows Media video
Holds: Windows Media video with WMA audio
Typical size: Small, built for Windows
Plays on: Windows Media Player and VLC

Best for:Older Windows video and slideshows

Will it lose quality?

When the codecs already match WMV, the converter can change the container without re-encoding, so the picture stays identical.
When the video has to be re-encoded for WMV, a high bitrate keeps it visually close to the WebM.
Converting cannot add detail the WebM never had. The output is at best as good as the source.

Use cases

What people use it for

Play anywhereMake a clip your device supports

Video editorsGet footage your software accepts

Web videoUse a format browsers play

CourseworkHand in a standard video file

SharingSend a clip people can open

Troubleshooting

If something looks off

The WMV will not play

Some players are picky about codecs. Try it in VLC, which opens almost anything, or convert again and let the converter re-encode the video.

The file got larger

A format change can shift the size, and re-encoding at a high bitrate adds overhead. Lower the bitrate or trim the clip for a smaller file.

Audio and video drift out of sync

Re-download the source and convert again. If a long recording drifts, splitting it into shorter pieces usually fixes the sync.

FAQ

WebM to WMV questions

Why will Windows Media Player not play my WEBM?

Windows Media Player does not include the codecs WEBM uses, so it either shows an error or plays no picture. WMV is Microsoft's own format, so converting your WEBM to WMV gives Windows Media Player a file it opens natively with nothing extra installed.

How do I convert WEBM to WMV?

Upload your WEBM, choose WMV as the output, and start the conversion. When it finishes, download the WMV or open it in the editor to trim or resize it first. No account and no software install are needed.

Can I embed the converted WEBM to WMV file in PowerPoint?

Yes. WMV is one of the formats PowerPoint embeds reliably on Windows, which is a common reason to convert from WEBM. Once converted, insert the WMV into your slide so the clip plays in the deck without a browser.

Will converting WEBM to WMV reduce the quality?

WEBM and WMV use different codecs, so the video is re-encoded rather than just rewrapped. A high bitrate keeps the WMV close to the source, and converting cannot add detail the WEBM never had, so the output is at best as good as the original.

Does the WEBM to WMV converter work on Mac as well as Windows?

Yes. It runs in any browser, so you can create a WMV on macOS, Chromebook, and Linux as well as Windows. There is nothing to download and no account to create, though WMV plays back best on Windows.

Is the WEBM to WMV converter free?

Yes. EchoWave converts WEBM to WMV with no signup, no file-count limit, no trial, and no watermark. Upload your video, convert it, and download the WMV from your browser.

Should I use WMV or MP4 for sharing?

WMV is best when the file stays inside Windows Media Player or older Windows software. If you need to upload the clip online or play it on a phone, convert your WEBM to MP4 instead, since MP4 has much wider support.