WebM vs WMV: Which Should You Use?

Side-by-side comparison of WebM and WMV video formats — features, pros, cons, and conversion options.

Quick Answer

WebM is best for Web video embedding and HTML5 playback. WMV is best for Legacy Windows video and DRM-protected content.

Quick Verdict

WebM Best for Web video embedding and HTML5 playback

✓ Royalty-free
✓ Web-optimized
✓ Good compression
✗ Limited hardware support

Convert WebM to WMV →

WMV Best for Legacy Windows video and DRM-protected content

✓ DRM support
✓ Windows integration
✓ Reasonable compression
✗ Poor cross-platform support

Convert WMV to WebM →

Specs Comparison

Side-by-side technical comparison of WebM and WMV

Feature	WebM	WMV
Category	Video	Video
Year Introduced	2010	1999
MIME Type	video/webm	video/x-ms-wmv
Extensions	.webm	.wmv
Container	✓	✓
Codecs	VP8,VP9,AV1,Vorbis,Opus	WMV9,VC-1
Max Resolution	8K	1080p
Streaming	✓	✓
Subtitle Support	✓	✗

Pros & Cons

WebM

Pros

✓ Royalty-free
✓ Web-optimized
✓ Good compression

Cons

✗ Limited hardware support
✗ Not supported on all mobile devices
✗ Fewer editing tools

WMV

Pros

✓ DRM support
✓ Windows integration
✓ Reasonable compression

Cons

✗ Poor cross-platform support
✗ Proprietary
✗ Declining usage

When to Use Each

Choose WebM when...

You need files optimized for Web video embedding and HTML5 playback
Royalty-free
Web-optimized

Choose WMV when...

You need files optimized for Legacy Windows video and DRM-protected content
DRM support
Windows integration

How to Convert

Convert between WebM and WMV for free on ChangeThisFile

Convert WebM to WMV Server-side conversion — auto-deleted after processing Convert WMV to WebM Server-side conversion — auto-deleted after processing

Frequently Asked Questions

What's the difference between WebM and WMV?

WebM is best for Web video embedding and HTML5 playback, while WMV is best for Legacy Windows video and DRM-protected content. Both are video formats but they differ in compression, compatibility, and intended use cases.

Is WebM or WMV better for video?

It depends on your use case. WebM is better for Web video embedding and HTML5 playback. WMV is better for Legacy Windows video and DRM-protected content. Consider your specific requirements when choosing between them.

How do I convert WebM to WMV?

Go to the WebM to WMV converter on ChangeThisFile. Upload your file and the conversion processes on the server, then auto-deletes. It's free with no signup required.

Can I convert WMV to WebM?

Yes. ChangeThisFile supports WMV to WebM conversion. Upload your file for server-side conversion — files are auto-deleted after processing.

Which is smaller, WebM or WMV?

File size varies depending on the content, compression method, and quality settings of each format. In general, lossy formats produce smaller files than lossless ones. Test with your specific files to compare actual sizes.

Does WebM support subtitle support?

Yes, WebM supports subtitle support, but WMV does not. This may be important depending on your use case.

Is WebM or WMV free to use?

Both WebM and WMV are supported file formats that are free to use. You can convert between them for free on ChangeThisFile — server-side conversions are free with no signup required.

Which format is newer, WebM or WMV?

WebM is newer — it was introduced in 2010, while WMV dates back to 1999. Newer formats often offer better compression and features, but older formats tend to have wider compatibility.