What is WMV?
Windows Media Video
WMV is Microsoft's proprietary video format, designed for efficient streaming and playback on Windows. It delivers good compression but has limited support on non-Microsoft platforms.
History of WMV
WMV (Windows Media Video) is Microsoft's video format, dating back to 1999. It powered Windows Media Player and the early Microsoft streaming ecosystem. Today, with the rise of MP4 and WebM on the web, WMV has largely faded outside of legacy Microsoft workflows.
Technical specs
- Format name
- Windows Media Video
- File extension
- .wmv
- MIME type
- video/x-ms-wmv
- Category
- Video
- Compression
- Lossy compression
When to use WMV
Reach for WMV when you need windows media player playback, windows-based video sharing, streaming on older microsoft platforms. It excels at these scenarios because strong compression for windows and native on windows platforms.
Pros
- +Strong compression for Windows
- +Native on Windows platforms
- +Built-in DRM support
When to avoid WMV
Avoid WMV when poor support on macos, ios, linux, and proprietary format. In those cases, look at the alternatives below.
Cons
- −Poor support on macOS, iOS, Linux
- −Proprietary format
- −Falling out of favor for modern web
Common uses for WMV
- Windows Media Player playback
- Windows-based video sharing
- Streaming on older Microsoft platforms
Alternatives to WMV
WMV is essentially legacy. Switch to MP4 for any modern use case.
WMV — Frequently Asked Questions
Is WMV still used in 2026?
Is WMV still used in 2026?
WMV is increasingly rare outside of legacy Windows workflows. It's still functional but most modern toolchains prefer MP4 or MKV.
Can I open a WMV file on my phone?
Can I open a WMV file on my phone?
Phones generally can't play WMV. Convert to MP4 for mobile-friendly playback.
Why is my WMV file so different in size from other files?
Why is my WMV file so different in size from other files?
WMV file sizes depend on encoder settings (bitrate, resolution, quality). For smaller files, re-encode at a lower bitrate or convert to a more compressed format.
Can I convert WMV to another format for free?
Can I convert WMV to another format for free?
Yes — Zen Convert converts WMV files to every other video format we support, for free, in your browser. No signup, no watermark.
Is WMV open-source?
Is WMV open-source?
WMV is Microsoft's proprietary format. Patents apply.