WMV vs MP4

WMV (Windows Media Video) is Microsoft’s 2000s video format, still found in older Windows files and legacy training videos. MP4 has fully replaced WMV - better compression and support on every modern device. Keep WMV only for legacy Windows systems.

video format comparison

WMV.wmv

WMV (Windows Media Video) is Microsoft’s 2000s video format, still found in older Windows files and legacy training videos.

Pros

Still supported on Windows machines
Familiar in legacy corporate and educational video
Simple, small files for its era

Cons

Obsolete - replaced by MP4 everywhere
Not supported on macOS, modern browsers, or most mobile devices
Uses dated codecs with poor compression

MP4.mp4

MP4 is the modern universal container - far smaller files, supported everywhere.

Pros

Plays on every modern device and OS
H.264/HEVC compress much better than WMV codecs
The standard for web and distribution

Cons

Legacy WMV content requires re-encoding to move
Multi-subtitle support is limited compared to MKV
Older WMV files may contain codecs no modern encoder accepts

Which should you use?

WMV: Choose WMV only for legacy Windows systems that cannot play MP4 - increasingly rare.

MP4: Choose MP4 for everything else: it plays anywhere and compresses better.

Convert between WMV and MP4

Convert WMV to MP4 →Convert MP4 to WMV →

Free, runs in your browser - files are never uploaded.

Quick Answer

WMV and MP4 are both video formats with different trade-offs. MP4 has fully replaced WMV - better compression and support on every modern device. Keep WMV only for legacy Windows systems. Choose WMV only for legacy Windows systems that cannot play MP4 - increasingly rare. Choose MP4 for everything else: it plays anywhere and compresses better.

Key Facts

WMV: WMV (Windows Media Video) is Microsoft’s 2000s video format, still found in older Windows files and legacy training videos.
MP4: MP4 is the modern universal container - far smaller files, supported everywhere.
WMV strengths: Still supported on Windows machines; Familiar in legacy corporate and educational video; Simple, small files for its era.
MP4 strengths: Plays on every modern device and OS; H.264/HEVC compress much better than WMV codecs; The standard for web and distribution.
WMV trade-offs: Obsolete - replaced by MP4 everywhere; Not supported on macOS, modern browsers, or most mobile devices; Uses dated codecs with poor compression.
MP4 trade-offs: Legacy WMV content requires re-encoding to move; Multi-subtitle support is limited compared to MKV; Older WMV files may contain codecs no modern encoder accepts.
WMV to MP4 is a lossy re-encode because the WMV codecs are not MP4-compatible; MP4 to WMV is an efficiency downgrade.
MP4 has fully replaced WMV - better compression and support on every modern device. Keep WMV only for legacy Windows systems.

Frequently Asked Questions

Which is better, WMV or MP4?

MP4 has fully replaced WMV - better compression and support on every modern device. Keep WMV only for legacy Windows systems. Choose WMV only for legacy Windows systems that cannot play MP4 - increasingly rare. Choose MP4 for everything else: it plays anywhere and compresses better.

What are the main differences between WMV and MP4?

WMV (Windows Media Video) is Microsoft’s 2000s video format, still found in older Windows files and legacy training videos. MP4 is the modern universal container - far smaller files, supported everywhere.

Can I convert WMV to MP4 without quality loss?

WMV to MP4 is a lossy re-encode because the WMV codecs are not MP4-compatible; MP4 to WMV is an efficiency downgrade. You can convert either direction with the free tools linked on this page.

What happens to my file when I convert WMV to MP4?

WMV to MP4 is a lossy re-encode because the WMV codecs are not MP4-compatible; MP4 to WMV is an efficiency downgrade. Your original file is never modified - the converter downloads a new file.