Convert WMV to MP4 — Free Online Converter
Convert WMV files to MP4 format instantly. Free online converter for Windows Media videos. Works on all devices.
Conversion settings — add a file to adjust
About WMV files
WMV (Windows Media Video) is Microsoft's older video format. It was common for Windows Movie Maker projects, training videos and downloads from the 2000s.
Macs, iPhones, Android phones and most web platforms do not play WMV without extra software. MP4 with H.264 plays on all of them.
How we convert WMV to MP4
- Always re-encoded
- WMV cannot be copied into MP4, so the video is re-encoded to H.264 High profile at CRF 23.
- Audio
- Windows Media Audio is converted to AAC at 192 kbps.
- Resolution
- Kept as in the WMV. We never upscale small videos.
- Quality presets
- High (CRF 18), Medium (CRF 23) and Low (CRF 28) let you trade size for detail.
Common problems and fixes
The WMV will not open on a Mac.
Convert it to MP4 here, then open the MP4. macOS plays H.264 MP4 without any add-on.
The picture looks blocky in the MP4.
Old WMV files are often low bitrate, and the MP4 cannot restore lost detail. Choose the High preset so no more detail is lost.
The file is protected and fails to convert.
Some purchased or rented WMV files use copy protection. We cannot convert protected files, only normal ones.
About WMV to MP4 Conversion
WMV (Windows Media Video) was Microsoft's answer to video compression in the early 2000s, but the format has become increasingly problematic in today's cross-platform world. Mac users can't play WMV natively. Smartphones struggle with the format. Even modern Windows PCs sometimes require codec packs. Converting WMV to MP4 modernizes your video library for universal playback.
Our WMV to MP4 converter transforms legacy Windows Media files into the universally accepted MP4 format. The process preserves video quality while dramatically improving compatibility. Most devices that struggle with WMV play MP4 flawlessly without any additional software.
Why Convert WMV to MP4?
WMV's platform limitations create constant headaches. Videos that play fine on older Windows PCs fail on MacBooks, iPhones, Android phones, and smart TVs. Sharing WMV files means recipients often can't view them. The format's age shows in these daily frustrations.
MP4 eliminates compatibility concerns entirely. It's the lingua franca of digital video—every modern device and platform supports it natively. No codec packs, no player apps, no workarounds needed.
The conversion also benefits video quality. MP4's H.264 codec achieves better quality per byte than WMV's older compression. Your converted files can actually look better while being smaller, especially for older WMV files encoded at low bitrates.