WMV – Windows Media Video
WMV is Microsoft's Windows Media video format. It plays in Windows apps but has little support on phones and browsers.
More WMV conversionsDrop your WMV files here
or click to choose WMV files · up to 95MB each
How to convert WMV to MP4
- Choose your files. Click Select File or drag your WMV files into the upload box. You can add many at once.
- Pick the settings. MP4 is already selected as the output format. The conversion starts as soon as a file is added.
- Download. Each file appears in the list when it is ready. Download them one by one, or all together with Download all.
Why convert WMV to MP4?
WMV is an old Windows video format that phones, Macs, TVs and websites often cannot play. MP4 plays everywhere, so converting WMV to MP4 makes old home videos and recordings easy to watch and share.
When to keep the WMV
There is little reason to keep WMV once you have the MP4, unless very old Windows software needs it.
Tips for the best result
- The video is converted to H.264 and the sound to AAC, the most compatible combination.
- The MP4 is usually smaller than the WMV.
- The MP4 is prepared for fast start, so it begins playing online before it has fully loaded.
Common problems and fixes
- The file will not convert.
- WMV files with DRM protection, such as old purchased movies, cannot be converted.
- The picture is blurry.
- Old WMV files often have a low resolution. Converting cannot add detail that is not there.
MP4 – MPEG-4 Part 14
MP4 is the most widely supported video container. It usually holds H.264 or H.265 video with AAC audio and plays on nearly every phone, computer, TV and browser.
More MP4 conversionsConverting WMV to MP4
- Re-encoded with widely compatible codecs (H.264/AAC for MP4, MOV, MKV; VP9/Opus for WebM).
Frequently asked questions
Can I play WMV on a Mac?
Not without extra software. Converting to MP4 is the easiest solution.
Does WMV to MP4 lose quality?
The video is re-encoded at high quality, so you should not see a difference.
How do I convert WMV to MP4?
Click Select File or drop your WMV file onto the upload box. The converted MP4 appears in the list below with a download button. You can add many files at once and download them together as a ZIP.
Is it really free?
Yes. There is no sign-up and no watermark. To keep the service available for everyone there is a 95MB limit per file and a cap on how many files one connection can process in a short period.
Are my files stored?
Your upload is used only to make the converted file. Images are processed in memory; other files are written to a private temporary folder that is deleted as soon as the conversion finishes. Nothing is kept after the result has been sent back.
Will quality drop?
For images, a little, by design: the image is re-encoded at the Quality you choose (default 75%). Audio and video are re-encoded with high-quality settings; documents keep their text and layout as far as the target format allows. Converting never restores detail that is already missing from the original.
How this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.