Convert Windows Media WMV video into an MP4, on your device.
WMV, short for Windows Media Video, is Microsoft's own video format, the kind of file that came out of old Windows Movie Maker projects, corporate PowerPoint exports, and Windows PCs from years past. It plays fine in Windows Media Player, but almost nowhere else. Macs, iPhones, Android phones, browsers, and social platforms generally refuse it, which makes WMV a dead end the moment you step outside the Windows world. Converting to MP4 sets that footage free.
You use it by dropping a WMV file onto the page or clicking to choose one, then starting the conversion. The tool decodes the Windows Media video and audio, re-encodes them as H.264 and AAC, and gives you a standard MP4 to download. There is no upload and no account to create.
WMV relies on Microsoft's own codecs, which is exactly why non-Windows devices stumble on it. The conversion swaps those out for H.264 video and AAC audio, the pair that essentially every modern device understands. Because this is a genuine re-encode rather than a rename, expect the job to take some real processing time, with a tiny and usually invisible quality change that comes with any re-encode.
Convert whenever a WMV needs to leave a Windows machine, which covers most sharing situations. If the file will only ever be watched on a Windows PC in Windows Media Player, you can keep it as is. The trigger to convert is a Mac, a phone, an editor, or an upload form that will not open it.
Common reasons include getting an old Movie Maker or Windows-recorded clip onto an iPhone, sharing a WMV with a Mac user who cannot open it, feeding footage into an editor that has no Windows Media support, and uploading to a platform that only lists MP4. Offices that archived training or meeting videos as WMV years ago hit this constantly when they move off Windows.
The whole conversion runs inside your browser on your device, so the video never travels to a server and stays private. The only network request is the one-time roughly 32 MB media engine downloaded the first time you use the tool, which is then cached for future visits. Your device's available memory is the only genuine limit on how big a file you can process, because the encode happens locally on your own machine.
WMV uses Microsoft's proprietary codecs, which Apple devices do not include by default. Rather than hunt for a special player, converting to MP4 gives you a file that opens natively on Macs, iPhones, and iPads with no extra software.
Yes. Old Movie Maker exports are standard WMV and convert cleanly to MP4, which is a good way to rescue those projects for modern phones and cloud storage. The MP4 will play in places the original WMV never could.
Yes, the Windows Media audio track is re-encoded to AAC so it plays back normally in the MP4. If the original clip had no audio, the result stays silent, which is expected.
No. Some older WMV files carry Windows Media DRM that locks playback to a licensed machine, and that protection blocks re-encoding. Only unprotected WMV, which is the vast majority of personal footage, can be converted.
It depends on the clip's length and resolution and on your device's speed, because the re-encode runs on your own hardware. A short clip finishes quickly, while a long, high-resolution file takes proportionally longer.
No. The file is decoded and converted entirely in your browser and never sent to a server, so a private or corporate WMV stays on your device. The only thing fetched online is the one-time media engine, not your video.
Polished Pixels. All tools. About. Contact. Every tool runs in your browser and your files are never uploaded.