OpenAnyFile
Works
Viewing, inspecting and verifying. You get a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside. File details, exact byte size and the detected signature are always shown.
How to open a .wmv file
WMV files come from Windows Movie Maker, old screencasts, and the usual advice — buy the software that made it — is rarely what you need just to look inside one. This page covers what the format is and how to open it in a browser tab.
What is a .wmv file?
Windows Media Video is a video format developed by Microsoft, first appearing in 1999. It is normally produced by Windows Movie Maker, old screencasts.
Uses the ASF container. Many .wmv files carry Windows DRM licences that are now unobtainable because the licence servers were retired.
| Full name | Windows Media Video |
|---|---|
| File category | Video |
| MIME type | video/x-ms-wmv |
| Magic bytes (file signature) | 30 26 B2 75 8E 66 CF 11 |
| Developer | Microsoft |
| Introduced | 1999 |
| Usually created by | Windows Movie Maker, old screencasts |
| OpenAnyFile engine | HTML5 video player |
| Opens without upload | Yes — parsed locally in your browser |
Open a .wmv file in your browser
OpenAnyFile routes .wmv to its HTML5 video player, which plays a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .wmv file onto the drop zone, click to browse for it, or paste it with Ctrl+V.
- The extension is detected and the file is handed to the HTML5 video player.
- Your WMV opens on its own viewer page: a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside.
- Use fullscreen for a closer look, or download the file back out unchanged. Works the same on Windows, macOS, Linux, Android and iOS, because it is just a web page.
What you can and cannot do with it here
Does not work
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
No upload, and here is why that matters for {E}
Handing a .wmv file to a random conversion site means handing over a copy you cannot get back. OpenAnyFile parses the file locally instead — the same way special software reads it off your disk, except the reader happens to be a web page. Nothing is transmitted, so there is nothing to leak, log or subpoena. It also means it keeps working with your Wi-Fi switched off.
Frequently asked questions about WMV files
Can I open a .wmv file without installing special software?
Yes. OpenAnyFile's HTML5 video player runs in your browser, so you can read a WMV file with nothing installed. You get a full player with scrubbing, volume and fullscreen — provided your browser has a codec for the stream inside. For full editing you still need the original application — this is a viewer, not an editor.
How can I check a file really is a WMV file?
Look at the first bytes rather than the extension. A genuine WMV begins with 30 26 B2 75 8E 66 CF 11. Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .wmv by mistake is easy to spot.
Is it safe to open a WMV file online?
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
What is a .wmv file, exactly?
Windows Media Video — a video/x-ms-wmv format created by Microsoft since 1999. Uses the ASF container. Many .wmv files carry Windows DRM licences that are now unobtainable because the licence servers were retired.
Does the same viewer handle formats related to WMV?
Yes — the same engine also opens .mp4, .avi, .mkv, so you can compare related files without switching tools.
Related formats
These open with the same engine, so if you have one of these sitting next to your .wmv file, it will open too: