How to Convert WMV to MP4 Online
Follow these three simple steps to convert WMV to MP4. No software installation required. Free and secure.
Select a WMV Video
Choose a WMV recording, Windows Media export, or archived video from your device.
Choose Video and Audio Settings
Keep the original resolution and frame rate or choose new values, then keep the automatic audio settings or select a sample rate and mono or stereo output.
Convert and Download
Start the conversion, review the original and output file sizes, and download the completed MP4 video.
How Does the WMV to MP4 Converter Work?
The CompressFly WMV to MP4 converter decodes supported Windows Media video and audio, re-encodes the picture as H.264 and available audio as AAC, and creates an MP4 file. The conversion replaces the legacy WMV codecs rather than only changing the container name.
Conversion runs directly in your browser. Your WMV video is not uploaded to a server, and the completed MP4 file downloads from the browser to your device.
What "directly in your browser" means
- Your WMV video is not uploaded to a server.
- Video conversion runs locally on your device.
- The completed MP4 video downloads directly from your browser.
When to Convert WMV to MP4
Convert WMV to MP4 when a Windows Media file needs to move into a current device, browser, editor, or sharing workflow.
Move Beyond Windows Media
Create an MP4 copy of an older WMV recording for playback outside a legacy Windows-oriented application.
Prepare WMV for Upload
Convert WMV before adding the video to a website, social platform, online editor, or sharing service that requests MP4.
Make a Cross-Device Copy
Download an H.264 MP4 version for current phones, tablets, televisions, browsers, and media players.
Related Video Tools
WMV to MP4 Converter FAQ
How do I convert WMV to MP4 online?
Use this online WMV to MP4 converter in three steps: 1. Select a WMV video from your device. 2. Keep or change the available video and audio settings. 3. Start the conversion and download the completed MP4 video.
What happens when I convert WMV to MP4?
Supported Windows Media streams are decoded and re-encoded as H.264 video with available AAC audio inside a new MP4 container.
Why convert WMV to MP4?
WMV is associated with older Windows Media workflows. An MP4 copy is generally easier to play, edit, upload, and share across current operating systems and devices.
Can I change the video resolution and frame rate?
Yes. Keep the source resolution and frame rate or select an available output resolution and frame rate before conversion.
Will converting WMV to MP4 make the file smaller?
Not necessarily. The output size depends on the source video, selected resolution, frame rate, audio settings, duration, and visual content. Use the Video Compressor when reducing file size is the main goal.
Is the WMV to MP4 converter free?
Yes. Convert WMV to MP4 for free with no registration or credit card required.
Is there a file size limit, and is my video uploaded?
Your video is processed locally in your browser and is not uploaded to a server, so there is no server upload limit. The practical limit depends on your device's available memory and processing power, as well as the video's duration and resolution.