WMV to MP4 Converter
Windows Media Video still appears in older meeting recordings. Convert WMV to MP4 in your browser so Mac and phone users can play the file — without uploading internal meetings.
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Drop your WMV file here or
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- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
Conversion runs in your browser. Files are not uploaded to Format Convertly servers.
Processed on your device
No conversion file stored on our servers
Conversion Settings
Customize the output to match your needs.
Convert Quality
92%Output
Output options for this format are applied automatically during browser conversion. Drop your file above to begin.
Advanced settings
Additional Options
Quality or bitrate forces a re-encode. Width/FPS apply only when creating GIF or animated WebP.
How to Convert WMV to MP4
Open the WMV → MP4 converter
Open the WMV to MP4 converter on Format Convertly.
Add your WMV file
Add the WMV training or archive clip in the browser.
Download MP4
Convert and download MP4 for modern playback.
Why Convert WMV to MP4?
Private by design
WMV → MP4 runs in your browser. Files are not uploaded to a remote conversion queue.
Ready for the next step
Convert when a site, editor, or teammate expects MP4 instead of WMV.
Practical quality
MP4: lossy (codec-dependent). Lossy targets trade size for speed — preview when it matters.
Wide compatibility
WMV is commonly used for Legacy corporate video libraries and Older Windows screen recordings.
WMV vs MP4
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | WMV | MP4 |
|---|---|---|
| Kind | video container | multimedia container |
| Compression | lossy (Windows Media codecs) | lossy (codec-dependent) |
| Lossy / lossless | Typically lossy | Typically lossy |
| Transparency | Not supported / N/A | Not supported / N/A |
| Best for | Legacy corporate video libraries; Older Windows screen recordings | Social uploads; Website video |
| Typical size | Moderate; usually larger than a well-encoded MP4 for the same quality | Large vs audio; efficient vs uncompressed video |
| Browser / web support | Not reliable in HTML5 — convert to MP4 or WebM | Excellent HTML5 video support |
| Compatibility | Best on legacy Windows; Mac, iOS, and web viewers usually need an MP4 derivative for reliable playback | The default video container for phones, social platforms, smart TVs, and HTML5 players — safest modern delivery choice |
Choose WMV when…
- Legacy corporate video libraries
- Older Windows screen recordings
- Archives being modernized
- Internal training conversions
Choose MP4 when…
- Social uploads
- Website video
- Phone playback
- Client delivery from editors
What happens to video quality?
Both WMV and MP4 are typically lossy. A second encode can add generation loss — preview when fidelity matters. MP4 is a container. Video or audio quality depends on the codec packed inside, not only the file extension. Changing WMV to MP4 re-encodes the media in the browser. It is not a lossless remux unless both sides share the same codec and container. WMV: WMV compression: lossy (Windows Media codecs). Lossy encoding discards some information to shrink files — re-saving repeatedly can accumulate artifacts. Typical size profile: Moderate; usually larger than a well-encoded MP4 for the same quality. Quality note: Varies by bitrate; older WMV often looks dated next to H.264 MP4 MP4: MP4 itself does not define visual quality — H.264/H.265/AV1 and audio bitrates do. Re-encoding can reduce quality; remuxing keeps bitstreams when formats allow.
Tip
Corporate training libraries often convert in batches — spot-check audio on each template.
Does WMV to MP4 reduce quality?
MP4 is typically lossy (lossy (codec-dependent)). Use a higher bitrate when fidelity matters, and keep the WMV master for archival.
MP4 format guide →Should I keep the original WMV?
Yes when you may need to re-encode later. WMV: WMV shows up in older corporate training libraries and Windows recordings. Convert to MP4 so Mac, phone, and web viewers do not need legacy codecs.
WMV format guide →WMV · MP4
Related converters WMV
Related converters MP4
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting WMV to MP4 reduce quality?
It can — both sides are typically lossy. A careful encode may look similar; repeated re-encodes cause generational loss. Prefer converting once from the best master you have.
Can you recover quality after converting?
Not from a lossy output alone. Return to the original master (or a better source). Converting to a lossless format does not resurrect discarded detail.
What is generational loss?
Damage that stacks when you decode and lossy-encode the same file over and over (for example JPG→edit→JPG). Edit from masters and export delivery formats once.
Where can I learn more about conversion quality?
Browse Format Convertly’s Quality guides for topics like whether conversion reduces quality, JPG↔PNG myths, WebP/MP3/MP4 tradeoffs, recovery limits, and generational loss — each links to the right converter.
Can I convert DRM-protected WMV?
No. Protected corporate titles cannot be freely converted. Use unprotected files you have rights to process.
Is browser conversion secure for meetings?
On Format Convertly, yes — the recording is not uploaded. That is the opposite of classic online converters that store temporary server copies.
What is a WMV file?
WMV is Windows Media Video — a Microsoft-era video format often in ASF containers. WMV shows up in older corporate training libraries and Windows recordings. Convert to MP4 so Mac, phone, and web viewers do not need legacy codecs.
What is a MP4 file?
MP4 is a ubiquitous multimedia container usually holding H.264/H.265 video and AAC audio. MP4 is the safest video delivery format for phones, web, and social platforms. Shoot or edit in whatever your camera prefers, then provide an MP4 derivative for sharing.
Ready to Convert Your Files?
WMV to MP4 privately in your browser.