Convert WMV to MP4

WMV to MP4 converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.

WMV was built for Windows Media Player and never traveled well — Macs, phones, and browsers often can't play it. Converting WMV to MP4 re-encodes to H.264, usually shrinking the file and making it work everywhere. It's the standard rescue operation for old PowerPoint-embedded clips and screen recordings.

Conversions

Drop any file here or click to browse

All file types supported

About formats

WMV

WMV (Windows Media Video) is a video compression format developed by Microsoft as part of the Windows Media framework. WMV was designed for streaming over the internet and supports DRM copy protection. It is natively supported by Windows Media Player and remains common in corporate and Windows-centric video archives.

Developer: Microsoft
Initial release: 2003
Compression: Lossy
Color depth: up to 10-bit
Transparency: No
Animation: Yes

Best for

Windows-centric corporate video archives
Streaming video on legacy Windows systems
DRM-protected Windows Media content
Internal enterprise video distribution
Windows Media Player playback

Pros

+Good quality at low bitrates
+Native Windows Media Player support
+Supports DRM copy protection
+Designed for internet streaming

Cons

−Poor support on non-Windows platforms
−Proprietary Microsoft format
−Fewer modern editing tools support it
−Less efficient than H.264/HEVC

MP4

MP4 (MPEG-4 Part 14) is a digital multimedia container format standardized by the Moving Picture Experts Group (MPEG). It stores video, audio, subtitles, and still images in a single file and is the most widely used format for streaming and sharing video across the web, mobile devices, and living-room hardware. MP4 offers an excellent balance between compression efficiency and quality, typically using the H.264 or H.265 (HEVC) video codec together with AAC audio. Its near-universal support makes it the default choice for social media platforms, browsers, phones, and modern TVs.

Developer: ISO/IEC (MPEG)
Initial release: 2001
Compression: Lossy
Color depth: up to 12-bit HDR
Transparency: No
Animation: Yes

Best for

Sharing videos on social media
Streaming video over the web
Playback on phones and tablets
Storing H.264 or HEVC video
Distributing downloadable video clips

Pros

+Near-universal support across devices and browsers
+Excellent compression-to-quality ratio
+Supports subtitles, chapters, and metadata
+Hardware-accelerated decoding on most devices

Cons

−Patent-encumbered H.264/HEVC codecs
−Not ideal for lossless archival
−Editing streams can require re-muxing

How to convert WMV to MP4

1
Select WMV files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
2
Choose mp4 — or any other format you need as a result (more than 200 formats supported).
3
Let the file convert, then download your mp4 file right away.

WMV vs MP4

Property	WMV	MP4
Compression	Lossy	Lossy
Color depth	up to 10-bit	up to 12-bit HDR
Multi-track	Yes	Yes
DRM support	Yes	Yes
Open format	No	No

When to use WMV vs MP4

WMV

Windows-centric corporate video archives
Streaming video on legacy Windows systems
DRM-protected Windows Media content
Internal enterprise video distribution
Windows Media Player playback

MP4

Sharing videos on social media
Streaming video over the web
Playback on phones and tablets
Storing H.264 or HEVC video
Distributing downloadable video clips

Use cases for WMV → MP4

Windows-centric corporate video archives
Streaming video on legacy Windows systems
DRM-protected Windows Media content
Internal enterprise video distribution
Windows Media Player playback
Sharing videos on social media
Streaming video over the web
Playback on phones and tablets
Storing H.264 or HEVC video
Distributing downloadable video clips

Frequently Asked Questions

Is converting WMV to MP4 free?

Yes. This WMV → MP4 converter runs entirely in your browser and is completely free — no account, no credits, no watermark.

Which devices and platforms can I use to convert WMV to MP4?

Any modern device with a current web browser: Windows, macOS, Linux, Android, iPhone and iPad. There is nothing to install — the conversion happens locally.

Are my WMV files uploaded to a server?

No. Files never leave your device. The entire WMV → MP4 conversion runs locally in your browser, so your data stays private.

Can I convert multiple WMV files at once?

Yes — batch conversion is supported. Add as many WMV files as you like and convert them to MP4 in one pass, then download the results together.

What is the maximum file size?

There is no fixed server-side limit because the conversion happens in your browser. Practical limits depend on the available memory and CPU of your device.

Will converting WMV to MP4 reduce the quality?

Because both formats use lossy compression, the MP4 output will not bring back any quality that has already been lost in your WMV file. Avoid repeated re-encoding to keep the best quality.

Does MP4 support transparency?

No — MP4 has no alpha channel. Transparent areas of your WMV file will be filled with a solid background colour in the converted file.

How will the file size change after converting WMV to MP4?

Both formats use comparable compression, so the MP4 output will be similar in size to your WMV file — typically within 10–20% of each other.

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FREE

100% Free

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SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

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