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Convert WMV to MP4 Online — Free WMV to MP4 Converter

Turn old Windows Media videos into universal MP4 files. No software. Works on any device.

Drop your file here

MP4, MOV, AVI, MKV, WebM

Understand first

Convert WMV to MP4 — your Windows-era videos, playable everywhere

WMV (Windows Media Video) was everywhere in the 2000s: Movie Maker exports, camcorder software, corporate presentations. Today, phones and Macs often refuse to open it. Klipa's WMV to MP4 converter re-encodes those files into standard MP4 (H.264 + AAC) — the format that plays on every device made this decade.

Everything happens online: no codec packs, no desktop software from a dubious download site. Once converted, shrink the file for messaging, trim the good part, or convert other formats with the main converter.

How it works

How to convert WMV to MP4

Step 1

Upload your WMV file

Drag and drop your WMV video — old family footage, Movie Maker projects, corporate archives from the Windows era. Large files are accepted.

Step 2

The conversion runs in the cloud

Our server re-encodes the Windows Media stream to H.264 + AAC, the combination every modern device understands. You don't install anything and your computer does none of the work.

Step 3

Save your universal MP4

Your video now plays on iPhone, Android, Mac, smart TVs and in every editor. Compress it to share by email, or add subtitles before publishing.

Why Klipa

Why convert WMV to MP4?

Escape the Windows-only trap

WMV was built for Windows Media Player. MP4 plays on every phone, tablet, TV and operating system.

Rescue old archives

Family videos and Movie Maker projects from the 2000s become watchable and shareable again.

Ready for editing

Modern editors handle MP4 far better than WMV. Convert first, edit without headaches after.

Clean, no watermark

The converter returns your own video, full length, without any logo stamped on it, whatever your plan.

Real cases

WMV TO MP4: USE CASES

Family archives

Videos captured with old camcorders or saved from Windows PCs become playable on today's phones and TVs — and safe to back up in a modern format.

Movie Maker projects

Films exported from Windows Movie Maker live again: convert them to MP4 and re-edit them in any modern editor.

Old work presentations

Corporate and training videos from the WMV era can be shared with colleagues on Mac, mobile, or embedded in modern slide decks.

Continue with

Related Tools

PrepareFetch the video and get the right format
EditCut, clean the sound and the silences
TransformTurn it into short clips, ready to publish
EnrichSubtitles, translation and transcription
Frequently asked

WMV to MP4 — FAQ

Is the WMV to MP4 conversion free?

Your first try is free, without an account.

Will I lose quality?

WMV must be re-encoded (its codec isn't MP4-compatible), but we use quality settings where the difference is not visible in normal viewing. The output will never look worse than the source.

Why won't my WMV play on my phone or Mac?

WMV uses Microsoft's Windows Media codecs, which most non-Windows devices never supported. Converting to MP4 (H.264) solves it permanently.

Is there a size or length limit?

Files can be up to 2 GB. Pro and Studio support videos up to 2 hours.

Does the sound stay in sync?

Yes. The audio track is converted along with the video in the same pass, so synchronization is preserved.

Can I convert MP4 back to WMV?

No — we deliberately target modern formats (MP4, MOV, WebM, MKV, AVI). There is no good reason to produce new WMV files today.

Is my file kept on your servers?

No. Files are deleted automatically after processing.

Your turn

Convert your WMV to MP4 now

Fast, first try with no signup.

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In closing

From WMV to MP4 — old videos, new life

Don't let a discontinued format hold your memories hostage. Klipa converts WMV to universal MP4 in minutes, online and watermark-free. Then use the compressor, the cutter or AI subtitles to get them ready for today's platforms.

Klipa AI