Convert MKV to WMV Online Free

Convert Matroska MKV video to WMV format for Windows Media Player and legacy Windows compatibility. ChangeThisFile uses FFmpeg on secure servers to convert your file quickly without any software installation.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts Matroska to WMV using FFmpeg, a professional-grade multimedia framework, to transcode Matroska files to WMV format with optimized codec settings and quality preservation. Free with no signup required. Files are encrypted during transfer and automatically deleted from our servers after conversion.

Free No signup required Encrypted transfer · Auto-deleted Under 2 minutes Updated March 2026

Convert Matroska to WMV

Drop your Matroska file here to convert it instantly

Drag & drop your .mkv file here, or click to browse

Convert to WMV instantly

Matroska vs WMV: Format Comparison

Key differences between the two formats

Feature	MKV (Matroska)	WMV
Full Name	Matroska Video	Windows Media Video
Developer	Open source	Microsoft
License	Open/free	Proprietary
Video Codec	H.264, H.265, VP9, AV1	WMV9 / VC-1
Audio Codec	AAC, FLAC, AC-3, Vorbis	WMA, WMA Pro
Windows Native	Requires codec or VLC	Yes, plays in Windows Media Player
Subtitle Support	Extensive (SRT, ASS, PGS)	Very limited
File Size	Efficient with modern codecs	Moderate

When to Convert

Common scenarios where this conversion is useful

Windows Media Player Playback

Convert MKV downloads to WMV so they play natively in Windows Media Player on older Windows machines without needing codec packs or VLC.

Legacy Windows Software

Supply WMV files to older Windows applications, kiosks, or embedded systems that support WMV but not modern MKV containers.

Corporate Intranet Video Sharing

Share video content over corporate Windows networks in WMV format, which Windows systems handle without additional software installation.

Windows Presentation Embedding

Embed WMV video in older Microsoft Office presentations that don't support MKV playback.

Windows DVD Authoring

Convert MKV source files to WMV for use with Windows DVD Maker, which works reliably with Windows-native video formats.

Who Uses This Conversion

Tailored guidance for different workflows

Content Creators

Convert Matroska footage to WMV for uploading to YouTube, TikTok, or social media platforms
Transform Matroska screen recordings to WMV for sharing in blog posts or tutorials

Choose WMV at 1080p or higher for the best quality-to-size ratio on social platforms

Preview the converted WMV file before uploading to ensure audio sync is maintained

Video Editors

Convert Matroska raw footage to WMV for importing into editing software like Premiere or DaVinci Resolve
Transform Matroska project exports to WMV for client delivery or final distribution

Maintain the original resolution and frame rate during Matroska to WMV conversion to avoid quality loss

Use a high bitrate when converting to WMV if the footage will undergo further editing

Social Media Managers

Convert Matroska brand videos to WMV to meet platform-specific format requirements
Transform Matroska ad creatives to WMV for cross-platform publishing campaigns

Check each platform's recommended WMV specs (resolution, bitrate, duration) before uploading

Keep the Matroska original archived for future re-exports at different resolutions

How to Convert Matroska to WMV

1

Upload Your MKV File

Drag your Matroska MKV or click to browse and select it. Your file is transmitted over an encrypted HTTPS connection to our conversion servers.
2

Convert MKV to WMV with FFmpeg

FFmpeg re-encodes your MKV video using VC-1 (WMV9) encoding with WMA audio, producing a WMV file fully compatible with Windows Media Player.
3

Download the WMV File

Your WMV is ready for download once conversion completes. The original MKV is automatically and permanently deleted from our servers.

Frequently Asked Questions

Why convert MKV to WMV?

WMV plays natively in Windows Media Player without codec packs or third-party software. It's ideal for Windows environments where MKV playback requires VLC or codec installation.

Do I need to install anything to do this conversion?

No. ChangeThisFile runs in your browser and converts the file on our servers. No plugins, codec packs, or software downloads needed.

Will MKV chapters or chapters be preserved?

MKV chapter information is not preserved in the WMV output. The video content itself is fully converted, but container-level metadata like chapters is dropped.

What about multiple audio tracks in the MKV?

Only the primary audio track is included in the WMV output. WMV does not support multiple audio tracks the way MKV does.

Is there a quality difference between MKV and WMV?

Converting from H.264/H.265 in MKV to VC-1 in WMV involves re-encoding, which introduces some quality loss. ChangeThisFile uses FFmpeg's best quality settings to minimize this.

What's the maximum file size?

25MB is the free tier max (500MB on Pro)imum upload size. For larger MKV files, trim or downscale the video before uploading.

Is my file safe?

Your MKV file is encrypted in transit (HTTPS) and deleted automatically from our servers immediately after your download. We do not retain any content.

Can I play WMV on Mac?

WMV playback on Mac requires VLC or Perian. It is a Windows-native format. If Mac compatibility is needed, convert to MP4 instead.

Does WMV support HD?

Yes. WMV using VC-1 encoding supports HD up to 1080p. Output resolution matches your source MKV.

Is the tool free?

Yes. ChangeThisFile is free with no watermarks, no subscriptions, and no signup required.

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Need to convert programmatically?

Use the ChangeThisFile API to convert Matroska to WMV in your app. No rate limits, up to 500MB files, simple REST endpoint.

View API Docs

Read our guides on file formats and conversion

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