WMV to MKV Converter
Convert WMV to MKV in your browser. Free, no signup. Conversion files are not uploaded to Format Convertly servers. Learn the formats, then convert when your workflow needs MKV.
Choose a file or drag and drop
Drop your WMV file here or
Choose file · Drag & drop · Public file link
- 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 MKV
Add your WMV
Drop a WMV file into the browser panel. Nothing is sent to a remote queue.
Confirm settings
Review optional quality/size settings, then confirm MKV as the output.
Download MKV
Convert locally and download the MKV file when processing finishes.
Why Convert WMV to MKV?
Private by design
WMV → MKV 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 MKV instead of WMV.
Practical quality
MKV: 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 MKV
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | WMV | MKV |
|---|---|---|
| Kind | video container | video container |
| Compression | lossy (Windows Media codecs) | 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 | Multi-audio and multi-subtitle movies; Archival rips with chapters |
| Typical size | Moderate; usually larger than a well-encoded MP4 for the same quality | Matches the encoded streams; often large for high-bitrate rips |
| Browser / web support | Not reliable in HTML5 — convert to MP4 or WebM | Poor compared with MP4 — convert for web |
| Compatibility | Best on legacy Windows; Mac, iOS, and web viewers usually need an MP4 derivative for reliable playback | Excellent in VLC and enthusiast players; variable on iOS, some smart TVs, and web players that expect MP4 |
Choose WMV when…
- Legacy corporate video libraries
- Older Windows screen recordings
- Archives being modernized
- Internal training conversions
Choose MKV when…
- Multi-audio and multi-subtitle movies
- Archival rips with chapters
- Open-source container workflows
- Flexible track layouts
What happens to video quality?
MKV compatibility: Excellent in VLC and enthusiast players; variable on iOS, some smart TVs, and web players that expect MP4
Tip
Converting from WMV cannot restore detail already removed by lossy compression.
Does WMV to MKV reduce quality?
MKV is typically lossy (codec-dependent). Use a higher bitrate when fidelity matters, and keep the WMV master for archival.
MKV 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 · MKV
Related converters WMV
Related converters MKV
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting WMV to MKV 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.
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.
Is WMV lossy or lossless?
WMV is typically lossy (lossy (Windows Media codecs)). That keeps files small but means discarded detail cannot be restored later.
What is a MKV file?
MKV is a Matroska multimedia container that can hold many video, audio, and subtitle tracks. MKV is a flexible open container beloved for rips and multi-track films (commentary, subtitles, multiple audio languages). Convert to MP4 when a device or web platform refuses Matroska.
Is WMV to MKV private?
Yes. The file is processed locally in your browser and is not uploaded to Format Convertly servers.
Ready to Convert Your Files?
WMV to MKV privately in your browser.