1. Upload your WMV file
Start by dragging and dropping your WMV file into the upload area, or click to browse your device and select your file in the list.
WMV to MKV Converter Online
Convert your WMV (.wmv) file to MKV (.mkv) in seconds straight from your browser. No installs. No watermarks. 100 % free.
Rated 4.6 out of 5 on Trustpilot
Why choose HappyScribe?
47+ Formats
Convert from WMV to MKV but also 47+ other formats.
100% Free
No signups, no fees, no hidden restrictions. Convert WMV to MKV directly in your browser for free.
Secure
We take your security seriously. All file transfers use 256-bit SSL encryption.
Online
No installs needed; convert WMV to MKV right from your browser, on any device, anytime.
How to convert WMV to MKV?
2. Choose MKV format
Next, pick MKV as the format you’d like to convert your video into. Alternatively, we support +47 formats that you can choose from. When you’re ready, hit the Convert button.
3. Download your converted MKV
Once the conversion is complete, you’ll get a download link right away. Just click to save the file to your device. It’s fast, easy, and doesn’t require any software installation.
4. (Optional) Transcribe your MKV to text
When your file is converted, you can use HappyScribe video to text converter to get an accurate transcript.
What is a WMV file?
WMV (Windows Media Video) is a video compression format developed by Microsoft. Commonly used for streaming and playback on Windows systems, WMV files are often found in corporate training materials, webinars, and legacy media archives. Converting WMV to modern formats like MP4 improves compatibility across devices.
What is a MKV file?
Matroska Video (MKV) is a flexible open container that can accommodate virtually any codec, multiple subtitle tracks, and chapter points. It is built on EBML (Extensible Binary Meta Language), a binary cousin of XML, allowing unlimited, self‑describing elements. The project began in 2002 after developer Steve Lhomme forked the failed MCF container. With the explosion of H.264 ‘fansubs’, MKV became the default wrapper for anime communities, bundling soft‑subs and styled karaoke effects. In 2013 Matroska was standardised within the IETF as the basis for WebM, cementing its longevity.
Free Online WMV to MKV Converter
Need to convert your audio file from WMV to MKV? It’s simple. Just upload your file, choose the output format, and click ‘Convert’. That’s it — no downloads, no complicated software, and no hidden costs. Our tool is designed to be fast, secure, and completely free, so you can turn your files into the format you need in seconds.
Whether you’re converting audio for sharing, editing, or playback on different devices, our converter ensures high-quality output every time. After your conversion, you’ll also have the option to transcribe video to text, making it easy to turn your MKV files into accurate, editable text in just a few clicks.
Frequently Asked Questions
How to open a WMV file?
Windows Media Player opens WMV files natively on Windows. VLC plays WMV on any platform without additional codecs. For professional editing, Adobe Premiere Pro and DaVinci Resolve import WMV but may transcode to an intermediate format. For broader compatibility, convert to MP4 (H.264) using HandBrake or FFmpeg: `ffmpeg -i input.wmv -c:v libx264 -c:a aac output.mp4`.
How to open a MKV file?
VLC, MPV, and Kodi handle MKV flawlessly on every OS. Editing suites such as DaVinci Resolve import common codecs like H.264 or ProRes within MKV, but for delivery you may still export MP4. MKVToolNix lets you split, merge, and tag tracks without re‑encoding.
Related articles
Transcription and Subtitling for Media Production and Distribution Teams
Happy Scribe: Your essential tool for transcription and subtitling, empowering media teams to overcome language barriers and connect with global audiences efficiently and effectively."
How to transcribe a Vimeo video with a third party tool
Third-party transcription tools offer highly accurate transcripts written by human transcriptionists. Users can upload their video transcription files to Vimeo by creating an account with a transcription service, ordering the transcription, downloading it, and uploading it to Vimeo.