WMA to MKV Converter
Convert Windows Media Audio (WMA) files to MKV container format for enhanced metadata support, media server compatibility, and flexible organization. Choose copy mode for zero quality loss or re-encode to different codecs. Professional-quality audio conversion powered by FFmpeg, all processing happens securely in your browser.
Recommended Settings
For Quality Preservation
- •Copy mode for zero quality loss
- •Fast conversion with no re-encoding
- •Original WMA quality maintained
For Compatibility
- •AAC codec for better player support
- •MKV container widely supported by modern players
- •Excellent metadata and organization features
Pro Tips
- •Copy mode wraps WMA in MKV without quality loss
- •MKV supports extensive metadata and chapter markers
- •Preferred format for media servers like Plex and Jellyfin
Most Popular
Most users choose 'copy' mode to preserve original quality
When to Use This Tool
Wrap WMA audio in MKV container for maximum flexibility and compatibility with modern media players that support Matroska format.
Recommended: Copy codec
MKV container supports extensive metadata, chapter markers, and multiple audio tracks, making it ideal for archival and organization.
Recommended: Copy codec
Convert to MKV for compatibility with media servers like Plex, Jellyfin, and Emby that prefer the flexible Matroska container format.
Recommended: AAC codec
How It Works
Upload your WMA audio file
Select copy mode or choose a codec for re-encoding
FFmpeg wraps or converts audio into MKV container
Download your converted MKV file
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by FFmpeg.wasm (WebAssembly) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is MKV format?
MKV (Matroska Video) is a free, open-source multimedia container format that can hold unlimited video, audio, subtitle tracks, and metadata in a single file. Despite the name, it can contain audio-only content. It's highly flexible and widely supported by modern media players.
Why convert WMA audio to MKV container?
MKV offers superior metadata support, can contain multiple audio tracks, supports chapters and attachments, and is the preferred format for modern media servers. Using 'copy' mode preserves original WMA quality while gaining MKV's organizational benefits.
What's the difference between 'copy' and codec options?
Copy mode wraps the WMA audio in MKV container without re-encoding, preserving original quality and being very fast. Codec options (AAC, MP3, FLAC) re-encode the audio to different formats, which can improve compatibility but may reduce quality due to re-encoding.
Will I lose quality converting WMA to MKV?
With 'copy' mode, there's zero quality loss—the WMA audio is simply wrapped in an MKV container. With codec re-encoding options, you'll experience generation loss since both source and target are lossy formats. Use 'copy' for best quality, or high bitrates if re-encoding.
Can all players play MKV files?
Most modern media players (VLC, MPC-HC, Plex, Jellyfin) fully support MKV. However, some older or proprietary players may not. MKV is the standard for media enthusiasts and home theater setups but may have limited support on mobile devices compared to MP4.