Free Online ASF to MKV Converter
Convert ASF video to MKV online for free.
Drop ASF files here
or click anywhere in this box to choose files
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
Selected files
| File name | Size | Convert to |
|---|
Preparing files
Checking files and selected output formats.
When MKV is the right output
MKV is an open container that holds essentially any codec, popular with archive-quality releases, multi-language / multi-subtitle content, and the ripping community. Convert to MKV when preserving multiple audio tracks or subtitle streams matters. Playback support is universal on desktop, variable on mobile / TV apps.
Frequently asked questions
How do I convert ASF to MKV?
Upload the ASF file and choose an output format. It is repackaged into the MKV container, keeping the original resolution and frame rate. No account is required.
How do I open ASF files?
On Windows: Media Player, natively. On a Mac: VLC, QuickTime does not support ASF. Microsoft's Windows Media container. Outside Windows the codecs inside, WMV and WMA, are the real obstacle rather than the wrapper.