ASF to MKV Converter
Convert Microsoft ASF videos to MKV for organised media libraries, desktop players, and home media systems. Start free with no account.
Drop your ASF files here
Up to 250MB per file.
Conversion Settings
Files are encrypted and auto-deleted after conversion
How to Convert
- 101
Upload your ASF files
Drag and drop or select ASF files from your device. You can upload multiple files at once.
- 202
Configure Output
Choose the video quality and keep the source dimensions or reduce the output size proportionally.
- 303
Download MKV files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert ASF to MKV?
ASF is a Microsoft Advanced Systems Format video container used by Windows media applications and streaming systems. Converting it to MKV creates a flexible Matroska video container used for media libraries, desktop playback, and home entertainment, ready for workflows that use the destination format.
MKV plays in VLC, Plex, Kodi, many smart TVs, desktop media players, and home entertainment applications.
Frequently Asked Questions
Why convert ASF to MKV?
ASF is a Microsoft media container used by Windows-focused streaming, playback, and archived video workflows. MKV is a flexible container suited to organised media libraries, desktop players, and home media systems.
What does Crest Convert create from my ASF file?
Crest Convert creates a standard MKV video with a widely compatible video stream and includes the first audio track when one is present.
Can I adjust the MKV quality?
Yes. Choose the visual quality before converting your ASF file to balance detail and output size for your intended use.
Can I resize the converted MKV video?
Yes. Use the output size slider to retain the source dimensions or reduce the width and height proportionally while keeping the original shape.
Can I batch convert ASF to MKV?
Yes. Add several ASF videos, convert them together, and download each completed MKV file when it is ready.
How is my ASF video processed?
Your ASF file is transferred over an encrypted connection, converted securely to MKV, and automatically deleted shortly after processing. No account is required.