Convert ASF to MP4 Online — Free
Fast, free ASF to MP4 converter. No registration required.
Drop files here or click to browse
Supports: ASF files
Max: 100MB (free) · 2GB (Pro)
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How to Convert
Upload your .asf file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mp4 file when it's ready.
What is ASF?
ASF is a Microsoft container format designed for streaming audio and video. It can contain various codecs including WMV and WMA.
Format Details
- Full Name
- Advanced Systems Format
- Extension
- .asf
Key Features
- Streaming optimized
- Microsoft format
- DRM support
- Web delivery
What is MP4?
MP4 is the most widely used video container format. It stores video, audio, subtitles, and metadata. Compatible with virtually every device and platform, from smartphones to smart TVs.
Format Details
- Full Name
- MPEG-4 Part 14
- Extension
- .mp4
Key Features
- Universal compatibility
- Streaming support
- Small file sizes
- Hardware-accelerated playback
ASF vs MP4
| Feature | ASF | MP4 |
|---|---|---|
| Full Name | Advanced Systems Format | MPEG-4 Part 14 |
| Extension | .asf | .mp4 |
| Best For | Streaming optimized | Universal compatibility |