MP4 to ASF Converter

Batch convert mp4 files to asf online. Change mp4 to asf on Windows, Mac, iPhone and Android in 2 clicks.

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

How to convert MP4 files to ASF online?

Step-by-step instructions for converting mp4 files to asf

Upload MP4-file

Click "Choose File" button to select a mp4 file on your computer. MP4 file size can be up to 100 Mb.

Convert MP4 to ASF

Click "Convert" button to start conversion.

Download your ASF

When the conversion process is complete, you can download the ASF file.


  • ❓ How can I convert MP4 to ASF?
    First you need to add file for conversion: drag and drop your MP4 file or click the "Choose File" button. Then click the "Convert" button. When MP4 to ASF conversion is completed, you can download your ASF file.
  • ⏱️ How long does it take to convert MP4 to ASF?
    Video conversion takes quite a while. It will probably take you a few minutes to change MP4 to ASF.
  • 🛡️ Is it safe to convert MP4 to ASF on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including MP4 to ASF) is absolutely safe.
  • 💻 Can I convert MP4 to ASF on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our MP4 to ASF converter works online and does not require software installation.

Information about MP4 and ASF file formats

Name MP4 ASF
Full name MP4 - MPEG-4 Part 14 ASF - Advanced Systems Format
File extension .mp4, .m4a, .m4p, .m4b, .m4r, .m4v .asf
MIME type video/mp4 video/x-ms-asf, application/
Developed by International Organization for Standardization Microsoft
Type of format Media container Digital container format
Description MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio and store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. Advanced Systems Format (formerly Advanced Streaming Format, Active Streaming Format) is Microsoft's proprietary digital audio/digital video container format, especially for streaming media. ASF is part of the Media Foundation framework.
Technical details Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The format does not specify how the video or audio should be encoded; it just specifies the video/audio stream structure. This is similar to the function performed by the QuickTime, AVI, or Ogg container formats. One of the objectives of ASF was to support playback from digital media servers, HTTP servers, and local storage devices such as hard disk drives.
File conversion MP4 conversion ASF conversion
Associated programs Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player Windows Media Player
MP4 to ASF conversion quality rating:
4.8 (1425 votes)
You need to convert and download at least 1 file to leave a rating!