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  • Extract original soundtrack in ASF from video games
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How to Convert ASF to MP4 for Free

By Cecilia Hwung | Last Update:

Summary: Here you will find 3 easy ways to convert ASF to MP4, so that you can playback the video without error, or edit the video into video editing software that rejects ASF files. If you like the audio track in ASF, such as those nice compositions from video games, you can save them too.

ASF files are less common than MP4, and many users meet playback errors when throwing ASF files to a media player or on their specific devices. The ASF files may come from a video game, be recorded to a DVR SD card, or downloaded and saved from other resources.

What Is ASF files?

ASF, the abbreviation for advanced system formats (formerly entitled advanced streaming formats), is a container format developed by Microsoft for video and audio. As the container, it can be used to store video and audio streams, or solemnly audio stream, with .asf being the file extension.

ASF is designed to support media streaming, such as from media servers, HTTP servers, and it is also used in local playback. It is also used in video games, or some Digital Video Recorder (DVR).

Since ASF is a proprietary format, not every player will be able to playback the file. Also, if you want to upload the file to online platforms, such as Discord, Twitter, YouTube, etc., there can be compatibility issues.

If you want to properly playback ASF files, share them to friends, watch the ASF file on TV, mobile phone, quickly trim the video, change file size, and preserve original quality (or even enhance the quality), you will find detailed tutorials below to convert ASF to MP4, with bonus options to enhance the video (and audio).

How to Convert ASF to MP4 for Free with VideoProc Converter AI

If you meet problems such as WMP won't play ASF files, Premiere Pro cannot import ASF files, or online platforms doesn't support uploading ASF files, the best solution is to convert ASF to MP4, as the latter is one of the most widely supported formats, with maximum compatibility with media players, devices, and SNS.

The ASF is encoded with MPEG-4 V1/2/3 for the video stream, and you will need a dedicated video converter to convert ASF to H264 MP4 or MPEG-4 MP4.

Don't worry, you don't need to know about codecs, containers, and all the nitty-gritty. Recommended by PCWorld, Techadvisor, Macworld, TheWindowsClub, and other tech authority publications, VideoProc Converter AI comes with 1-click profile to convert ASF to MP4 for free. You simply import ASF, choose MP4 as output, and click Run to export.

VideoProc Converter AI – Best Free Choice to Convert ASF to MP4

  • 1-click convert ASF to MP4, MOV, MKV, AVI and 420+ formats
  • Free conversion without watermarks on videos
  • Video toolbox to extract audio, download online video, edit videos
  • Auto-copy video to switch container without re-encoding
Free Download For Win 7 or later
Free Download For macOS 10.13 or later

Note: The Windows version now supports AI-powered Super Resolution, Frame Interpolation, and Stabilization to enhance video and image quality. These AI features are not yet available in the Mac version but will be coming soon.

This converter takes any format you throw at it, and offers you pre-configured target formats to choose from (for web uploading, for TV, for YouTube, for iPhone/Android, for general usage, etc). You can opt to easily manage codec settings. Thanks to the friendly user interface, you don't need any technical skills to export high quality video.

Steps to Convert ASF to MP4 on Windows 10/8/7 or on Mac

VideoProc Converter AI Interface

Step 1. Launch VideoProc Converter AI, and go to the Video section from the main interface.

Step 2. Add ASF video files into VideoProc Converter AI.

You can drag and drop the ASF files into the converter, or click the +Video button to import the video(s).

Convert ASF to MP4 for Free

Step 3. Convert ASF to MP4 for free without watermarks.

In the Target format section, find MP4 profile, you can choose MPEG4 MP4 or H264 MP4.

Click Run and the converter will start to change ASF into MP4 on Windows or Mac for you to enjoy anywhere.

Pro Tips

  • For your information, H264 is more efficient than MPEG4. It offers 1.5 to 2 times the compression rate of MPEG4 at the same image quality. In fact, the development of video and image compression centers on the pursuit of smaller file sizes without image quality loss. Following H264, there is H265 HEVC that are 2 times as efficient as H264.
  • H265 MP4 is also supported in VideoProc Converter AI. You can convert ASF to MP4 container, with codec MPEG4, H264 or H265 as you wish.
  • If you don't know which one to use, you can go with H264 MP4 since it is the most popular format these days, fully supported by media players, mobile playback, YouTube, Twitter, Discord uploading, and as an email attachment.

Convert ASF to MP4 for Free:

VideoProc Converter AI is totally free to use for videos under 5 minutes each, which is more than enough as ASF videos are normally 2-3 minutes each. You can convert unlimited number of short videos in batch tasks. There won't be any watermark on the output video.

Unlike other video converters on the market that claims to be free, but in fact are premium tools that will add watermarks, or lock features behind the paywall, VideoProc Converter AI offers the full feature. Plus, if your video is longer than 5 minutes, you can use the 7-day free license to enjoy full features, grab it below:

Download VideoProc Converter AI with 7-Day Free License for Windows

Download VideoProc Converter AI with 7-Day Free License for Mac

When the 7-day license get expired, you will still be able to enjoy full features for short videos (enough for 98% of users' needs, again, no watermark!)

For power users and technicians interested in ASF (Advanced Streaming Format) features, file format organization, header object, etc., you can refer to ASF specification document.

Beyond ASF to MP4 Conversion - VideoProc Converter AI Handles 370+ Popular and Rare Formats!

How to Convert ASF to MP4 for Free Online

Comparing to offline software, sometimes you can also use ASF to MP4 converter online. If your ASF file is small, and you have no privacy concerns (the file will stay on third party server, usually for 24 hours), you can use online tools.

Since most online converters doesn't offer additional options for codec settings, if you want more control over image quality, bitrate, codecs for MP4, you can return to Method 1 above.

1. Use ASF to MP4 Converter Online: Zamzar

Zamzar offers 25 free conversions and the file size should be within 50 MB. To swap ASF into MP4, follow these steps:

Convert ASF to MP4 Online Using Zamzar

Step 1. Drag and drop the ASF file to Zamzar from your local storage. You can also upload the ASF file from Google Drive, Dropbox, OneDrive, etc.

Step 2. Choose MP4 as the target format.

Step 3. Click Converter Now button to start converting ASF to MP4 online.

Once the conversion process is finished, you can click the Download button to save the MP4 to your local drive.

2. Convert ASF to MP4 on

This ASF to MP4 online converter accepts files smaller than 200MB, and will delete your source file from the server within 24 hours. Once the conversion is completed, you can click the download anchor text to save ASF into MP4.

Convert ASF to MP4 Online Converter

The pitfall is, when the download link for ASF to MP4 is prepared, there are some advertisements on the conversion page. You need to make sure to click on the correct area, instead of those Download buttons leading to other ads.


1. How do I convert ASF file to MP4 for free?

You can use VideoProc Converter AI to free convert ASF to MP4 and other formats.

  1. Add ASF file into VideoProc Converter AI in video section.
  2. Select MP4 H264 as the output format.
  3. Click Run button to start the conversion.

2. How do I open ASF files on Android?

To playback ASF files on Android without hiccups, you can use VLC media player for Android. VLC is free and open-source media player running on Android, iPhone, Windows PC and MP4. You can download VLC media player from Google Play Store. Plus, you can convert ASF to MP4 on Windows or Mac with best free video converter, and transfer the files to Android for smooth playback.

3. Can I extract soundtracks from ASF files?

Yes, you can extract soundtracks you like from ASF video, and save them into audio files to enjoy. Using VideoProc Converter AI, you can import ASF video, and select MP3 as output format. Since ASF file is normally encoded in ADPCM for audio stream, you can also use MKV to auto copy the file without transcoding ADPCM.

About The Author

Cecilia Hwung is the editor-in-chief of Digiarty VideoProc. With over a decade of experience, she specializes in delivering insightful content on AI trends, video/audio editing, conversion, troubleshooting, and software reviews. Her expertise makes her a trusted ally in enhancing users' digital experiences.

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Digiarty Software, established in 2006, pioneers multimedia innovation with AI-powered and GPU-accelerated solutions. With the mission to "Art Up Your Digital Life", Digiarty provides AI video/image enhancement, editing, conversion, and more solutions. VideoProc under Digiarty has attracted 4.6 million users from 180+ countries.

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