How to Fix “VirtualDub ASF Files Are Not Supported”: VirtualDub is an open-source and free video processing and video capture utility developed for Microsoft Windows by Avery Lee. The program is made to create linear video streams with recompression and filtering. Although the program lacks video editing functionalities that are present in the likes of Adobe Premiere Pro, it does offer fast linear functions over video.
VirtualDub mainly supports the AVI container format to keep the recorded videos. So, when you try to open a .asf or .wmv file in VirtualDub, you will get an error message in VirtualDub “ASF files are not supported.” Read on to find out what this error message means and how you can open ASF files in VirtualDub.
Before we get into explaining how to open ASF files in VirtualDub, you should first know what ASF files are and why you cannot open them in VirtualDub.
An ASF file is a type of multimedia file that stores data in an Advanced Systems Format (ASF). The ASF file format is Microsoft’s proprietary audio and video container format that only stores audio and video data or only audio data, in addition to some metadata including bibliographic copyright data, author, and title.
Since it is Microsoft’s proprietary format designed to stream media online, it only specifies how a video or audio streams online, depending on the server performance and the network bandwidth. It does not define the codec that is used to encode a video or audio contained in the ASF container format.
Moreover, although the media files that are saved in the ASF format have a .asf file extension, the more commonly used extensions are .wmv or .wma. If an ASF container format contains a video, then it is saved as a Windows Media Video (.wmv) file. But if an ASF container format contains an audio file, it is saved as a Windows Media Audio (.wma) file. The video and audio data contained in these files are compressed in various video codecs.
Why Can’t You Open ASF Files in VirtualDub?
If you try to open .asf files in VirtualDub, it may not open, and you may see an error in VirtualDub “ASF files are not supported.” The reason why you cannot open ASF files in VirtualDub is that the ASF container format is Microsoft’s proprietary format, which means only limited programs can support this type of format.
Moreover, there are not too many conversion tools you can find for free that convert ASF into supported formats. Therefore, you will be unable to open ASF files in VirtualDub as the platform does not support Microsoft’s proprietary ASF container format. But don’t worry! We will share a simple way you can open ASF files in VirtualDub.
When you launch VirtualDub on your PC and try to open an ASF file, you will see an error message saying that the file is not supported. Here’s what you should do next:
- Go to this link to find a WMV plugin.
- Now in the download links section, click on the first link, “wmv.zip.”
- Download the file.
- Now open the wmv.zip plugin file that you just downloaded. You will see two versions — a 32-bit and a 64-bit version for Windows.
- Copy the right file for your Windows version and then paste it into the VirtualDub > Plugins folder.
- Now run VirtualDub on your PC and drag and drop the ASF file into VirtualDub.
That’s it! You will see that the video is now opening in VirtualDub. That’s how simple it is to open ASF files in VirtualDub.
So that’s all, folks! It only takes a minute to open ASF files in VirtualDub. The six-step process that we have mentioned above works 100% and will take a minute or less to open ASF files in the program. You will no longer see any error message on VirtualDub “ASF files are not supported.”
You can find out more about video editing software in the following resources: