Tested Easy Techniques To Fix The Error Message “VLC Does Not Support UNDF”

Fix The Error Message “VLC Does Not Support UNDF”

What Is The UNDF File Format?

UNDF File Format refers to “undefined file format”. This error occurs when the media player does not recognize the format. This error occurs in the VLC media player as well. Let us look at the problem that the users may face.

Tested Easy Techniques To Fix The Error Message “VLC Does Not Support UNDF”

The Problem

Every time a video file that has not been completely downloaded is played, there may be a UNDF file format error. The error message: No suitable decoder module: VLC does not support the audio or video format “undf”, will then be displayed. Now, let us understand the reason behind the error that keeps occurring on your device.

The Reason

Various reasons may lead to the occurrence of this error message. Below given are some of the reasons for the occurrence of this error:
Incomplete download of the file being played. This format error may also occur in a VLC media layer.
This format error may also be caused due to a corrupted video or audio file.
It may also be due to some internal problems in the video being played.
The unavailability of the correct Codes associated with the video or audio file may also be a reason for this format error.
If an old version of the VLC media player is being used on the device, this error may occur.

In this article, we will be listing various tried and tested easy methods that will help you in getting rid of this error.
The following solutions will help solve the problem:

  • Restore Media Files
  • VLC Media Player Update
  • Install Necessary Codes

The Solution

Method 1: Restoring The Media File

If the problem is arising due to corrupt media files, then it is best to rest ore the media files. This can be done by downloading the file again or getting a new copy of the file from the source. The problem will be taken care of after restoring the media file codecs and the error message: “VLC does not support UNDF format” will not be displayed anymore.

Method 2: VLC Media Player Update

If the above method is of no use, then you can try updating the VLC media player to its latest version. For updating the VLC media player. Visit the official website. The latest version of VLC will be available on the website. Download and install it. The problem will be taken care of. If the problem persists, go for the next method.

Also Read: Fix The Error Message “This Device Is Not Configured Correctly (Code 1)”

Method 3: Install Necessary Codes

If the problem is occurring due to insufficient codecs, then you need to follow the steps given below to get rid of the problem:

  1. Download Combined Community Codec Pack. This has all the important audio and video codecs that are needed to play any video or audio file.
  2. Install the downloaded Community Codec Pack.
  3. Choose “LAV Audio Settings”.
  4. Then select “Format”.
  5. Then, choose all the formats that are present on the list.
  6. Click OK.
  7. After that, play the media file in the VLC media player that you were playing before.
  8. If the problem persists, right-click on the media file.
  9. Select Open With MPC-HC.
  10. The problem will be resolved and the media file will play smoothly without any error messages being displayed.


The reason for the error message “VLC Does Not Support UNDF” are many which vary from incomplete downloads to missing codecs. In this article, all the possible methods of resolving the issue have been mentioned. You can follow them to resolve the issue.

About Tanisha

Tanisha Biswas loves writing. She is a budding content writer who wants to write content that is relatable, useful and that people will love to read.

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