Here are three possible methods to fix VLC not supporting the undf format. The correct codecs associated with the media file is not available.You are using an old VLC media player version.When the internet connection is interrupted or lost while downloading the file and you play it.It happens while you are playing partially a downloaded video or audio file.This error in VLC player comes from the following conditions:

However, you should not worry about the error message you can easily solve this error by following this post to troubleshoot the problem. When launching those files, there will be an error message “ No suitable decoder module: VLC does not support the audio or video format “undf” appearing on the screen. Saying in other words, the VLC media player cannot read the correct codecs associated with the media file.

UNDF do stand for “undefined file format”. However, some users have reported that the VLC app did not support the UNDF format when they tried playing a video or audio file. It’s capable of playing all popular audio and video files. In the video player software area, VLC is one of the best software. Transfer characteristics : BT.709-5, BT.1361

M4V, same error - Download Error: timed outĪnd when you download it via TV and then open it (it calls 'totem') you get the error the stream is encrypted and decryption is not supportedĪre you able to open it - the file or the stream - one way or another?Ĭomplete name : mzvf_2.p.m4vĬolor primaries : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M My guess is the file is corrupted or not valid! I tried to open it via TunesViewer and it gives me. M4V, I have a black screen with controls, apparently to play a 30 seconds file. Well, running VLC from a terminal gives a 404 error, meaning the file is not found, but this is with a.

Undf video forma