The VideoLAN Forums

morning to all,


this is the first time i encountered an error in using VLC ... i almost used this kind of player everyday ... that's why when this error occurred i search for any solution i can get in the internet but sad to say nothing gives an exact HELP ...

does anybody will help with this error ... i directly go here for asking in any help ....

"No suitable decoder module:
VLC does not support the audio or video format "undf". Unfortunately there is no way for you to fix this."


thanks in advance ...

Welcome.....

Yes i get this alot,it means you happend to find a stream to which VLC has no codec for.. (There luckily isnt very many!!)

how can i resolve this kind of problem with VLC .. i think still now ... the problem is still on going in different video format ... any suggestion ...

btw the extension file of the video format is .flv

i downloaded a video toturial from youtube ... then after i play ... that error occured ...

does still no solution for this problem?

undf means that VLC cannot identify the codec the video/audio/subtitle track is using. If you want more help, use tool called Mediainfo and share info about the file, or better solution, share the problematic file to us.