VLC Error – No Suitable Decoder Module for Format ‘undf’

audiocodecvideovlc-media-playerwindows 7

I'm playing a video in VLC which has dual audio tracks. It runs fine with one track (Language), but when I change to the second audio track, doesn't play the audio and gives the error below:

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

How do I fix this VLC Media Player error?

Best Answer

It says that there is no audio there basically. Which VLC do you use? Does the movie plays with other soundtrack in an other player like mpc-hc(from CCCP pack) ?

If yes, you can try a fresh VLC build like 1.1.0-pre5 or something (or pre4.. if I remember clearly they are at pre5 already).

Related Solutions

When playing DVDs with VLC media player, both video and audio pause several times per second

Try adjusting a few settings.

In the video tab of your settings, ensure that the following are checked

Skip Frames
Accelerated video output
Use hardware YUV->RGB conversions.

Also, go to the "Inputs & Codecs" section and adjust the Caching level to one with higher latency.

If you still have problems, naturally head over to the VideoLAN forums and see what else they recommend.

VLC playing mkv file without sound

This means that VLC doesn't recognize the format of one of the data streams in your MKV file. It can't play this file and considers it unfixable.

Without more details, we can't tell you why VLC thinks the file is broken. You can try:

playing it in another media player;
updating to a later (or earlier) version of VLC and trying again;
re-encoding the file (if you encoded the MKV yourself), possibly using different settings or a different encoder; or
downloading the file again (if you downloaded it from the Internet).

You might look into MKVtoolnix (for Linux, OSX, Cygwin and Windows) or MKVtools (for OSX). MKVtoolnix is a set of tools for creating, altering, and inspecting MKV files; your MKV may be reparable using them. Start with the following command, and inspect the output for errors; it may give you more information about what's wrong with the file:

mkvinfo filename.mkv

Best Answer

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When playing DVDs with VLC media player, both video and audio pause several times per second

VLC playing mkv file without sound

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