If you have a mono audio in your DVD or one of the stereo channels is bad (e.g. the right audio channel is muted but the left audio channel is ok), is there a way to make the audio become stereo so that you can enjoy the DVD better? Yes, following is the solution:

1.Extract the Audio from the DVD in WAV format. Please refer to How to Extract Audio from DVD in WAV Format.

2.Load it into Audacity and copy the good channel over the bad one.

Audacity

3. Encode the WAV audio back to AC3 which is one of the audio codecs used in DVD-Video content, using WAV to AC3 Encoder.

WAV to AC3 Encoder

4.Mux the original video and new audio with Muxman to create new VOBs. There is a guide to help you do this.

MuxMan

5. Use VobBlanker to Replace the old VOBs with the new ones.

VobBlanker

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