How to remove hiss and static noise from a DVD I got my VHS tapes converted to DVD. The video quality is reasonably good. However, there is a lot of hiss and static in the audio. Unfortunately, the original VHS is not usable anymore, so I can't digitize from scratch again. This is a personal video of family recordings.

The steps I tried are: 


copy the DVD to PC. ( a get couple of .VOB file)
Extract and edit the audio file using Goldwave to remove noise. (the clean files are in .wav format)
replace the audio track on the original .VOB and create a new video file.


I could do the first 2 steps but have not succeeded in performing step 3 as I do not know how to replace the audio file. 

I do not have to create .vob files. Any video format with new (edited/cleaned) audio is fine. 

Are there better ways?
You need a program to download the files from your DVD. Then dump them in a video editor and replace the audio tracks. I believe Windows Video Maker would allow to do everything I am talking about. I sincerely never used vob files straight out of a DVD, but I believe any video editor would be able to support them.