Comments

PeterDuke wrote on 12/11/2015, 4:56 PM
Should you be doing this anyway?

Did you know that VOB files in general are only chunks from the complete MPEG2 file, and that the audio at the chunk ends may be corrupted if you edit them in isolation?

Are you hoping to put the edited VOB file back into the DVD without re-authoring it? That sounds a bit tricky to me.
david-pedd wrote on 12/11/2015, 5:47 PM
The audio in the file is mono so I need to edit it for stereo. The file will then be rendered to a mp4 file. I'm not making a DVD from this.

Since I first posted, I found that if I asked to "Make a Copy" of the audio file, it does it, but refuses to open Sound Forge. I then shut down the Vegas file, open, edit and save the audio file in Sound Forge, reopen Vegas and then add the edited sound track and mute the original sound track. A lot of work for doing a simple thing.

Also, how to you get Vegas to stop searching for the Closed Caption track when there isn't one?
Chienworks wrote on 12/11/2015, 9:34 PM
If by "stereo" you mean you are simply duplicating the mono channel into two channels, don't bother. Vegas will do that automatically for you when you render the new MP4 file.

If you mean something different or more complex than this, there probably isn't much you could do in Sound Forge that you can't also do right in Vegas.
john_dennis wrote on 12/11/2015, 9:38 PM
'[I]Also, how to you get Vegas to stop searching for the Closed Caption track when there isn't one?[/I]"

See this.
david-pedd wrote on 12/12/2015, 12:03 AM
Thanks so much for the info!!
PeterDuke wrote on 12/12/2015, 5:30 PM
Well, the steps I would take are:

Concatenate the VOB files into a single MPEG2 file.
Pass the MPEG2 file through a demultiplexer to separate the video and audio.
Create the stereo audio.
Remultiplex the video and stereo audio.
Convert to MP4.

If you are not using the existing mono audio, you could alternatively drag the track IFO file of the DVD to the Vegas timeline, mute the audio, add a stereo track and render as MP4

You might also like to explore how to create your MP4 using the original MPEG2 video without re-encoding. MP4 usually has MPEG4 video.

If you can leave as MPEG2 then so much the better.