Altering DVD without breaking Menu

[aceso2896]

First off apologies if this isn't the right forum. I'm not exactly sure which one my issue would fit under exactly and figured why not try the newbie as I'm sure this is an easy process and I'm just missing something.

I've been googling various terms the past weeks trying to figure out this issue I'm having and I can't find anything that explains it.

I was wondering if there is a possibility of taking a DVD and ripping the files to where I can re-encode the video (even at just a higher bitrate) and put it back onto the disc without breaking the menu? Basically I have a 4.1gb disc and I'm wanting to turn it into a 4.35gb disc for a couple of different things. I'm not sure if it would be easier to take the video and just re-encode it at a higher rate or redo the audio altogether from a different source (since it was downgraded some in quality). I'm wanting to do all this without breaking the menu (basically not having to go back and edit any part of it or the IFO).

If this is possible and I'm missing something I'd greatly appreciate any help.

[Ghitulescu]

Increasing the bitrate won't increase the quality.

Besides the modifying of a main movie with its reinsertion has been discussed many times, here and elsewhere.

[manono]

If this is possible and I'm missing something I'd greatly appreciate any help.
It's pretty easy in principle.
1. Demux the video in question (PGCDemux)
2. Do whatever you like with the video.
3. Remux (Muxman)
4. Stick the reauthored video back into the original DVD, thus keeping the menus and anything else that might be in there (VobBlanker)

[aceso2896]

Increasing the bitrate won't increase the quality.

Yes, I know this much. It's something I'm wanting to play around with especially if I have another source to play around with.

It's pretty easy in principle.
1. Demux the video in question (PGCDemux)
2. Do whatever you like with the video.
3. Remux (Muxman)
4. Stick the reauthored video back into the original DVD, thus keeping the menus and anything else that might be in there (VobBlanker)

Hm...if it's that easy then I'll start toying around with it. I've been playing around with those programs for a bit. I've been looking at the various guides and such, but found a few conflicting saying I would have to edit the IFO to redo the menu linking.

From what you are saying this sounds like something I would not have to do. I'm guessing it's because it is linking to a timecode rather than a specific data bit in the video?

[Ghitulescu]

... but found a few conflicting saying I would have to edit the IFO to redo the menu linking.
I don't think guides are inherently conflicting. I believe each guide is consistent to itself, otherwise it won't work. Take the information in its context :)
From what you are saying this sounds like something I would not have to do. I'm guessing it's because.......
... Vobblanker did it for you :)