I executed a 2 hour Prepare. Saw a mistake I made in the Menu. Does this require a repeated "full" 2 hour of the Prepare again? If not how do I go about this so I don't "waste" time .. ?
Depending on the mistake, you may find MenuEdit useful. It's more than worth the fifteen bucks to register.
Another option is something I've used to fix typos on DVDs I'd already prepared. The gist of it is that I fixed the typo and replaced the videos in the project with <em>really</em> small video files. I prepared this corrected version to a different directory, and then copied the VOB file for the corrected menu over the VOB for the original. If you try this, make sure you safely back up both your original DVDA project and the original prepared files.
I did this with very basic DVDs, though. One menu with audio and a static background, two video clips (an hour each), and no chapter points (so, no scene selection). This method might not work, or might need some tweaking, if yours is more complicated. If you need more specifics, like which file to replace, let me know. Haven't got any DVDs with me here at work...
Whatever you do, back up your original files first!
I posted a message about this with DVDA1. It would be really nice if it could selectively rerender only the changed portion of a DVD preparation rather than redoing the whole thing. ex-you have a dvd with 5 menu pages. You decide to go back and change one, it only rerenders that one menu. Alas, this is not available. Hopefully in the future.
Cheroxy
I would imagine that the solution is to do as much rendering as you can in Vegas instead of in DVDA. Vegas has templates for making DVDA video and audio streams; if you use those to render your projects as MPEG2 and AC3 files, DVDA hardly has to do anything. Preparing and Burning a DVD using files that have already been rendered to the proper specs takes almost no time at all.
Frankly, I can't think of any other DVD authoring programs that WILL let render and prepare a project, make a change, and then render and prepare only the portion that changed[1]. Do you know of any? IIRC, Pinnacle Studio comes close, but that's because it creates temporary files for element of a project as it renders/prepares. Unfortunately, I believe this was part of why Studio 8 was so instable; it could not keep track of all the little bits and pieces.
Rob
[1] I'm referring to standard, DVD-Video format, not proprietary formats like Nero's DVD+VR.