[Harry Putnam] “Do you mean I have to render this out twice? I see no other way to accomplish what you suggest.”
That’s correct. Video (MPEG) and audio (AC-3) are separate renders.
This allows maximum control over everything when doing renders.
AC-3 renders fairly quickly (usually not even enough time to go get a coffee!!) so I don’t even think about it.
You can use a “batch render” script to automate this procedure. There’s one built into Vegas Pro 8.
“And concerning the bit rate: What does it mean to figure the bitrate according to the total time of project?”
If your video is over 70 min. long (and you’re burning to a single layer DVD), you’ll need to use a bitrate calculator to maximize the video.
Here’s a link to the one I use.
Note that this links to a zipped file.
Vol. 1 Issue 7 of Edward Troxel’s free newsletters takes you through the DVD authoring process. I highly recommend reading it.
“192′ is that a default?”
Yes, it is.
“If it is a default, is there some reason for me to mess with it?”
The only reason people mess with it is if they want to either change the data rate (I personally leave it at the default) or alter the playback level (the AGC option in the “Dolby Digital AC-3 Studio” handles the level control issue for you).
“It doesn’t really matter that its in stereo of course but just curious how I would set mono?”
You have to go into the “Custom” options for AC-3 and select 1/0 C in the “Audio coding mode” box.
“And I guess it might affect render time and final size somewhat.”
I’ve never tried a mono render so I have no idea.