.WAV is an audio format.das_hips wrote:... but if the audio files were .WAV instead of .AVI would that matter? I'm assuming it would massively increase the size of the DVD... and are .VOB files just a video/audio merged format? Can they be be converted to MPEG instead of AVI?
.AVI is an Audio/Visual Interleaved format.
.vob is a specialized MPEG-2 format for DVD.
What audio files are you referring to? The converted .vob files? If so, the .vob contains audio and video, hence the need to extract it to .avi. The second part of your query... a .vob file is a "merged" audio & video format, highly compressed via MPEG-2.
The working files for the Toronto ACC DVD I recently completed occupied almost 50Gb! For another project I am working on, one of the audio tracks alone is just over 2Gb. So aside from tech knowledge and skill, you really need the hard drive space and processor power. (I'm on a G5 Mac, 250Gb hard drive, 768mB DDR RAM... more wanted)
I would suggest you do more research into the process before attempting it as it can get very complex, and it's always time consuming. (Or, if you want an easier solution, contact the taper and see if he'll dub the master tapes for you via B&P.)
Here is a great site on DVD: http://www.dvddemystified.com/