Hi,
I am using vegas 7, using NERO to recode a dvd into mpeg 4, when i import the file into vegas and drag into timeline, only the audio portion exists. I know both the audio and video recoded because it will play in other players but will not recognize in vegas.
Because Vegas doesnt support Nero's Mpeg-4 implementation. It doesnt work for etiehr ASP or AVC. Nothing you can do except use Nero Vision to render out to AVI and then import it to Vegas.
One extra tip.
You'll more than likely find that Vegas has an issue with joining multiple VOB files, you'll get minor glitches, even with the ones from a Vegas / DVDA created DVD.
To solve this problem use DVD Shrink to join all the VOB files into one VOB file. Vegas will then handle it minus the glitch.
This isn't much of an issue with Camcorder recorded DVDs as these glitches are only at the start / stop of a recording.