I know some of you are still using 8C. I just tried the latest version of Quicktime.
Rendered an AVI DV to a QT DV. Render went well, could access all settings including audio. Video played fine in QT, but when I brought that file into Vegas, the streams were recognized correctly (even field order) but video was black. Audio was fine. Not sure what the deal is but the file seems to be a valid QT file so unless you have to use it in Vegas, seems to work okay.
Just wanted to provide this info.
Dave T2