Yes this is referring to metadata saved within quicktime movie files,
ither within the properties->annotations section of QT, or via any
other software that can deal with quicktime metadata.
It does not refer to metadata that is then edited/added within iTunes
itself. Although I havent checked
Interesting stuff. Im finding the picture more complex than you
ddescribe though.
Firstly if your videos are getting into iTunes using a RSS feed, I
believe the relevent metadata in the feed takes priority over any
metadata contained within the video file. If you drag video files into
the itun