Yesterday I had a visit from a man with a suction cup.

He did not stay long.

He did not stay long.
I've tried qt_info from qt_tools but it doesn't work: reads tags but can't set them, even after I recompiled it as Intel instead of PPC.
I know how to do this manually in Quicktime Player (the "Properties" window) but I need to do it in batch on a zillion files.
Presumably there's some AppleScript way to do this, but I can't figure it out.