Mountain Lion - QuickTime Player X -- What happened to the ability "to select what location (on your Mac) to save your screen recording when finished"
(It is also missing in the graphic which accompanies the text in this article:ht4024)
While the default behavior (file is saved locally in ~/Library/Containers/com.apple.QuickTimePlayerX/Data/Library/Autosave information/Unsaved QuickTime Player Document.qtpxcomposition) seems to work fine for users with mobile home directories, users with network home directories are unable to record on Mountain Lion machines.
I believe that by changing the default save location to a local writable space, we could avoid the issue, but the option to change the default save location seems to be missing.