Is my unsaved Quicktime player movie recording still on the hard drive somewhere?
I was able to recover a recording after QuickTime Player crashed because I disconnected the projector which was in full-screen. I found my recording up until the point of crash in this location: /Users/AB/Library/Containers/com.apple.QuickTimePlayerX/Data/Library/Autosave Information/Unsaved QuickTime Player Document.qtpxcomposition

More info here: https://www.macstories.net/news/recovering-a-lost-quicktime-recording/, which in summary said to:


Right-click the qtpx file we found
Select "Show Package Contents"
Find the movie or audio we were looking for and copy it to where we want