Saving macOS Catalina Screen Recordings Cache to External Drive Im macOS Catalina, screen recordings are temporarily stored in ~Library/ScreenRecordings before being saved on the target location. However, on systems with minimal available system storage, this can cause the recording to stop when disk space is full. Is there any way to link ~Library/ScreenRecordings to an external drive such as /Volumes/External\ Drive/ScreenRecordings? 

I have tried using symbolic links, however the screen recording crashed immediately. Is there any other way to do this?
You can try the following option:

$ cd ~/Library/Containers/
$ mv com.apple.QuickTimePlayerX/ com.apple.QuickTimePlayerX.backup/
$ ln -s /Volumes/&lt;NAME_OF_VOLUME&gt;/com.apple.QuickTimePlayerX/ .


If the above option didn't help, then I would suggest you to:

Check the first comment on this page shared by bmike.