For the last week or so I was running an audio recording on QuickTime on my 2019 iMac running Catalina (10.15.3) and in total it amounted to about 15 gigabytes in size and was approx. 171 hours long. When I ended the recording and saved it, however, it was only 1 gigabyte and only about 9 hours long - the first 9 hours. There were many important things in this recording that I need. I'm sure it must be on my computer somewhere as I could see my space go down by 15GB while this was happening, and it hasn't gone back up again after ending and saving. Does this file still exist or am I screwed?