screen recording

Hello, a few hours ago I screen recorded a very lengthy stream, I checked if everything was being recorded every three or so minutes, three iCloud storage pop ups appeared during the 1 hour 50 minutes that I wanted to record, I checked and everything was still running perfectly, but as soon as I pressed stop only three minutes or so of footage appeared. I let it rest all night to hopefully let the whole thing load but nothing happened, I still have plenty of storage left to handle a large recording.

Is it possible that I lost all that footage despite everything running well the whole time?