Problem using Quicktime Screen Capture for longer content
When I try to make longer screen capture recordings (one hour +) using Quicktime Player on my MacBook Pro 2014 Retina running Big Sur 11.5.2 all it ends up capturing when the content ends is a screenshot. Short screen recordings seem to work fine. There is no error message and no communication from Quicktime or MacBook about hitting a memory limit for attempts where the recording fails. There just is no captured video at the end, only a screenshot. This is very frustrating when I sat through the same 2 hour lecture video thinking the QT recording was set perfectly and then there is no recorded video. It's ridiculously complicated enough to use Quicktime to capture screen video as you have to add Blackhole audio processing software separately but Apple never tells you that. You have to figure it out for yourself when there is no audio on your first few screen captures. Does anyone know how to hack this or even what the memory limit of video recording is?
MacBook Pro 15″, macOS 11.4