I'm seeing the following error: "Use of the requested Audio Unit(s) requires lowering the security settings for “QuickLookUIService (PID 525)”. Are you sure you want to proceed?"

I'm seeing the following error: "Use of the requested Audio Unit(s) requires lowering the security settings for “QuickLookUIService (PID 525)”. Are you sure you want to proceed?" I'm running what appears to be a current QuickTime movie file on an older Mac Pro running the current version of Big Sur (11.6.8). Is there any way for me to determine what CODEC this error is complaining about and (perhaps) update the CODEC?