Esxi running macos For selur

[Selur]

If you want to figure out how to get those streams working in Quicktime/Quicklook, try with different setting in Config->Containers->Mp4 Settings.
Quicktime is known to be a crappy player which always only supports part of the MPEG-4 specifications (true for ASP/AVC/HEVC).
So you got your solution: turn of b-frames and you are fine.

Cu Selur