Substream after Finf Inspect not detected

[Hobkoponko123]

Hello

I have 11 cameras right now (mix of old HQ Vision that will be replaced with HIK and 2 Dahuas)
Problem is that for 2 of HQ (HQ-MP2028KED-IR - local brand) after doing find/inspect it does read as follow:
Main Stream Default - /
Sub Stream none

If I put substream default with / or any text it read under sub stream main stream...
Is there a way of detect what should be sub stream path for those camera? (as said for other models it is working even much older ones)
How to fix this?

EDIT: I have used settings for HIK Cameras and it is working topic can be closed.