Getting Blank screen on self Video

Thanks @gdrums , @MaxM

I’ve tried to apply the web isolation method,
I want to confirm, step number 1 means that it must be configured on every Google Chrome on the PC that the user is using, right?
for step 2 I have also applied it on the web server (my website’s web server is the iis web server), but after trying again, the video thumbnail is still a black screen.

image

my website uses asp.net framework
is there a step missing? Or is there a technical error that I did wrong?

Thanks