Video Player > _EmissionMap How does it work?

Hi!

I made a 3D room where a screen is playing a video.

I just want the video to look illuminated (like a normal TV) / so far the TV needs a lamp pointed at it to be able to see the picture.

How should I do?
It would be even better if the light of the TV would be a source of light for the room.

I suspect I have to use Material Overdrive / Material Property: _EmissonMap
But the screen just stay blank when I use that option.

Thanks for the help!

 

Hi, I ask the same question.
Is there any help?