Making a reflection on a glossy object based on each frame of the video I made some attempts in doing it but all of them didn't look to well and they didn't change with the video.


I managed to achieve this. Perhaps someone with more experience could give me some tips on making the effect more realistic?
Another question: how can I add a noise to my render so it looks more grainy in a way bad video does?
If I understand correctly, you want to create a glossy object and have it reflect an environment comprised of moving images from a video...



You don't have to map the reflections into the object, just give it a glossy shader and let it reflect the environment.

It's on the World that you need to map your video image and let it reflect on the ring: