How to avoid noise when filming dark red
Filming any light that is strongly a single color is likely to produce a lot of noise because it's absorbing more light. (In your case, the red brick is absorbing green and blue, leaving only the red.) 

Furthermore, if you're filming with a Bayered CMOS sensor like the ones found in most phone cameras and DSLRs, the sensor captures twice as much green light as it does red or blue light. The sensor sites are generally set up in a red-green-blue-green order.

So you're starting with less light reflected from the material and your collecting less light at the sensor. Any noise is going to be magnified because the resolution of the red channel is half that of the green channel, too. So how do you avoid it? You have a few options:


Supply more light to the scene
Use a camera with a sensor that has good low light response
Apply noise reduction in post
If you can change out the background (either by replacing it or filming from a different angle), that might be better.