Great thread! The info here helped inspire me to swap out my existing movie posters for these fabric ones.
My main motivation was eliminating all reflective surfaces on the walls and fabric'd the upper walls, soffit bottoms and, of course, these posters. I tried to shoot for poster content that had a minimum of light coloring to disappear during movies and am very happy with how these look and perform. The frames are simple pine 1x2's and ripped the bezels from OSB and then covered with black velvet. Cheap and easy.
I was able to go with some of the same posters I had before, and while the fabric posters are not as photo realistic as their paper counterparts, the family likes the different look they give.
The pics are a little washed out