Speak of the devil, I was just looking for something just like this earlier this week. I may have even have ran into this exact project, but it didn't have functioning playback until now. I have a spare CRT in my office that I use for some old consoles, and thought it would be neat to stream some 4:3 media onto it, but didn't want to bother with getting some client box and HDMI to composite converter. If this works well, it would solve that problem nicely.