HD and Analog AV Adapter for Xbox 360 (Assortment)
No, it would not work for that. The adapter is for audio only, because there is only a white and a red output, which is for audio only. I am looking for the same thing you are looking for, and it is very hard to find.
No, that won't work like you would like it to, that cable is to get red and white cables(right and left audio) out via an av to aux adaptor connected to that adapter. tldr: no that is just taking the av slot and just making it audio out.
No and no