I am a new customer to BT having been rudely dealt with by Sky broadband. I live in a flat and cant have sky multiroom and Virgin is not available in my street. I switched to BT for my telephone and infinity 2 for my broadband. I wanted more than freeview in my bedroom so took out the BT you view which is connected via powerline adaptors i bought off BT. Everything is working perfectly but i want to put a second you view box in the 2nd bedroom. I called BT to order a 2nd box and another powerline adapter but the sales staff told me i would need an engineer to visit and cable both you view boxes. I was told the cost would be £35 no different to the cost of another powerline adapter. is this the case.
It's very difficult to say if a second box would work. The streaming channels use a system called "multicast", which does not do any buffering. Any lost or delayed packets means your picture breaks up.
For most people, one box works fine over powerline adaptors, provided nothing else is using them. However, if you had two boxes both trying to stream video at the same time, things may not work. It's very difficult to say, as the speed that the adaptors are capable of delivering depends entirely on your home mains wiring.
If you want to save money, there's nothing to stop you buying your own long ethernet lead, if you can find a way of routing it around the flat. Standard Cat5e ethernet works fine up to 100m with good quality cable and connectors.
I was a Beta Tester for the BT trial that covered multicast and was successfully running 3 devices over the powerline adapters of which 2 were YouView boxes both of which were recording 2 channels at the same time so it can definirlty be done.
I agree with zarf2007. As long as you have decent powerline adapters that support multicast (most do) and ideally 500Mb/s adapters, they will quite easily cope with mutiple devices (Youview+ and PC and smartphones and tablets). I consistently get 200+ Mb/s across 3 powerline adapters way beyond what the Infinity2 can deliver. I am using 2 YouView boxes, a PC, a laptop, 3 iPhones and an iPad and get no buffering or breakup of any sort.