Like launching Sky Arts, Sky Atlantic and Now TV, this seems clearly aimed at capturing marginal subscription revenue from customers who wouldn't otherwise choose Sky.
Given the technical limitations of streaming I don't see it being a wholesale replacement of satellite in the medium term.
I don't think Sky will propse streaming for dish-less Sky, that's what NowTV is for.
I suspect Sky without a dish will be like BT's TV provision. That is implemented by multicast from the exchange. This is a VERY different kettle of fish to streaming (which is what OTT services use)
With streaming, you are unicasting a stream to every subscriber watching over the public internet, and usually have seamless switching between different bitrate streams (either using MPEG-DASH or one of the other systems like HLS or HDS?).
With multicast you route live streams over a private, non-public internet, backbone to the exchange, and make them available via multicast over the final leg. This means a single stream serves all subscribers simultaneoulsy (so you don't have to scale servers to subscribers in the same way), and you aren't at the mercy of 'public internet' and contention and QoS can be managed very differently. The reason they don't do this for NowTV is that multicast over the public internet isn't really an option. This will almost certainly mean you'll need Sky broadband of course...
The quality of the stream is fixed and at a 'broadcast quality' - and is pretty identical to the streams that you will get from satellite. (So you'll need to be able to cope with 18Mbs peaks for a single HD channel, and far higher for UHD, if they go for that quality. That said they COULD go for H265 - as I bet the Sky Q boxes support it, though 1080i doesn't compress that well in H265...)
Of course if you only have 70Mbs or less of final-leg download capacity, if you start watching or locally recording two different 4K channels in different rooms, your internet connection will slow down...
Last edited by noggin on 27 January 2017 1:27am - 2 times in total