Originally Posted by blee0120
I do wonder how long it would take for broadcast to be in 4k. I always hear that its years away. Since we know hdmi 2.0 level B is all we need for uhd bd, what else do we need more than level b for? I do want a 4k projector with the full hdmi 2.0 for the future but I'll be on to the next 4k projector by that time. I guess I was expecting more from the start. We are still about a year away for uhd bd, so level b is good for now.
This is a real chicken and egg problem. In a few years - when the majority of TVs sold are UHD - then there will be incentive for cable companies/Dish to offer UHD channels.
Broadcasters are in a different situation. Their TV channels are 6 MHz wide, and can transmit ~20Mbps. Almost all of them have 1 main channel, and 1 or 2 subchannels. All of this must fit in the 20Mbps channel. As it is many skimp on the BW assigned to the main channel - so you end up with crap HD.
Now putting aside the issue of compatibility with existing HD receivers, a 2160p30 UHD is is going to be hard to get into less than 20Mbps. So what about the subchannels - do you think the stations are going to just use 1 main channel and give up the subchannels? Does not seem likely to me. So you would end up with a crappy UHD just like we have (mostly) crappy OTH HD.