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Trunkin said:
SvennoJ said:

Afaik hdtv broadcasts are still in 720p or 1080i. My cable box doesn't have a 1080p option, 1080i is the highest. At the start (2006) we got the full 15mbps channels, yet after they started adding more HD channels they reduced the bandwith to half to squeeze more in. It's something like this: Channels are received at 21mbps, it used to be 1 HD channel packed with 1 SD channel, now 3 HD channels are packed together and SD channels have been compressed even further. There's only a maximum amount of total bandwidth, more channels = lower quality.
If you know how big the HDD is in your pvr it's not that difficult to caclulate the average bandwidth. The more fits on, the lower the bandwidth gets.

And yeah HD cable looks like a joke during fast action scenes. Analog tv looked better during fast action. However analog has been axed completely to make room for more 'HD' channels. (You need a digital adapter now for horrible quality SD channels)

Damn, I had no idea. I would have thought they'd have increased the total bandwidth by now, or is that some kind of inherent limitation of the technology? Makes me wonder what on earth they're plannign to do when 4K gets more mainstream. Just give up?

Actually, doesn't this mean that services like PSVue and Sling could theoretically provide higher quality than standard cable right now?

We are limited by a finite amount of usable spectrum/frequency to transmit data over the air.

We have various technologies in place to try and eek more out of it... But, if you wan't more bandwidth so we can have better TV, then you need to get around the laws of Physics.

You can either use better compression methods...

Or throw more towers that transmit TV signals around... As signals tend to attenuate over long distances, which limits the amount of usable spectrum.

Same goes for Cable, there is only so much usable spectrum on the cable before the signal attenuates and becomes unusable.
You can get around that by placing repeaters/nodes at various points and better modulation, but that will only take you so far.



--::{PC Gaming Master Race}::--