High Def Forum
Thank you for visiting. This is our website archive. Please visit our main website by clicking the logo above.

Does Comcast Triple Play Degrade HD quality?

Michial
02-29-2008, 05:59 PM
I had internet and HD tv service at Comcast and then added the digital phone for a bundled price reduction. But at times it seems as if the hd channels pixelate more often during action or fast camera movements. I have a top of the line 1080p panasonic plasma with a great refresh rate so I dont think its my tv. Does comcast pixelate. It didnt seem to before. I have one 2-way splitter off the wall jack to go to both the hddvr and the aris touchstone modem-the outs of the splitter are 3.5db Ive always had the splitter(one comcast installed) to use for my internet and dvr box-but now it goes to a different router, the aris not the motorola like before. So the splitter isnt new and didnt seem to effect anything before.Maybe comcast is just compressing more lately in the area. I asked a technician and he assured me they do not compress more to add more channels and that my signal strength was strong. Like I said it only pixelates on fast action-it never does that when I watch blurays.

goober22
03-02-2008, 09:34 AM
Triple Play should not be an issue as they operate in different frequency ranges.

The HD channels in question, are they locals? Many local stations are starting to add subfeeds to their digital signal. The more they add, the less bandwidth available for the main HD channel. I have 2 locals that have 2 additional subfeeds and another that has 3! You can see the blur on fast action with them.

So far, neither Comcast or Knology compress their signals here, but they only send what the locals send out.

VODGuy
03-04-2008, 04:25 AM
Triple Play should not be an issue as they operate in different frequency ranges.

The HD channels in question, are they locals? Many local stations are starting to add subfeeds to their digital signal. The more they add, the less bandwidth available for the main HD channel. I have 2 locals that have 2 additional subfeeds and another that has 3! You can see the blur on fast action with them.

So far, neither Comcast or Knology compress their signals here, but they only send what the locals send out.

This is correct, what you are seeing is probably being sent from the provider.

It drives me nuts to flip through my 30 HD channels here and only see about 20 of them actually broadcasting a true 1080i source. Many broadcasters are just trying to upconvert from 480i to 720p or 1080i and I can always tell because of the smearing on the edges during action scenes.

Truly frustrating I know.

It's just too bad that content providers are shortcutting to get additional "HD" content on the air simply because they think we won't know the difference between upconverted SD and content shot in true HD.

The scarry thought is... what if they think this is actually just as good as true HD content.... bean counters can wreak havok on your PQ.