Re: pixelated during fast action
- From: "ZVR" <nospamever@xxxxxx>
- Date: Sun, 28 Aug 2005 19:28:27 -0400
I am pretty sure the cable company is compressing the HDTV feed too much. In
other words what your grandfather is getting from the cable company is not
exactly what the network broadcasts. They can do that to save bandwidth,
considering they have so many channels to carry over a fixed bandwidth. Most
cable companies use some form of compression on the incoming signal before
they put it on the wire.
If this is the problem, calling the cable company and complaining, as Mack
was suggesting, won't help a bit. My company (Rogers Cable in Canada) does
exactly the same, on all HDTV streams except their "HDTV demo" channel (go
figure). Fast action scenes (sports, explosions, high-speed chases in movies
etc) always get pixelated. Bottomline, the cable co. will not change their
compression ratio only because of your complaints.
Here's how you confirm this is a cable compression issue:
-Get an antenna for the DLP TV, something that would work with HDTV and in
your granddaddy's location (there are numerous threads on this topic in this
newsgroup)
-Hook-up the antenna and use the built-in tuner to receive HDTV signals
-Compare the picture quality with what you're getting from cable. You will
see the difference, I can guarantee you that.
Good luck!
"Duke" <sorry@xxxxxxxxxxx> wrote in message
news:LllQe.86814$dJ5.44075@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Hello all,
>
> Well my grandfather came to my house last year and watched the Superbowl
> on my Sony HD RPTV. He loved it and wanted one of his own. I steered him
> towards a Mitsubishi DLP. He just got it and I set everything up with his
> DVD/Cable, etc... I stopped by lastnight to see how the football games
> looked in HD on his set as compared to mine. During the game, as long as
> there wasn't much action, and the camera was relatively still, the picture
> looked great. However as soon as the camera started to move with any
> amount of speed (to follow the players) the picture would go to crap. It
> would become very pixelated. As soon as the action would slow back down
> the picture would immediately improve. His Mitsubishi has a built in HD
> tuner and I currently have component cables running from the cable box
> into the component inputs on his TV. I set the cable box to bypass it's
> own HD tuner and use that of the TV's. I live very close so I went down
> to my house to see if the same was occurring on my TV. Nope, even when
> the action sped up the picture remained perfect on my TV.
>
> Some things I was thinking:
>
> 1. Maybe the HDMI cable would fix this (hdmi from his cable box to his
> TV)
> 2. Maybe this is just the way it is as the broadcast is in 1080i and his
> TV is native 720p (my TV is native 1080i)
> 3. The cable company is just screwing up the broadcast somehow (he
> receives his local HD's through the cable, not via an external antenna)
>
>
> Any ideas on what might be causing this ?
>
> Thanks,
>
> Duke
>
.
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