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Title: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Sunbury on February 23, 2009, 05:23:28 AM So I hooked up a 32-in 1080i LCD TV to my cable DVR via the component connections. The DVR outputs both standard def (4:3) on most channels, and HD (16:9) on 40 or so.
Watching a 'tape' of Letterman on standard def, in 4:3 mode (I have to manually switch the TV to 4:3 vs 16:9 since I hate 'stretchy' mode, and it does not auto-detect), during the monolog, whenever the camera moves slightly left or right, the tiny lights on the set behind him go dim, then after a moment, they go back to normal brightness. I had this same set at my old house (haven't used it in 1.5 years after a move), but I don't recall seeing this effect. Is it something to do with the LCD TV, or with the HD -> SD (at cable company) -> component? I haven't looked at it yet on HD. I've never notice this dimming effect before on other stations. Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Trippy on February 23, 2009, 05:38:03 AM Can you transfer the video from your DVR to your computer and view it on there?
Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Sunbury on February 23, 2009, 06:53:30 AM I have the same model DVR connected to 3 other TV's (2 old rear projection big screens, old old, before HD was around) and a regular non HD TV and have never witnessed the point of light dimming effect. So I'm guessing it the LCD TV.
Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Polysorbate80 on February 23, 2009, 07:48:29 AM Scaling artifact, most likely.
Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Broughden on February 23, 2009, 08:09:50 AM Uhm Im not an electronics component guru, so Im asking...but connecting components to a 1080i LCD TV via component connections (you mean the yellow, red and white connector?) means you arent actually getting any of the available picture quality are you? If you arent using HDMI or other digital connection?
http://en.wikipedia.org/wiki/Component_video Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Trippy on February 23, 2009, 08:25:51 AM "Yellow, red, and white" is composite, not component.
Component can carry 1080i as the Wikipedia article you linked says. Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Sunbury on February 24, 2009, 04:51:21 AM The DVR has HDMI out also, but the LCD TV only has DVI, which I read is signal compatable (without sound) but I'd need an adapter cable.
I searched around the internet, and 'people say' that the component connection (5 wire - 2 for sound, and 3 for video (Y, Pb, Pr)) carries HD just as well as HDMI, except you have 5 wires to 'look at and mess with' rather than one. HD looks great, so I'm sure its working. I still have to check out Letterman on HD to see if it has the same effect. Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Broughden on February 24, 2009, 09:55:10 AM "Yellow, red, and white" is composite, not component. Component can carry 1080i as the Wikipedia article you linked says. Like I said Im not an expert on that stuff. I feel lucky I hooked up all the stuff my wife bought me for Christmas with out electrocuting myself or causing the house to burn down. My biggest moment was routing the cables along the back of the entertainment center in order to hide all the speaker wires and such. Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Sunbury on February 25, 2009, 04:45:21 AM Update - so I looked at Letterman in HD / 1080i in 16:9 format.
It still has that same effect, but to a lesser extent. The tiny lights in the set background seem to fade when the camera pans, and then brighten back when it stops. The larger lights on the model bridge don't have this effect. It must be related to how LCD TVs work, or at least this model. Title: Re: LCD TV + Letterman = Background Lights Blink on Camera Move? Post by: Trippy on February 25, 2009, 04:56:38 AM If your TV is set to overscan try it with it off (e.g. set it to "Full pixel" mode). Could just be a poor deinterlacer, though.
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