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Resolution switching

Discussion in 'TiVo Roamio DVRs' started by ptr727, Sep 10, 2013.

  1. aaronwt

    aaronwt UHD Addict

    19,668
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    Jan 31, 2002
    Northern...
    I can use their PReP, Progressive ReProcessing


    Plus I all my devices in my main setup run through my DUO. The DUO then separates the audio/video and sends the audio to my receiver r HDMI and sends the video to my TV over HDMI. My receiver can't handle 3D so this is why I don't route video through my receiver any more.
     
  2. Scooby Doo

    Scooby Doo New Member

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    Dec 18, 2002
    Wouldn't it have been cheaper to just buy a new receiver? OK, you don't get the Progressive ReProcessing, but what the heck is that anyway? Isn't digital conversion from 1080i to 1080p in the set top box lossless? How exactly can it be "inferior"?
     
  3. k2ue

    k2ue Retired RF Engineer

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    May 9, 2002
    Victor, NY
    For 1080i to 1080p, lossless yes -- you scan into a frame tank interlaced and output full frame -- no actual modification of pixel values takes place.
     
  4. aaronwt

    aaronwt UHD Addict

    19,668
    113
    Jan 31, 2002
    Northern...
    1080i is deinterlaced to 1080P. Devices are better now than several years ago but there are still issues with many devices deinterlacing to 1080P. Although I have not checked out the Roamio deinterlacing capabilities.

    And as far as the external scaler/video processor, I've been using them since 2002 so that was my first choice before getting a new receiver. Maybe the receivers have better capabilities now, but four years ago the DUO was a better option than a new receiver.
     
  5. HarperVision

    HarperVision TiVo's Italian Cuz!

    5,275
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    May 14, 2007
    Paradise...
    So that still begs the question as to why then you wouldn't take FULL advantage of your expensive outboard processor by setting the TiVo to output all resolutions in their native state to allow the superior duo to do it's intended job?
     
  6. aaronwt

    aaronwt UHD Addict

    19,668
    113
    Jan 31, 2002
    Northern...
    I used to in the past, but at a certain point I stopped using native resolution output. Since every resolution change required one to two seconds to resync. It must have been after I removed my Algolith Flea from the video chain. The picture was superb with that in the chain since it removed just the right amount of noise from the picture. But without it the picture just isn't as good. The Flean can only handle up to 1080P24 and I knew it's days were numbered for me to use it anyway.

    Anyway I know I don't want to wait the one to two seconds any more like I used to in the past.
    Plus the DUO is nowhere near as expensive as some of the scalers/video processors I've used in the past. It does give a lot of bang for the buck. But it even cost less than my Algolith Flea cost me six years ago.

    Plus my biggest use now for the DUO(in additon to switching between my devices) is it's auto calibration. Starting in 2001 I averaged at least one professional calibration for my main HD set each year. But earlier this year I finally got the equipment to calibrate the display myself since the cost of the equipment and software was only around twice the cost of a professional calibration. And the auto calibration feature of the DUO makes things so much easier and faster.
     
  7. k2ue

    k2ue Retired RF Engineer

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    May 9, 2002
    Victor, NY
    Are there commands to go directly to a specific resolution, even if it is not checked in the resolution list? That would be optimal -- I like the faster surfing if 1080p only, but on some 480i or 720p material (usually movies) I would like to be able to use an external scaler without the many steps of changing the resolution list.
     
  8. headless chicken

    headless chicken Member

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    Oct 8, 2004
    What's the consensus on best resolution setting for a 1080p plasma? I know some channels like ABCHD broadcast in in 720p, so should that also be checked?
     
  9. rainwater

    rainwater Active Member

    7,062
    1
    Sep 21, 2004
    There is no consensus in general because each tv is different. It comes down to whether or not you want your tv to do the scaling or the TiVo. Some tvs do a better job than the Roamio scaler but in general, I think the Roamio does a good job.
     

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