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picture judder on htpc

Discussion in 'Desktop & Laptop Computers Forum' started by filmman, Feb 24, 2005.

  1. filmman

    filmman
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    hi members
    htpc with the following spec.
    amd athlon xp 3000
    asrock k7vt4a m/board
    256 radeon 9800se(updated driver)
    1 gig ddr pc2700

    the problem i have is a very juddery picture using power dvd 6 deluxe. ihave tried tweaking all the settings but to no avail, even reinstalled power dvd.
    other problem is a lip sync delay.

    i have tried win dvd 4 and get the same judder but no lip sync trouble.

    pc feeds a h77(tried pj on a friends htpc ,no problems at all)

    help please!
    thanks.
     
  2. KraGorn

    KraGorn
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    Most common cause of judder is playing PAL movies @ 60hz or NTSC @ 50hz .. what refresh rate have you set on the graphics card?
     
  3. filmman

    filmman
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    hi robin
    display set to 1280by 720@60 hz(other options 75 and 80 hz) and refresh rate set at 60hz(again options 75 and 80). i only watch region 1 dvds. judder is so bad picture almost pauses.
    thanks ian
     
  4. Razor

    Razor
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    I have an Optoma RD65 DLP H2+ and it suffers from judder with 60Hz/NTSC playback. The only thing I have found too calm it down is powerstrip set at 49.83Hz @ 720 x 1280.
     
  5. KraGorn

    KraGorn
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    Playing NTSC at 50hz would tend to smooth it somewhat, since that's close to 48hz which is twice the 24fps of movie film, often Reclock will suggest using 48 instead of 60.

    The other main reason for judder with NTSC is 3:2 pulldown, but nothing so severe as you're describing Ian.
     

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