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*Huge* problem affecting all codecs.. can't reformat, help!

Discussion in 'Video playback problems' started by serpentor, Jun 23, 2004.

  1. serpentor

    serpentor Member

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    About 2 months ago, without changing any codecs except the odd Xvid upgrade here and there, I started to notice vertical bands on many files types. Over the past 2 months, the bands have increased in number and size, affect nearly all file types (mpeg2,divx,xvid,asf,wmv). I've tried multiple codec installations/deinstallations (always making certain to unregister and delete the .ax files). The bands simply change color and increase in quanity when switching between Divx 5.1, Xvid 1.0, ffdshow, 3ivx, etc. Oddly enough, screenshots of the artifacts come out perfect.. so I had to take pictures of my screen with my phone's digicam. You can see how distracting the artifacts/bands are to all video watching..

    http://www.geocities.com/bentleybrian/image1.jpg
    http://www.geocities.com/bentleybrian/image2.jpg

    I believe I have isolated it to a NON-codec issue. After uninstalling my video driver (nVidia 28.42's on a Geforce4 Go 420, Toshiba Tecra laptop), I noticed that while in plain XP VGA mode, the artifacts completely disappear and movies play fine (though choppy since no driver is installed). I have since tried over 6 different driver revisions and yet still, the problem remains. I've also upgraded to DirectX 9.0b with no luck.

    I have literally been pulling out my hair trying to figure out what's causing these strange artifacts (intensive googling and codec forum searching has come up dry). Reformatting is not an option unfortunately. Any help, ideas, or suggestions would be TREMENDOUSLY APPRECIATED!
     
  2. serpentor

    serpentor Member

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  3. Praetor

    Praetor Moderator Staff Member

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    Makes sense cuz if it was a codec issue... WOW lol

    Have you tried anything recent? The 28's are aaaaaaaaaaaaaaaaancient. Does this only happen when you play your movies fullscreen?
     
  4. serpentor

    serpentor Member

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    I'm using the 28.42's as they are the most recent versions supported by Toshiba.. I have tried many more recent versions, including the latest on nVidia's site, with no luck.
     
  5. serpentor

    serpentor Member

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    Happens in both windowed and full-screen mode.
     
  6. Praetor

    Praetor Moderator Staff Member

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    Any luck if you drop the color depth to 16bit?
     
  7. serpentor

    serpentor Member

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    Altering color depth has no affect..
     
  8. serpentor

    serpentor Member

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    Ok after trying every nVidia driver version known to man, I've narrowed it down to specifically a *directdraw issue*. Enabling directdraw hardware acceleration causes the artifacts, disabling it and the video is back to normal (although framerate/resolution suffer). I'm running the very latest DirectX 9.0b. I'm pretty sure the issue wasn't present under DirectX 8.1, although I cannot uninstall 9.0b, and overwriting the ddraw.dll with 8.1's version is not successful.

    Does anyone have any ideas on how I could rectify this situation? This problem has plagued me for months and I feel like I'm finally close to solving it for good. Thx for all the help thus far.
     
  9. Praetor

    Praetor Moderator Staff Member

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    Well this is interesting... i wouldnt have thought DDraw to cause that kind of problem! Might it be something with the "overlay" settings?
     
  10. serpentor

    serpentor Member

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    nView overlay settings are disabled. I also tried adjusting every setting in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw with no success..
     
  11. serpentor

    serpentor Member

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    Reverting back to Directx 8.1 did not fix it either..
     

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