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  1. Hi

    I have a problem with my players on my mini-PC (Intel NUC), the black areas when i watch a movie (usally mkv H264) is all pixelated or blocky, when i compare this to my normal PC it is all fine..

    It doesn't matter if i try in VLC,MPC even WMP they are all blocky on the mini-PC.

    One thing i did find out was the normal PC have a function called Purevideo by nvidia now that is set to "Use the video player settings" but there is another option
    "deinterlacing use inverse telecine" which is enabled by default, could this be what cleans up my picture better on the normal PC?

    Normal PC - http://imgur.com/SBxBzMj

    Intel MiniPC - http://imgur.com/jDF7Vxg

    its a little hard to see on the pictures, but there is a small difference.

    Setup - Intel NUC:
    ----------------------
    GFX: Intel® HD Graphics 405
    OS: Windows 10 64 bit

    Setup - Normal PC:
    -----------------------
    GFX: Nvidia 580
    OS: Windows 10 64bit

    Both systems running with default settings in VLC and MPC, The system output to the same TV with the same settings, and they are both running Limited colors since my TV can't handle Full.

    I tried:

    Different output modes in VLC
    Running with ffdshow in MPC
    Played a lot around with the settings


    One possible solution i found was turning the brightness down in internal color settings in Intel control panel, but the picture get to dark.


    Can anyone help with this problem?
    Last edited by Malum; 8th Jul 2017 at 15:41.
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  2. Calibrate the monitor. You were on the right track when you lowered the brightness. Maybe raise the contrast and/or levels or gain to compensate. In any event use a calibration tool. The monitor probably came with one.

    And if the video is always piped over to the television, calibrate it as well and don't rely on the out-of-box settings.
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  3. Originally Posted by manono View Post
    Calibrate the monitor. You were on the right track when you lowered the brightness. Maybe raise the contrast and/or levels or gain to compensate. In any event use a calibration tool. The monitor probably came with one.

    And if the video is always piped over to the television, calibrate it as well and don't rely on the out-of-box settings.
    i'll play around with it, i just done get why, because the other PC is working fine on the same TV with the same settings on the tv...this is making my head hurt

    i guess the default settings on the intel gfx could just be bad calibrated
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  4. Purevideo (or any other "automatic" picture adjustment) screws up the picture if your system is set up properly. You should have posted the exact same frame from both computers -- the two pictures are too different to say for sure what's going on. The black levels of the two images look about the same. The white levels may be off. Gamma appears to be the biggest difference.
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  5. Originally Posted by jagabo View Post
    Purevideo (or any other "automatic" picture adjustment) screws up the picture if your system is set up properly. You should have posted the exact same frame from both computers -- the two pictures are too different to say for sure what's going on. The black levels of the two images look about the same. The white levels may be off. Gamma appears to be the biggest difference.
    So i dont know what is going on at this point, i can confirm the pictures is identical, i did this process 3 times just to be 100%, it must be the color settings in the graphics card, they are not calibrated corretly, since the TV run the same settings on both systems.

    i mean the problem must be on a level were i can't take a screenshot, could take a photo of my screen but i doubt anyone would be able to see anything

    Intel: http://imgur.com/yu5bqOt

    nvidia: http://imgur.com/zmx3gb3
    Last edited by Malum; 8th Jul 2017 at 19:25.
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  6. Yes, those two images are identical. The difference must be in how the YUV video is being converted to RGB for the TV. Pure video and the graphics card's video proc amp settings will determine that.

    Try this: set the video output device in VLC to Windows GDI Video Output. This will force VLC to convert YUV to RGB before giving it to the graphics card. Do the two computers still look different?
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  7. Originally Posted by jagabo View Post
    Yes, those two images are identical. The difference must be in how the YUV video is being converted to RGB for the TV. Pure video and the graphics card's video proc amp settings will determine that.

    Try this: set the video output device in VLC to Windows GDI Video Output. This will force VLC to convert YUV to RGB before giving it to the graphics card. Do the two computers still look different?
    Screen dump still the same, but they look different on the TV, it could look a small bit brighter on the Intel PC, but i'm not sure.

    btw about purevideo everything is disabled or set to be controlled by application in control panel so i dont think that is the problem.
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  8. I did some more testing, have not managed to solve this problem yet, but i did take some pictures with my camera to show the problem i'm having.

    Nvidia: http://imgur.com/rVsIDrJ

    Intel: http://imgur.com/TnTgK2m

    This is the weird thing, the problem actually also happens on my nvidia card, but only if i minimize or switch hdmi channel, which makes me think its a problem with color settings in a combination with what colors my TV can detect

    After minimizing window or switching HDMI channel on Nvidia: http://imgur.com/08hNDFv
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