topic Re: UHD620 video hardware decoding cause inaccurate color in Graphics

UHD620 video hardware decoding cause inaccurate color

mchan471 — Wed, 29 Nov 2017 15:36:35 GMT

When I watch youtube with chrome, I found that the the color of video was inaccurate, i.e. green being too green, orange being too yellowish etc.. And if I pause the video or move my mouse to make the video control to show up, the color returns to normal. If I disable the hardware acceleration for video in chrome://flags, the color is always normal. So I'm pretty sure that it's the Intel UHD620 videl hardware decoding that causes the inaccurate color. Is there any way to fix this issue? The problem only occurs when video is played in full screen.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Wed, 29 Nov 2017 21:41:08 GMT

Hello mteechan,

I understand you are getting inaccurate colors when watching a YouTube video in Google Chrome.

Let me apologize for any inconvenience this issue may be causing to you.

In order to help you better I would like to gather more information about the configuration you have in the computer. Please attach to this thread the .txt file the Intel® System Support Utility will generate https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility

Does the issue happen if you play the same video on different browser?

To attach a file, you must click "Use Advanced Editor" on the upper right hand corner of the response box, then the "attach" option will appear on the bottom right hand corner of the response box.

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Wed, 29 Nov 2017 22:16:41 GMT

Yes, this issue also occurs in Microsoft Edge, but the difference is that in Edge the color won't change to normal when video is paused.

Here is the information file.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Wed, 29 Nov 2017 22:21:27 GMT

https://youtu.be/Z1TR4WbHN5o?t=93 Color Gamut: Home Theater Geeks 227 - YouTube Here is a video with a color diagram, which may help with reproducing the issue more clearly.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Thu, 30 Nov 2017 20:20:30 GMT

Hello mteechan,

Thanks for the information you sent to me.

Since your computer comes with two video cards there is a special graphics driver that will make both video cards work fine with each other. This graphics driver is provided by the computer manufacturer only. I recommend reinstalling the graphics drivers your computer manufacturer provides on their website.

We can try installing generic drivers from our website, but I cannot guarantee our drivers will be able to work fine. If the drivers I am going to provide do not work correctly please reinstall the graphics drivers the computer manufacturer provides for your system.

Please download Intel graphics driver from this link https://downloadmirror.intel.com/27266/a08/win64_15600.4849.zip https://downloadmirror.intel.com/27266/a08/win64_15600.4849.zip

Please download NVIDIA* driver from this other link http://www.nvidia.com/download/driverResults.aspx/127269/en-us http://www.nvidia.com/download/driverResults.aspx/127269/en-us

Once both drivers have been downloaded uninstall our graphics driver first. On the keyboard press WinLogo key + r, then type in devmgmt.msc, double click on Display Adapters -> Intel HD Graphics -> Driver tab -> Uninstall -> Select the check box Delete the driver software for this device -> OK, but do not restart the computer yet.

Please also uninstall NVIDIA* driver. In Device Manager double click on Display Adapters -> NVIDIA GeForce MX150 -> Driver tab -> Uninstall -> Select the check box Delete the driver software for this device -> OK, and then restart the computer.

Once both video drivers have been uninstalled please reinstall our graphics driver first using the steps that are on this YouTube video https://www.youtube.com/watch?v=S1KzoQDjMMY https://www.youtube.com/watch?v=S1KzoQDjMMY

Once our graphics driver has been installed you can reinstall NVIDIA* driver.

Test the system, and let me know if issue persists or not.

The content on the above site is not controlled by Intel. This information is offered for your convenience and should not be viewed as an endorsement by Intel for the merchants or services offered there.

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Sat, 09 Dec 2017 01:43:29 GMT

Hello mteechan,

I was wondering if you still need assistance regarding the inaccurate colors you are getting when watching a YouTube video in Google Chrome. In case you still need assistance just let me know.

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Wed, 13 Dec 2017 17:52:19 GMT

Yes. I've tried the latest general driver, but the problem is still present.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Thu, 14 Dec 2017 17:15:56 GMT

Hello mteechan,

I am sorry to hear you are still having issues with your computer.

We recently released newer version of the graphics driver, and I would like you to give it a try. Please download it from this link https://downloadmirror.intel.com/27355/a08/win64_15.60.01.4877.zip https://downloadmirror.intel.com/27355/a08/win64_15.60.01.4877.zip

Please install the driver with the steps that are on this YouTube video https://www.youtube.com/watch?v=S1KzoQDjMMY https://www.youtube.com/watch?v=S1KzoQDjMMY

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Mon, 18 Dec 2017 15:06:43 GMT

I've installed the latest driver, but the color is still off. I don't think it's a unintentional bug, but some intentional "color enhancement". I need to know how to turn this effect off.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Tue, 19 Dec 2017 23:29:10 GMT

Hello mteechan,

I am sorry to hear issue persists even with latest graphics driver.

Color calibration is now handled by the operating system itself, not by our Intel® Graphics Control Panel. Have you tried calibrating colors from Windows 10*? The following link will show you how https://www.windowscentral.com/how-calibrate-your-pcs-monitor-windows-10 https://www.windowscentral.com/how-calibrate-your-pcs-monitor-windows-10

Let me know if issue persists or not.

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Sat, 23 Dec 2017 03:35:29 GMT

It's not that the screen's color is off, but the video. If I turn off hardware acceleration in Chrome, so that Chrome uses CPU's software decoding, the color is normal. If I turn on hardware acceleration, so that Chrome uses UHD 620's hardware decoding, the color is abnormal.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Fri, 29 Dec 2017 23:30:57 GMT

Hello mteechan

I am sorry to hear issue persists even with the latest graphics driver.

To assist you better on the case could you provide the following?

Have you tried other browser besides Windows Edge and Google Chrome?

What is the version of browsers?

Review if Windows® is up to date?

Can you provide an example of error with a picture or video?

Have you tried using the laptop connected to different display?

Regards,

Leonardo C.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Tue, 02 Jan 2018 09:59:10 GMT

1. No, but I don't feel like using other browsers.

2. My browsers are all up to date.

3. My Windows is version 1709.

4. If I take a screenshot, the color in the screenshot is normal. So I have to use a camera to capture what is actually displayed. Here are the best I can do. I intentionally make them slightly out of focus to avoid moire pattern.

The right one is the normal one. The left one is abnormal, as you can see the green is oversaturated, and the grid lines are hardly visible.

The video I test is https://youtu.be/Z1TR4WbHN5o?t=173

5. I don't have other displays, so I can't do that.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Tue, 02 Jan 2018 10:31:26 GMT

Here is a video demonstrating this color issue.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Tue, 02 Jan 2018 19:48:51 GMT

Hello mteechan,

Let me do further research and come back to you. I will post information on this thread as soon as I have it available.

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Fri, 12 Jan 2018 01:18:19 GMT

Hello mteechan,

I tried to reproduce the issue in our lab, but I did not get the same behavior. I tried with a monitor and also with a TV in single monitor with different video cables. I used the following configuration:

Intel® NUC Kit NUC7i3BNH
Intel® HD Graphics 620
Graphics driver 23.20.16.4901 and also tried 23.20.16.4877
Windows 10 Pro 64-bit (Build 16299)
CTL IP2152 - LED monitor using USB Type-C to Displayport* adapter
LG 55UH8500 TV using HDMI to HDMI cable
Google Chrome version 63.0

I used the exact same YouTube video you used, I tested Google Chrome with and without hardware acceleration, but I did not notice any change in the colors.

If possible try resetting the PC. This link will show you how https://support.microsoft.com/ml-in/help/12415/windows-10-recovery-options https://support.microsoft.com/ml-in/help/12415/windows-10-recovery-options

Let me know if issue persists or not.

Regards,

Fred D.

Re: UHD620 video hardware decoding cause inaccurate color

BAksu — Sat, 13 Jan 2018 19:49:55 GMT

I made account to help you because I got my new laptop this week and got this problem in chrome

I tried EDGE and no problem was have.

In chrome Go Setting->Scroll down and click Advanced->System->Disable "Use hardware acceleration when available" restart chrome and your problem gonna solve.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Mon, 15 Jan 2018 15:42:57 GMT

Edge is also subject to this problem. It's just that Edge's video color doesn't return normal when video is paused, so no visible change in color is observed, unlike chrome, which shows the correct color when video is paused, resulting in color change.

I don't want to disable hardware acceleration, because it is much more power efficient.

Re: UHD620 video hardware decoding cause inaccurate color

mchan471 — Mon, 15 Jan 2018 15:48:19 GMT

Did you test in theater mode? The problem seems not to occur in youtube theater mode.

Re: UHD620 video hardware decoding cause inaccurate color

idata — Mon, 15 Jan 2018 23:52:27 GMT

Hello mteechan,

Yes, I tried default view, theater mode and full screen with and without hardware acceleration.

Regards,

Fred D.