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Mikay²
Inspiring
October 16, 2018
해결됨

H.264 looks darker on Youtube/Chrome/Win 7

  • October 16, 2018
  • 3 답변들
  • 9029 조회

I recently noticed that our h.264 encoded videos look darker on Youtube and that our clinical white looks dirty. Now I have seen that this is the case when I watch the videos with Chrome on Windows 7, but not with Chrome on Windows 10.

Are there any suggestions how to solve this issue?

Our H.264 company preset uses hardware-coding/high profile/level 5,1

이 주제는 답변이 닫혔습니다.
최고의 답변: chrisw44157881

i have personally seen that different versions of chrome change the white point. you can even change chrome's handling of it.

Step 1: Open the Chrome Browser settings. Enter the URL: chrome://flags/ in the address bar of your Chrome Browser.

Step 2: Change the Color profile. Scroll down the page until the point "Force Color Profile". I Try "Default" to "sRGB". or other settings.

I have compared it against firefox and firefox is 100% perfect in youtube(at least on my system) Please keep in mind that different OS's might have triggered your graphics card to use different settings besides 0-255 in display properties as well.

3 답변

chrisw44157881
chrisw44157881답변
Inspiring
November 16, 2018

i have personally seen that different versions of chrome change the white point. you can even change chrome's handling of it.

Step 1: Open the Chrome Browser settings. Enter the URL: chrome://flags/ in the address bar of your Chrome Browser.

Step 2: Change the Color profile. Scroll down the page until the point "Force Color Profile". I Try "Default" to "sRGB". or other settings.

I have compared it against firefox and firefox is 100% perfect in youtube(at least on my system) Please keep in mind that different OS's might have triggered your graphics card to use different settings besides 0-255 in display properties as well.

    M
    Mikay²작성자
    Inspiring
    November 16, 2018

    Thank you Chris! Finally someone who knows what he is talking about

    Now here is the question: How do I have to export my videos so that this white point adjustment does not occur? Obviously, our competitors are able to upload videos so that #ffffff comes out as #fffffff. So there must be a way.

    chrisw44157881
    chrisw44157881
    Inspiring
    November 16, 2018

    if you import the new h.264 video back into premiere, the color should appear exactly the same. its when the web browser displays it, that it shifts. there was a old thread about hue shifts in h.264 but I think cc 2019 fixed that. I'd pixel sample the re-import into premiere.  There's other issues with youtube in general, using vp9 instead of h.264 changes how colors are encoded in youtube. you can try clicking re-touch in youtube and it might trigger a different encode to vp9 colors.

      M
      Mikay²작성자
      Inspiring
      October 19, 2018

      Here is an example with the same browser on the same OS and both on Youtube. On the left side is one of our videos while on the right side a video of another company. The other video looks clinically white while our video looks muddy, although this is just a completely white area in Premiere Pro. 

      It doesn't take a calibrated monitor to see that there is something wrong. One could argue that it is the player that produces the error, why then, isn't it producing this error when it plays the other video?

      The question is simple: How do I export videos so that #ffffff comes out as #fffffff? Other's are able to do it, so why shouldn't Premiere Pro/Media Encoder be able to do it?

      Thanks!

      Kevin-Monahan
      Community Manager
      Kevin-MonahanCommunity Manager
      Community Manager
      November 15, 2018

      Ever find a solution, mik? Let us know!

      Kevin

      Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
      E
      excited_Genie16B8
      Legend
      October 16, 2018

      How your material looks on a calibrated display from a hardware player is all that you can control.

      How it looks anywhere is is beyond your control.

      M
      Mikay²작성자
      Inspiring
      October 16, 2018

      I (partially) disagree.

      If others are able to make white look white, why should Premiere Pro not be able to do that? I just checked it on the same browser. In every other video that I found with white areas, white was white and not some dirty #fffffd version of it. So there must be an explanation why this happens.

      E
      excited_Genie16B8
      Legend
      October 16, 2018

      You're reasoning is off a little.

      You need to start by making sure you're seeing the signal accurately.  To do that, you use a hardware device, something that won't by itself introduce any changes to the signal.  You connect that to the best quality display you can afford and calibrate it to industry standard specs, also to make sure that the image is presented as it really is.

      If the player or the display are introducing changes to the signal, then you're not seeing it accurately.  Most hardware devices won't introduce any changes.  This included Blu-ray players and I/O devices like the AJA Kona.  Software players can and often do alter the signal, so they're just not reliable enough to use for quality control purposes.

      Browsers fall into the category of software players.

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