Answers.Body: <p>I think I found a solution to my problem.</p>
  <p>The issue seemed to be in the Windows HD Color settings.</p>
  <p>Thus, I reset the calibration of my built-in display for HDR content in Windows. The option is a bit tricky to find, because it is in a deep Windows graphics menu. However, you may find a comprehensive description of the process to follow at the following link:
  <a href="https://support.microsoft.com/en-us/windows/calibrate-your-built-in-display-for-hdr-content-in-windows-de1c66fa-6cc0-b327-e73a-1bac6bd46bc0" rel="nofollow noreferrer">https://support.microsoft.com/en-us/windows/calibrate-your-built-in-display-for-hdr-content-in-windows-de1c66fa-6cc0-b327-e73a-1bac6bd46bc0</a></p>
  <p>I hope this is helpful for people facing the same issue.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-09-25T09:44:48.560Z
Answers.Text: …which just goes to show what a hokey bag of cr*p Windows HDR is. It's not a video standard it's guesswork on top of guesswork. Avoid like the plague it is for professional applications. </rant>  ;))
Answers.UserDisplayName: Tetsujin
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-09-09T19:02:44.677Z
Answers.Text: The bug has come back (from a Windows update?) and the old trick with HDR content no more works. Any ideas (solutions?) are very welcome. This issue makes me crazy...
Answers.UserDisplayName: Sulli
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-09-24T21:05:15.543Z
Answers.LastActivityDate: 2022-09-24T21:05:15.543Z
Answers.UserDisplayName: Sulli
Body: <p>For a few days, when I play a mp4 video in Windows Media Player (WMP), there is something like a grey filter/overlay.
  Thus, the whites are greyish and blacks lack depth. This problem is only encountered when playing the video with Windows Media Player. If I use VLC or the Windows movies &amp; TV app, the rendering is as expected.</p>
  <p>The picture below illustrates the problem well:
  <a href="https://i.sstatic.net/vfCQM.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/vfCQM.png" alt="enter image description here" /></a></p>
  <p>I have been suspecting an issue with the rendering dynamic range: 16-235 vs. 0-255, but:</p>
  <ul>
  <li>Video options in WPM are rather poor and there are no such parameters to be set;</li>
  <li>In my graphic-card setting panel, I was not able to find any relevant parameters (I am using the Radeon RX Vega 10 graphics of my laptop &amp; AMD software Adrenalin edition. No HDMI cables).</li>
  </ul>
  <p>It might be something else related to a Windows update (I am using Windows 10 21H2), but I don't really know what.</p>
  <p>Any help is very welcome.</p>
  
Tags: <mp4><windows><vlc><rendering>
Title: Grey overlay when reading mp4 files in WMP
UserDisplayName: Sulli
ThreadText: # Grey overlay when reading mp4 files in WMP
  
  (Asked by: username_0 on 2022-09-24)
  
  For a few days, when I play a mp4 video in Windows Media Player (WMP), there is something like a grey filter/overlay.
  Thus, the whites are greyish and blacks lack depth. This problem is only encountered when playing the video with Windows Media Player. If I use VLC or the Windows movies & TV app, the rendering is as expected.
  
  The picture below illustrates the problem well:
  [![enter image description here](https://i.sstatic.net/vfCQM.png)](https://i.sstatic.net/vfCQM.png)
  
  I have been suspecting an issue with the rendering dynamic range: 16-235 vs. 0-255, but:
  
  * Video options in WPM are rather poor and there are no such parameters to be set;
  * In my graphic-card setting panel, I was not able to find any relevant parameters (I am using the Radeon RX Vega 10 graphics of my laptop & AMD software Adrenalin edition. No HDMI cables).
  
  It might be something else related to a Windows update (I am using Windows 10 21H2), but I don't really know what.
  
  Any help is very welcome.
  
  **Tags:** mp4, windows, vlc, rendering
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_0 on 2022-09-24. Score: 0
  
  I think I found a solution to my problem.
  
  The issue seemed to be in the Windows HD Color settings.
  
  Thus, I reset the calibration of my built-in display for HDR content in Windows. The option is a bit tricky to find, because it is in a deep Windows graphics menu. However, you may find a comprehensive description of the process to follow at the following link:
  <https://support.microsoft.com/en-us/windows/calibrate-your-built-in-display-for-hdr-content-in-windows-de1c66fa-6cc0-b327-e73a-1bac6bd46bc0>
  
  I hope this is helpful for people facing the same issue.
  
  > **Comments:**
  > **username_1**: …which just goes to show what a hokey bag of cr*p Windows HDR is. It's not a video standard it's guesswork on top of guesswork. Avoid like the plague it is for professional applications. </rant>  ;))  
  > **username_0**: The bug has come back (from a Windows update?) and the old trick with HDR content no more works. Any ideas (solutions?) are very welcome. This issue makes me crazy...  
  
  ---
  
  