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.
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.