This is the most common issue. It happens when the HDR color metadata (the instructions telling the screen how bright to get) is ignored, resulting in a flat image.
Sometimes, HDR videos use advanced audio tracks (like DTS or TrueHD) or rare video profiles that the standard MX Player package cannot decode smoothly.
Why does this happen? Does MX Player truly support HDR? And how do you stop your device from turning into a hand-warmer? This 3,000-word deep dive covers everything from hardware decoding to custom codecs and thermal management.