Enabling HDR (High Dynamic Range) on MX Player generally relies on and compatible device hardware rather than a separate "HDR plugin" installation. While custom codecs are often required for audio formats like EAC3, video enhancements like HDR are primarily handled by your device's decoder and display capabilities. How to Enable HDR Support in MX Player
You do not need to hunt for a special "MX Player HDR install" file. The solution lies in the settings: mx player hdr support install