RPI4 - HDMI-CEC not working - Page 5 - Bug Reports - LibreELEC Forum
Using HDMI-CEC on a Raspberry Pi - Pi My Life Up
Amazon.com: USB3.1 USB3.0 HD Video Capture 4K HDMI IN / OUT 4K 60Hz 4:4:4 YPbPr CEC-USB3.0 stream 1080p 60Hz to DSLR Camcorder Action Cam for Game,Live Broadcast,Stereo Audio,EDID Switch,Windows,Mac Linux SP12HVC :
GitHub - xtreamerdev/cec: HDMI-CEC driver for Xtreamer and other RTD1283 based Linux devices