CEC is completely different from DDC. You would use CEC to mostly send commands that a TV/AVR remote would have. While DDC has been created with computer moni

CEC is completely different from DDC. You would use CEC to mostly send commands that a TV/AVR remote would have. While DDC has been created with computer monitors in mind, for controlling things like brightness, contrast, volume, input etc. I’ve also wanted to use CEC for my Volum app to control AVR devices (https://lowtechguys.com/Volum https://lowtechguys.com/Volum). But I had to go with the HTTP API route and only support the AVRs that have network controls because CEC is absolutely not available on the Mac. Source: I’m the developer of Lunar (https://lunar.fyi https://lunar.fyi) another app for controlling monitors through DDC.