I have also tried restarting the roku, restarting the tv, I have changed the display type from auto to 720/1080 etc and then back to auto because it doesn't help. I see airplay is on, requires code the first time only, the subtitles, about airplay and homekit which correctly labeled to our 'home'. If I click into settings looking for a setting that isn't playing nice. The settings show the network and the device name which all matches. It never actually plays the video or audio. Then a screen loads on roku black at first then gives the words Airplay and then goes to settings. The quicktime video (a replay of a zoom screening in this case but it happens on all of them) goes black on the macbook pro. The IP address is different from my computer. It is on the same network and is added to my 'Home' via apple. I open the video in quicktime and click the airplay icon and select the roku ultra device. I have a samsung 4k tv with a roku ultra (see specs below). Trying to airplay from my macbook pro to the roku in my office.

How to airplay from mac to tcl tv