Hi there 
Im a bit lost here - I have installed the homekit integration (seperate instance in accessory mode) and included my camera (hik Vision).
Im using the H264 on the secondary stream and the “video_codec: copy” setting.
Everything works fine on my iPhone - but im not able to connect to the stream from AppleTV.
I have figured out that if I remove the “video_codec: copy” setting from the configuration, then the stream works on both apple TV and iPhone… but CPU goes high on the HA server.
Does anyone have a clue why “Video_codec:copy” doesn’t work with apple TV 4K (H264) ?