This really is a case of be careful what you are asking for...
IMHO, HomeKit video and HomeKit Secure Video (HSV) are some of the worst products/technology from Apple.
The User Interface is terrible, the features are very limited, and the restrictions are very severe.
No more than 5 cameras for HSV, uh, that just about kills it for anywhere here right away.
No local recording, no continuous recording. Right there, it's a toy and not usable as a real security system.
Everything goes to the cloud as an encrypted stream? Uh, really slow viewing, scrubbing, downloading/saving clips, - just about all normal operations constantly stutter/pause as data is pulled down from the cloud. Thumbnails of clips take forever to refresh.
Remote access? Everything looping through a HomeKit Hub as a huge opaque "black box" - good luck trying to troubleshoot when, not if, it doesn't work.
And forget about HomeBridge adding HSV support. I've tested several of the HomeBridge camera plug-ins (non HSV), and most of them simply fail when accessing remotely - completely unreliable. Not picking on the open-source folks (it's amazing it works at all), but if regular cameras barely work, I have no expectations they can get HSV working in any decent form.