I have two cameras connected to Apple HomeKit but only one camera records

Hi MarioIusi,

Thanks for contacting Apple Support Communities!

We understand that you use two cameras to record video using HomeKit, but only one of them records, correct?

Are you using HomeKit with iCloud? If so, you will need at least a 200 GB iCloud Storage plan to use up to five cameras with HomeKit and iCloud as outlined here: Store encrypted security camera footage in iCloud with HomeKit Secure Video - Apple Support

"Store and analyze security camera recordings

With HomeKit Secure Video, you can add your home security cameras in the Home app to record your footage and view it from anywhere. It’s all end-to-end encrypted, and none of the video counts toward your iCloud storage. You can access HomeKit Secure Video on your iPhone, iPad, iPod touch, Mac, or Apple TV.

The video is privately analyzed by your home hub using on-device intelligence to determine if people, pets, or cars are present. You can view the last 10 days of activity in the Home app.

The number of HomeKit Secure Video cameras you can add to Home depends on your iCloud+ plan.

• 50 GB plan: Add a single camera.
• 200 GB plan: Add up to five cameras.
• 2 TB plan: Add an unlimited number of cameras."

This resource outlines how to set up HomeKit Secure Video if you need it: Set up HomeKit Secure Video on all your devices - Apple Support

We hope this helps you.

Take care!