macOS Sequoia (15.0) introduces a new permission that Ecamm Live needs for features such as:
NDI
Network Cameras ( via RTSP )
Stream Deck support (via the Ecamm Live Stream Deck plugin)
The following message should come up when launching Ecamm Live on Sequoia:
Please choose “Allow” when prompted, or these features will not work properly.
If you’ve seen this prompt and have already chosen “Don’t Allow”, you can grant this permission by enabling the toggle next to Ecamm Live in the Privacy & Security control panel of your Mac’s System Settings application. You can find this under “Local Network” once you have selected Privacy & Security from the left.