Let OBS use your camera

OBS blocks Browser Sources from opening a camera unless it is started with one extra option. Run this once and every future OBS launch will just work.

Then

1. Quit OBS completely — not just the window; check the tray.
2. Start OBS again from its normal icon.
3. Your Efekti source will show your camera instead of this message.

Worth knowing: this option lets any Browser Source in OBS use your camera and microphone without asking — not only Efekti. OBS does not prompt for these permissions. Only add Browser Sources from people you trust.