Blackmagic & pro capture
Any camera that appears as a video device — Blackmagic Pocket in USB webcam mode, ATEM Mini, Cam Link and generic UVC bridges — with the exact-rate capture path that stops cadence flicker.
- Test capture (3 s) lists every mode the device really supports; click one to apply it
- Direct devices bound by name, not index — macOS renumbering on hotplug cannot break the show
- DeckLink PCIe / Thunderbolt cards are not supported (they do not appear to AVFoundation / DirectShow)


