Blackmagic Design UltraStudio Recorder 3G

The has been an excellent purchase for us for recording and producing online.
Well made and good quality product that compliments the rest of the system that we have. Operates well with the BM Atem Studio unit which in turn is run off an iMac.

The ability the take the signal in through thunderbolt allows greater control of latency issues that have been experienced with other products, allowing media and audio to be brought into the iMac together.

If you are buying this to connect a webcam or another camera for live streaming via HDMI to the computer (like I did), this is not a good option. The delay is unacceptable, even with very short-run cables (under 1m).

I didn't try with SDI because I don't have such a camera.

Also, don't even think that USB-C cable is the same as Thunderbolt. It will not be accepted (especially by the Mac OS) and the Recorder is not detected.

Device works great on my M1 MacBook Pro. Silky smooth frame rate and full colour space... no problems at all in OBS, or any other app like Zoom. Have had no problems with the device not showing up.