Tue Sep 12, 2017 7:51 pm
I have a need to do a live key at an event.
So camera will shoot presenter on a retroreflective BG, some device will composite that over a new background, and the result will be sent to a projector.
If I wanted to minimize the latency from the CMOS sensor to the camera output and minimize the latency of the keying process, what camera and keying system should I use?
Are BMD studio cameras using SDI the best option? Or is HDMI better? Because I'm keying, I'd prefer a 4:4:4 output, but BMD doesn't make that right? Would outputting UHD 4:2:2 to use for a HD projector add latency from the camera?
Would an Ultimatte have less latency than a Decklink and software key? There's no UHD Ultimatte, right? Are there known good solutions for live keying other than Ultimatte?
Chad Capeland
Indicated, LLC
www.floweffects.com