The 4K HDMI Chroma Key Master from AVMATRIX helps you facilitate efficient chroma keying in live production applications. The device features three HDMI inputs for foreground, background, and DSK key sources, as well as four HDMI outputs for PGM, clean PGM, matte, and AUX sources. These ports help deliver 4K60 video signals seamlessly. The keyer can handle both green and blue screens, along with auto and manual chroma keying options.