Has anyone interface OpenLP with a BlackMagic ATEM mixer? Our OpenLP PC feeds into an ATEM mixer together with camera feeds. Due to covid we cannot have a live service so all our songs are via lyric videos. What would be really helpful would be able to program up the Service so that when a video file ends, OpenLP would tell the ATEM mixer to make the switch to the next video input. This ought to be possible in a number of ways since there is a published API for the ATEM. Alternatively there are means to control the ATEM via MIDI controls. Before I start looking at this, I was wondering whether anyone has done it before?