The only way is to have the LP-16 act as master as it can’t be controlled automatically by anything externally.
That depends on what the video player is able to support.
There are several possibilities:
– Start the video by Midi and just let it play along.
– Playback an LTC timecoding audio track with the LP-16 which syncs your video playback in realtime.
Are the videos pre-made and just need to be played back or is the video artist doing video in realtime but needs a syncing signal?