Harisa Lalic

I have been in a similar situation, the answer is definitely changing the shutter speed/angle on the video camera. When I did this, I was projecting 16mm film and using a Panasonic hvx200, typically if your camera is in a relative shutter mode, it will automatically adjust the shutter to match what equals a 180 degree angle in film terms, but essentially it typically films a shutter at twice the fps to get a "normal" looking image, so like 24 fps at 1/48th shutter. But to get the flicker to go away I switched the shutter on the video camera, I cannot recall right now at what setting exactly I filmed the whole thing, if you want specifics I can message them.