Using different saved video files for A & B?

Hey there! I noticed in the MIDI channel mapping table that File Index A and File Index B are able to manipulated individually (37 & 46) and tried mapping those to knobs on my MIDI controller, but whenever I change one it updates the file displayed on both A and B, so it’s always layering the same video file on itself. Still a very cool effect, but I’m wondering if it’s possible to display different video files for A and B? And if so, how? Thank you!

Unfortunately no due to the pis limitation this is just an artifact. loading 2 files results in not useable framerates.