You'd need some radically different zig-zag binding process ... sounds like a lot of effort but might pay off.
Just to be clear I'm not saying duplex print, I'm saying flip right and flip left, same side up
Building on that: there's a common children's magic trick involving a flip book that magically "colors" its pages (https://www.magicinc.net/products/fun-magic-coloring-book?va...)
It works by moving your thumb to a different position while flipping the pages -- every Xth page is cut at slightly different lengths, so when you move your thumb to the next position, different pages become visible during the flip
Using this trick you could show multiple different video clips in the flipbook just by moving your thumb to a different spot
Of course you're doubling the page count regardless of the approach ... that's likely unavoidable.