It sounds like you're referencing a specific video file titled — likely a custom or fan-made animation, possibly from a source like Femdom Productions , Giantess content , or a shrunken/ant-man combat scenario.
The keyword "Ant Men" connects this hypothetical video to a broader lost media genre. In the early 2010s, a niche group of animators on Newgrounds and Vimeo created "Micro-Verse" series. They borrowed from Honey, I Shrunk the Kids and Ant-Man (before the MCU film). Common themes included: Katelyn VS Ant Men - Under Soles.wmv