Why it worked
The video leverages a popular trend (Kage Bunshin no Jutsu effect) and provides a clear, easy-to-follow tutorial using a readily available template within a popular editing app (CapCut). This combination of trendiness and accessibility makes it highly shareable and likely to be replicated by users.
Summary
The video shows a split screen. On the top, a man explains how to achieve a viral video effect. On the bottom, a woman demonstrates the effect, which involves a swirling animation and a glitch effect. The video then transitions to a phone screen showing how to use a CapCut template to recreate the effect.