Places file at video cut marker. Unmeasured 2.03s leading silence causes impact to land over 2 seconds late!
Measures first true acoustic hit ($t = 2.03\text{s}$) and shifts start by $-2.03\text{s}$, locking strike to Frame 0.
Everyday Analogy: When an AI generates a sound effect, it often leaves 2 seconds of invisible silence at the beginning of the file. Dropping that file onto a video cut is like watching a movie punch land in total silence, and hearing the "BAM!" two seconds later. Click below to watch the visual flash and feel the delay vs THIRI frame-lock.
Live Python/FFmpeg transient peak alignment math computed from your sliders: