Function auto_zoom_segments 

pub fn auto_zoom_segments(
    clicks: &[ClickEvent],
    fps: u32,
    cfg: &AutoZoomConfig,
) -> Vec<ZoomSegment>

Generate auto-zoom regions from a click log.

Clicks within ~1 s of each other form one cluster; each cluster becomes a zoom that opens ~0.3 s before the first click, holds cfg.hold_time_ms after the last, and targets the cluster’s centroid at cfg.max_zoom. Sub-half-second windows are dropped, and adjacent windows are clamped so they never overlap. Returns an empty list if detection is disabled or there are no clicks. The regions are concrete Manual-targeted zooms so they punch into the click immediately under the zoom engine; the user edits them like any other zoom.