Function durationFromMedia

packages/core/src/runtime/clipTree.ts:69–76

(el: Element)

}

function durationFromMedia(el: Element): number | null {
  if (!(el instanceof HTMLMediaElement) || !Number.isFinite(el.duration)) return null;
  const mediaStart =
    parseNum(el.getAttribute("data-playback-start")) ??
    parseNum(el.getAttribute("data-media-start")) ??
    0;
  return el.duration > mediaStart ? el.duration - mediaStart : null;
}

// Used only to filter out zero-duration (decorative) elements at build time.
function resolveDuration(