Function extractResolvedMedia

packages/core/src/compiler/timingCompiler.ts:230–260

(html: string)

 * Used by callers to validate declared durations against actual source durations.
 */
export function extractResolvedMedia(html: string): ResolvedMediaElement[] {
  const resolved: ResolvedMediaElement[] = [];

  const mediaRegex = /<(?:video|audio)[^>]*>/gi;
  let match: RegExpExecArray | null;
  while ((match = mediaRegex.exec(html)) !== null) {
    const tag = match[0];
    const id = getAttr(tag, "id");
    const durationStr = getAttr(tag, "data-duration");
    if (!id || durationStr === null) continue;

    const duration = parseFloat(durationStr);
    if (!Number.isFinite(duration) || duration <= 0) continue;

    const isVideo = /^<video/i.test(tag);
    const startStr = getAttr(tag, "data-start");
    const mediaStartStr = getAttr(tag, "data-media-start");

    resolved.push({
      id,
      tagName: isVideo ? "video" : "audio",
      src: getAttr(tag, "src") ?? undefined,
      start: startStr !== null ? parseFloat(startStr) : 0,
      duration,
      mediaStart: mediaStartStr ? parseFloat(mediaStartStr) : 0,
      loop: hasAttr(tag, "loop"),
    });
  }

  return resolved;
}

/**
 * Clamp existing data-duration and data-end on media elements.