src/lib/time.ts

// Project runs at Chronixel's fps so source-frame trims stay integer-accurate.
export const FPS = 30;
export const msToFrame = (ms: number) => Math.round((ms / 1000) * FPS);
export const frameToMs = (f: number) => Math.round((f / FPS) * 1000);

export const fmtTime = (ms: number) => {
  const t = Math.max(0, ms);
  const m = Math.floor(t / 60000);
  const s = Math.floor((t % 60000) / 1000);
  const cs = Math.floor((t % 1000) / 10);
  return `${String(m).padStart(2, "0")}:${String(s).padStart(2, "0")}.${String(cs).padStart(2, "0")}`;
};