export function paddingNumber (num: number, length: number = 2) {
  const numToStr = num.toString();
  if (numToStr.length >= length) return numToStr;
  const paddingArr = new Array(length - numToStr.length);
  paddingArr.fill('0');
  return [...paddingArr, numToStr].join('');
}

export function formatVideoDuration (duration: number) {
  return `${paddingNumber(Math.floor(duration / 60))}:${paddingNumber(duration % 60)}`;
}