initPTSFn = function initPTSFn(timestamp, timeOffset) {
  return Object(_home_runner_work_hls_js_hls_js_src_polyfills_number__WEBPACK_IMPORTED_MODULE_0__["isFiniteNumber"])(timestamp) ? timestamp * 90 : timeOffset * 90000;
}
Initialize PTS
<p>
   use timestamp unless it is undefined, NaN or Infinity
</p>