code: function oldVideoTimeupdate() {
                var currentTime = _this2.kernel.currentTime;
                if (bias <= 0 && currentTime >= idealTime || bias > 0 && (Math.abs(idealTime - currentTime) <= bias && newVideoReady || currentTime - idealTime > bias)) {
                  chimeeHelper.removeEvent(_this2.dom.videoElement, 'timeupdate', oldVideoTimeupdate);
                  chimeeHelper.removeEvent(video, 'error', _videoError, true);
                  if (!newVideoReady) {
                    chimeeHelper.removeEvent(video, 'canplay', videoCanplay, true);
                    chimeeHelper.removeEvent(video, 'loadedmetadata', videoLoadedmetadata, true);
                    kernel.destroy();
                    return resolve();
                  }
                  return reject({
                    error: false,
                    video: video,
                    kernel: kernel
                  });
                }
              }
docs: bind time update on old video when we bump into the switch point and ready we switch