bind time update on old video when we bump into the switch point and ready we switch
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
                });
              }
            }