Hi aerica,
Yes you can, with a little of Javascript. On your event that changes the timeline you should set the custom JS to something like:
Code:
//substitute myVideoId with the id of your video element
var video = document.getElementById('myVideoId');
video.pause();
//substitute myTimelineName by the name of your timeline
controller.goToTimelineByName('myTimelineName');
Along these, you can also use video.play(); to resume playing the video or video.currentTime = myTime; to set the position or rewind the video.
Hope it helps.