File Name: interval_logic_and_multiple_begins.htm Expected Behavior: at t=5 video2 (1st interval) starts. at t=10 video1 (1st interval) starts 5 seconds into the video. at t=11 video1 (1st interval) disappears. at t=11 video2 (1st interval) disappears. at t=11 video1 (2nd interval) restarts 5 seconds into the video. at t=11 video2 (2nd interval) restarts 5 seconds into the video. at t=16 video1 and video2 (2nd intervals) disappear.