I found this simple but neat trick posted by a YouTuber member.
It involves two videos (posted below) concurrently playing together to produce a slightly different experience for the viewer. What you need to do is to play the first video (E.S. Posthumus – Unstoppable) and then paused it at 0:04 seconds. Now go to the second video (Immortals -Official TrIler [HD]) and play it. Once the second vide starts playing, go back to the first video and let it continue to play. Watch the second video and enjoy!
Try it out, its pretty cool!
Dynamic Flux 