Check Previews of Specific Moments in a Video
Instead of just watching the most played part of a video, you can instead get a small preview of what that section looks like by using the slider.
What you need to do is press and hold the slider on a video and then swipe the slider up.
You should see some new thumbnails appear from the bottom of the video. You can release the slider and swipe through the thumbnails to find a part of a video you want to watch.