This method gives you a high-quality, custom look by using real photos of paper:
: Place the paper on a dark background. Take a photo. Crumple it slightly, take another photo, and repeat until it's a tight ball.
: Take a screenshot of the frame where you want the transition to start and print it out.
: Place a high-resolution image of crumpled or vintage paper on the top layer of your timeline.
: Set the paper layer's blend mode to Multiply or Overlay . This will apply the paper's texture and "tooth" to the video underneath.