Welcome to the fascinating world of Eulerian Video Magnification and other motion magnification techniques currently being explored at MIT.
From the NYTimes:
"A 30-second video of a newborn baby shows the infant silently snoozing in its crib, his breathing barely perceptible. But when the video is run through an algorithm that can amplify both movement and color, the baby’s face blinks crimson with each tiny heartbeat.
"The amplification process is called Eulerian Video Magnification, and is the brainchild of a team of scientists at the Massachusetts Institute of Technology’s Computer Science and Artificial Intelligence Laboratory."
Read more: http://adafru.it/c2G