A still image of a video is presented in the top left area of this window. By clicking on the image, you switch between two images. In this applet the distance between the two images - which are frames of a video - is usually greater than 1. This means there are e.g. 5 frames between the two presented to you. This is for presentation purposes. When compressing a video usually two adjacent frames are compared.

Now click on the image to get a feeling for the motion that takes place from image01 to image02.

Click the "Next"-button to proceed.