I've made my first time-lapse video today. This is a technique in which you capture an image every several seconds, merge these images into a video and the result looks like the time is moving very fast. Here it is:
To make it, I used my webcam connected to my laptop (because USB cable was to short to connect it to my desktop PC :) Of course a special program had to be used to utilize webcam this way, taking snapshot to a JPEG file every several seconds. The program I used is booru WebCam 2.0. It does a good job and it's free, opposite to many others tools of its kind. The result of this program working for several hours was 805 MB of files named like "image-4887.jpg". I had to use another program to convert them to a video.
This can be done with powerful and free VirtualDub. It's not so obvious how to do it though, because there is no "Import images" command in the menu. Instead, one have to know that it's enough to issue a standard File / Open video file command and open first image with it. VirtualDub automatically recognizes subsequent images as video frames. Now the only thing that remained was to set Video / Frame Rate, Audio / Audio from other file, setup filters (resize in my case), video codec and encode final video with File / Export as AVI.