Motion is a program that monitors the video signal from one or more cameras and is able to detect if a significant part of the picture has changed. or in other words, it can detect motion.
motion is a command line based tool. it has no graphical user interface. everything is setup either via the command line or via configuration files.
the output from motion can be:
- jpg files
- ppm format files
- mpeg video sequences
also, motion has its own minimalistic web server. thus, you can access the webcam output from motion via a browser.