Presently, the format used for videos on this webpage is changed from 'divX' to 'mp4' (H.264, AAC).
While this should not impede navigation of this webpage some figure captions or video-clip descriptions (duration, size, format of the video) might not be accurate.
Please excuse the inconvenience caused during this phase of reorganization.
Sofar, video clips on this page were provided in the widely spread DivX® format which seemed to be a good compromise in quality, file size and compatibility.
To view these DivX® video clips you either need the required plug-in for your browser or the video codec to play the clips with any media player or a suitable player software.
On the official DivX® webpage a player or codec for MS Windows and Apple Computers can be downloaded for free.
To play the clips within in your MS Windows or Apple internet browser
you need the DivX® 'webplayer' plug-in:
If you prefere to download the clips to your computer
you need the DivX® player software:
Player software for other operating systems can be found on the Internet.
If you want to learn more about video codecs in general you can start at wikipedia where you also find an article on divX.