Getting an error message when using the Drupal video module…
warning: Division by zero in /…/sites/all/modules/video/includes/common.inc on line 17
Is a nagging message that you may get even if you are seeing the video player as explained in the bug report on - http://drupal.org/node/706806
In my situation, the problem cause was not covered by the described situations. It was rooted in the declaration of an unacceptable extension.
When creating the filefield, you may get this message:
=== Only web-standard videos are supported through the video widget. If needing to upload other types of files, change the widget to use a standard file upload ===
It means that you have specified an upload file extension that is not acceptable. If you do this, you will get the said error message even if you are trying to upload/play a commonly acceptable file such as swf, wmv, flv etc