The behaviour of the scrollwheel in totem's seekbar is reversed from what the user (me) would expect.

Scrolling down rewinds the file instead of forwaring it.

Other information:
seeking forward should be the action when scrolling down - since that matches the behaviour of the scrollwheel every else.

In documents you scroll down to see what comes next (not what was written before)
If you like to see it from an "interaction with the widget" view instead of a "action that should be performed" view:
When using the scrollweheel over an horizontal scrollbar, it moves to the right, not to the left - so should the handle of the seekbar.