Greetings fellow DIY'ers. Newby here. Gotta toilet that had begun to refill very slowly. The link below shows a video of my dirty fill tank (sorry

but you can see that it's slow to fill and hear that the water flow is sporadic.
Just thought I'd see what you guy's think would be the most probable culprit. Many thanks in advance for replies. I will do my best to give back.
GS
West Linn, OR
http://s599.beta.photobucket.com/user/gstump1/media/VIDEO0006.mp4.html