Your door trim AP3956267 doesn't fit the numbers provided for the end caps. Also your video doesn't match the door trim part that you want to repair.
Answer Clifford, the lower door trim, part number 2266738, uses end caps part number 2195916K. The video is there to give you a brief idea on the replacement process of this part, your model and parts may differ. Thanks.
Does the trim, AP3956267 fit into the end cap AP 3842367?
Answer Hi Nancy. Yes, door trim 2266738 will fit into 2195916K this is the same part used on the left and right side. Hope this helps!