Board Thread:Wiki Discussion/@comment-5632187-20140807140231/@comment-3492791-20140807222001

Videos that are instructive demonstration are different than personal works. A Dark Souls Machinma is not ok, but a video showing you how to get Avelyn is ok. Now if that video goes on for 20 minutes about everything you did before and after getting Avelyn it lacks concision and is no ok.

I'm not sure if by "original art work" you mean original characters or being the creator of the work. The former is clearly not acceptable, and to the former the issue is not that of permission of crediting the artist but rather that fan art is not part of the game or its development.