Video may have killed the radio star, but I don't think it fits well on SuperUser.
There have been a small handful of questions and answers recently posted in video form. While these do qualify as "link only", I believe it may be helpful to either add lines to one of the existing Help articles on good answers, or perhaps add another help article clarifying that unless there is a compelling reason to do so, the content of questions and answers should be written out.
Here's a recent question where the entire "content" is in video: i don't know how to replace a line in notepad++