I think videos can be an excellent way of assisting users and a valuable tool in some cases.
Video has become a component of life for a large swath of the global population over the last several years. 1.5 million Droid based phones are being activated daily among the wireless carriers!
I think it only makes sense to have a better video support mechanism as a tool. What the OP cannot explain properly could be easily conveyed with 45 seconds of video.
I know @bobcross was concerned with an autoplay feature effecting users that are accessing the site from secure and bandwidth restricted corporate environments, I went to the sci-fi SE site and none of their videos were set for autoplay. I don't see this as an issue simply because the verbiage will still be the primary vehicle in delivering the question and describing the attributes of the issue. The video as a simple add-on, in cases where it's relevant.
Another benefit to video is that SEO (search engine optimization) has an attribute for displayed video. Displayed video in websites helps the drive the ranking of a site higher, at least in Google's last few iterations of their SEO algorithm.
I think there are multiple benefits to enabling this feature.