With note to the points made by @meltam6554 and @natural.thought, I and many of us learn by reading and are entertained by watching, and while some learn best by visual methods others confuse learning from being entertained. However I still subscribe to @syncretic's post. But thinking on the topic, here goes.
There is a conundrum for whether and how to make videos. If they are there for eye candy they should not be unless that is the topic. If they provide value added be it additional information, explanatory commentary, or entertaining presentation, well done. However a room full of people will often disagree on any particular video because they are each individuals. Some people are not going to read more than a paragraph or few of anything before getting bored but will watch a valuable or vapid video for 30+ minutes. Some of us do not have the patience to have to watch a 3 minute video when we can read the information in 20 seconds.
Compounding that, I and most men are most comfortable in what is termed 'report' communication. We want it short, direct, and to the point. My partner is probably a fairly typical lady who communicates using 'social information sharing'. I and those like me get impatient for the social communicators to get to the point, and we often think the points get lost in the social aspects because we increasingly tune out or come to conclusions (premature or right on) after a certain amount of what we perceive as irrelevance. Those in the social spectrum think we report types are terse or worse. Catering only to one type communicator is a losing proposition because it loses the rest of the audience, but trying to suit both requires hitting a sweet spot where neither gets perturbed, and that is not easy.
Moving on, one of the great shortcomings in browsers and web content is the auto-play. There should be an obvious switch to turn it on/off globally, and possibly by web site through exceptions. But there is not although it can be done in various ways on various browsers. A pop up video window that does not start does not bother me; those that auto-start do, especially those that care not whether they are in the current tab or a background tab, and all play at once; they are perhaps the single most irritating feature of the modern internet save for (anecdotally) the NBN itself, that I have yet to meet with (and am in no great hurry to do so).
FWIW my related discovery of the last months is that if you disable auto-play in firefox it also inhibits facebook chat, and only a second sense links turning off auto-start with chat suddenly not working. Conclusion? Fixing one irritation can cause another.
End of ramble.