Neither gives any guarantee. Both static text and videos can be done well and badly. But I usually find it useful to have both. A video is like being guided through their vision of what the thing is (a "push" message). This can be annoying to many nerd types who want to cut through all that and just want to "pull" the info they need, for themselves, at their own fast pace, quickly identifying it and not being spoonfed. But the typical user is not like this, and prefers the spoonfed/edutained approach.
Yes that's the trick. And much more. If you have any sort of content, you should express it as a slideshow, a white paper, a blog post, a video, a podcast, etc. Get it out in as many forms as you can. Maybe even performative dance or song if you've got that energy.
Needless to say, usually if my choices are video or nothing, I'll choose nothing and figure it out myself.
Instead we've worked out how to get the LLM to make videos.