deeper - I'm going to shift the order of your comments around a bit in answering your question.
...In a Youtube video a Google guy says, that they don't recommend having two or more vids on one page with one unique URL. Every video sitemap should name one unique URL for one certain video.
I've seen many successful sites/pages that have had more than one video on a page. Usually, though, the videos are on closely related topics, topics that together form a unit which is distinct to that page. You might, for example, have a particular music video followed by a
Making of... video describing, say, how the special effects of that video were done. Or two Google Webmaster Help videos covering different aspects of related optimization problems might share a page and an article.
When the topics work well together and the page is well written, then interest holds and flows, and... with this kind of topical continuity, getting the visitor to scroll down is generally not a problem.
{1} want to integrate two videos on each page:
-an image video with a short introduction of me and my work: every page will get this one image video
-an individual video referring to the subject of each individual page: this should rank in Google.
The global image video jumps out at me as a likely problem... and the problem isn't just about Google. It's an issue for your users... which is in fact
why it's an issue for Google.
- It's very likely that the videos won't relate to each other in a way where they belong on the same page, particularly if they are separate videos (more on this in a moment).
- It will be a bad experience for a user coming to the page to expect a video on the subject of the individual page and to get instead a short introduction about you and your work, no matter how interesting you are. It's also not likely, with the setup you describe, that the page will rank for the page topic. For your pages to rank, it's important that each page feature what's unique about that page... which is to say that your on-topic video should be first.
- And having the image video on every page is also likely to a bad user experience. It's effectively duplicate content on every page. If visitors navigate around your site, they're going to be bumping into this content over and over. Introductions need to orient visitors in a page within a site, but they should never be repetitive.
In the mind of the visitor, an introductory video about you is, at best, likely to feel like a commercial. Conceivably, you could bury a short video introduction within each topical video as if it were an opening commercial (without the extra click), but I think it would still cost you visitors. On an information site, I doubt you would consider introducing each article with a half-page bio.
Certain popular sites, where the videos or content are sought after, can get away with commercials, sign-ins, etc, but excessive use of either will cause visitors to leave. I've seen situations on otherwise popular client sites where such obstacles have cost the site well over half its visitors.
What I would do is to have the introductory video just on an "about us/author" type page... and then have each of the other videos on their dedicated pages. That way, Google could much better discover what the unique focus of each page most properly should be. Visitors could choose to navigate to the About page to learn more about you, perhaps
once they have been motivated to do so by your videos. IMO, it doesn't work the other way around. You could of course also have thumbnail links and a link to your author/about page from your byline.
Or just doing it and not caring about Google?
IMO, you are completely missing the point. The intention of Google's algorithm is to send visitors to pages which most satisfy their queries. This is how Google improves its own visitor satisfaction.
You're seeming to want to do everything that fights your visitors' natural inclinations, and then holding it against Google because that approach won't rank well.
