Just kidding - I didn't write a paper about it, nor did I conduct a rigorous study. Most of the Google Ads I have seen came via various Google Twitter accounts, like https://twitter.com/lifeatgoogle (Life at Google seems to be dedicated to hiring people for Google).

So my filter bubble might be to blame. I haven't seen the video you mentioned which features a man.

(Edit: I just scrolled through the first several dozen tweets from "Life At Google - I think there is definitely a bias to only show female engineers there.... However, it is of course only one Google Twitter account dedicated to hiring, I don't know how many others exist. Maybe it was created explicitly to target women and minorities, but then maybe they should somehow say so).