There’s what goes on in the film biz and then there’s what really goes on in Tinseltown. That’s what documentary filmmaker Marina Zenovich (director of last year’s “Lance,” about disgraced biker Lance Armstrong) was seeking to get at with her new film, “What Happens in Hollywood.”

The documentary, which is now available on Roku, shows women, and some men, speaking candidly about the sexism and misogyny that is absolutely baked into the film industry, and has been since its founding by a group of rich men a century ago.

Perhaps no modern sports figure has gone from the heights of praise to the depths of public revulsion as spectacularly as Lance Armstrong, the disgraced former cycling champion who beat cancer, won several consecutive Tours de France, but then watched his legend implode after admitting to doping over the course of many years.

Armstrong’s unlikely rise and even more drastic fall