Chris Blattman links to this very interesting image, charting film genres over time.
As you can see, this charts some expected but interesting phenomena–the decline of westerns, the rise of pornography, the consistent production of comedy.
There are a couple of problems here though. First, a short is not a genre and it makes no sense to have that as a separate category. Yes, 50% or more of early silents were shorts. But they were short comedies, short westerns, etc. Why are these not included in the other categories? Many of today’s shorts might fall under an “experimental” category, which could make sense. But for silent film, it really undercuts itself.
I’m also curious as to the lack of science fiction in the early years. I know it was hardly the popular genre of today. But a lot of the iconic silent films can be classified as science fiction. Maybe they were just statistically insignificant but culturally influential. I don’t really know.