This chart illustrates that online video consumption greatly varies across different age groups. Younger adults are much more likely to consume online video content then older ones.
The online video viewing habits of millennials in the United States are significantly different from those of older viewers. According to a November 2013 survey conducted by YuMe and IPG Media Lab, Americans aged 18 to 34 are more likely to watch online video in all but one category. The only content category for which millennials trail older users is online news.
You will find more statistics at Statista