One in four US adult internet users has uploaded a video online, according to the Online Video 2013 report by the Pew Internet & American Life Project. One in five has posted a video that they created themselves.

The top-watched categories are Comedy, Educational and How-to videos, followed by Music.

Forty one per cent of mobile users shoot video on their phone, 40 per cent watch videos on their phone, and 21 per cent use their phone to post videos online.

Over the past four years, the percent of American adult internet users who upload or post videos online has doubled from 14% in 2009 to 31% today. That includes 18% of adult internet users who post videos they have created or recorded themselves—many of whom hope their creations go viral. The share of online adults who watch or download videos has also grown from 69% of internet users in 2009 to 78% today, and mobile phones have become a key part of the video viewing and creating experience.

Find out more about the survey and download the full report on the Pew site.