Parks Associates announced new streaming media and connected TV research today showing the number of U.S. broadband households with a streaming video media device, such as a Roku® or an Apple TV, has doubled since 2011, reaching 14% in 2013.

In the report Connected TV: Trends and Innovation, the firm notes Roku is the most-used streaming video media device in the U.S. market. In a 1Q 2013 independent survey of 10,000 U.S. broadband households, Parks Associates found, among households with a streaming video media device, 37% primarily use a Roku compared to 24% that primarily use an Apple TV.

Parks Associates analysts predict the number of connected TV devices sold worldwide will reach 330 million annually by 2017, almost double the number to be sold in 2013. Average product prices will decline over this time, but annual sales revenues will increase almost 100% by 2017 as more households buy smart TVs, gaming consoles, Blu-ray players, and streaming video media devices.