Is your teen upstairs conducting a video chat? Maybe they're broadcasting live on the Internet? A new study from the Pew Internet & American Life Project finds that about a third of teen Internet users are using video chat services or uploading video to the Web.

Of the 799 teenagers aged 12 to 17 polled by Pew, 37 percent participate in video chats via services like Skype, Googletalk, or iChat. Girls are more likely to conduct these video chats - 42 percent vs. 33 percent.

About 27 percent of teens said they record and upload video to the Internet, with boys and girls just as likely to produce their own videos.

A smaller amount - about 13 percent - have set up live video streaming on the Web for other people to watch.

Not surprisingly, those who are active on social networks like Facebook are more likely to explore online video. Thirty-one percent of social network users have recorded or uploaded video compared to 10 percent of non-social network users.

Overall, about 95 percent of teens ages 12 to 17 now use the Internet, and 80 percent are active on social networks.

Back in 2010, Facebook video uploads hit 20 million per month, a number that has likely increased as the social network approaches 1 billion users. In July 2011, Facebook also introduced video calling with Skype and group chat.

Earlier this year, Google+ added support for Webcam video sharing. The social network also has its Hangouts feature for group video chats.