From the video-description:
We are a group of engineers/designers from San Francisco. This was our second balloon launch on 6/5/2010. Shot with 2 HD Hero cameras from GoPro. Launched from the California coast near Davenport, landed in Crows Landing 70 miles away. Peak altitude 80,000 feet. Acquired GPS, pressure, accelerometer, and temperature data with a Shadowbox (www.shadowboxlive.com). The payload was tracked with a SPOT satellite personal tracker.