Golden State Warriors 2013 NBA Draft selection Nemanja Nedovic participated in the addidas Eurocamp in Treviso, Italy from June 8-10, which is what the video above is from.
Nedovic was one of "more than 45 early entries and NBA Draft-eligible participants" to participate in the camp, which also included Lucas Nogueira (Brazil) and Nemanja Nedovic (Serbia).
Warriors pick Nemanja Nedovic was the class' best in 2 quickness categories — 3/4-court sprint & reaction shuttle — at EuroCamp this month.
— Rusty Simmons (@Rusty_SFChron) June 28, 2013
A bit more background on the track record of this camp from a release:
Former adidas EUROCAMP participants include 62 NBA Draft picks and including Danilo Gallinari, Nicolas Batum, Andrea Bargnani and Omer Asik. 23 former participants currently hold NBA contracts with 57 playing in Euroleague Basketball. In 2012, seven adidas EUROCAMP players were selected during the NBA Draft including first-round pick Evan Fournier of France – the No. 20 overall selection by the Denver Nuggets.
The camp was staffed by 10 NBA assistants - none of which work with the Warriors - as well as former Warriors favorite Sarunas Marciulonis.
For more on Nedovic and the Warriors' many moves in the draft, visit our 2013 NBA Draft storystream.