I got his video talk from Senthil Gandhi, a senior data scientist at Firat Retail Labs. It is a video of MLBase project on top of Spark
The talk is by Ameet Talwalker and Evan Sparks from the Berekely AMP Lab. Video was released a couple of weeks ago, of a talk given at Twitter on Aug 6, 2013. Very recommended!
On a related note, I just got from my collaborator Joey Gonzalez, our man at the AMP lab, a link to the recent AMP camp. The talks videos will be released soon.