See Chandler Carruth and Lars Knoll giving the keynotes at Meeting C++ this year:

Both Keynotes from Meeting C++ 2015 are online!

by Jens Weller

From the article:

Great news: Since yesterday, both of the keynotes from this years Meeting C++ conference are on youtube! Both keynote speakers chose to speak on a specific topic, and delivered very well. There is also a playlist for Meeting C++ 2015.