A number of good YouTube videos are available on public talks given by Eric Martinot in 2013 and 2015, in varying lengths.
Pathways to 100% Renewable Energy Conference, San Francisco, Keynote Speech, 2013 (33 min.)
University of Colorado Boulder Lecture, 2013 (1 hr. 15 min. including audience questions)
TEDx Tokyo Talk: Renewable Energy Is Our Future, 2013 (11 min.)
New Zealand Center for Sustainable Cities: Renewable Futures and Options for Cities, 2013 (1 hr. including audience questions)
Renewable Energy Urban Futures: A Global Update, 2015 ( 37 min.)