The footage was filmed at this year’s Dragon Con in Atlanta, GA. The big Marvel Comics photo and video shoot included James Gunn (Guardians of the Galaxy director) and comic creators George Pérez (JLA VS Avengers) and Kelly Sue Deconnick (Captain Marvel). Cosplays included an Iron Totoro, an amazing Iceman by Dustin Fletcher, Groot by HurleyFX as well as many Guardians of the Galaxy cosplayers and much more. Enjoy!
Thanks to Distractotron for the tip.