The airport featured in Osamah's video is EDDM from the X-Plane Gateway. That airport can be downloaded directly from there, or if you prefer, it will appear as a default airport in X-Plane 10.50. It is a good example of the quality we are starting to see on the Gateway for large International airports, which will be making their way into the core product.
Osamah has added a more recent video to his YouTube channel, which discusses the Gateway, and specifically covers the airport in question. I recommend checking it out.
Julian Lockwood
X-Plane Gateway Architect and Moderator
Laminar Research