This is MP_DR_MIRRORS_EDGE, a map mod within Call of Duty 4: Modern Warfare that's a tribute to the 2008 cult favorite by Electronic Arts. And yes, you can parkour your way through it, too.
It works with BraXi's Death Run Mod for Call of Duty 4, a five-year old mod based on the game type of the same name in Counter-Strike. This map is the work of SuX Lolz , with assistance from several others. He constructed the map to resemble the prologue level of Mirror's Edge, with a day/night cycle, plus some secrets and rooms thrown in.
SuX Lolz spent about three months building it, and it's probably going to be his last for the original Modern Warfare. He's releasing it for free, but is accepting donations. His contact information, plus the full credits for those who helped on the map, are available in the "about" section on the YouTube page.