ddickinson: What is he saying in the video? 
  Well the start is the German text of Ode to joy mostly taken from a poem by Friedrich Schiller:  
 Freude, schöner Götterfunken 
 Tochter aus Elysium, 
 Wir betreten feuertrunken, 
 Himmlische, dein Heiligtum! 
 Deine Zauber binden wieder 
 Was die Mode streng geteilt; 
 Alle Menschen werden Brüder, 
 Wo dein sanfter Flügel weilt.  
 which translates to (according to Wikipedia, translation is apparently from Night of the Proms):  
 Joy, beautiful spark of divinity, 
 Daughter from Elysium, 
 We enter, burning with fervour, 
 heavenly being, your sanctuary! 
 Your magic brings together 
 what fashion has sternly divided. 
 All men shall become brothers, 
 wherever your gentle wings hover.  
 the rest of the video is nonsense. He just strings together German words ;)   
AgentBirdnest: n__n 
 Excruciatingly brilliant indeed :-) 
  :D  
 Edit: 
That page explains the nonsensical part with links to explain the references :)