The footage is about a procession in honor to Saint Martin of Tours on 2011-11-11.
The story behind:
"While Martin was still a soldier in the Roman army and deployed in Gaul (modern day France), he experienced the vision that became the most-repeated story about his life. One day as he was approaching the gates of the city of Amiens he met a scantily clad beggar. He impulsively cut his own military cloak in half and shared it with the beggar. That night, Martin dreamed of Jesus wearing the half-cloak he had given away. He heard Jesus say to the angels: "Here is Martin, the Roman soldier who is not baptized; he has clad me." (Sulpicius, ch 2). In another story, when Martin woke, his cloak was restored, and the miraculous cloak was preserved among the relic collection of the Merovingian kings of the Franks." (from Wikipedia)
Especially in Germany, Austria and the Switzerland the 11th of November is celebrated as the Martin's day. The celebrations normally get along with a role play of the scene described above, the church service, a procession which is led by a man on a gray horse in a red roman cloak, symbolizing St. Martin, and accompanied by children and their families using their hand lanterns to illuminate the night. The processing often ends with a big bonfire and typically St. Martin's Geese and "Stutenkerle" (yeast dough pastries with sugar) are served.