The British fans were in Germany for the Cup of Traditions tournament, which took place at MSV Duisburg's Schauinsland Reisen Arena over the weekend.
In the video, posted on the Aston Villa Away Facebook page, brawlers are seen throwing chairs and tables - supposedly at supporters gathered inside the O'Reilly's pub.
It also appears to show one man being kicked in the head while on the ground It also appears to show one man being kicked in the head while on the ground as spectators watched in horror.
According to the post, around '10 Villa with women and kids' were inside the pub at the time of the attack.
NEWS: Kate Beckinsale Reveals 'Marriage Proposal' From Teen Crush Rob Lowe With NSFW Postcard Our source tells ET that Beckinsale met 21-year-old Rife through a mutual friend, and that they're "officially boyfriend and girlfriend.""They quickly started flirting, went on their first date and it's continued since," the source says.