NFL free agent Mark Walton argued with Pizza Hut employees, yelled at cops, got violent with his cousin, and then peed on himself before being arrested last January ... and the entire, wild scene was all caught on police video obtained by TMZ Sports.
It all went down back on Jan. 31 ... when around 11:24 PM, the 24-year-old running back got into a tiff with workers at a Miami Pizza Hut shop.
In the police footage, you can see officers rolled up to Walton while he was in a heated dispute at the pizza joint's ordering counter.