It happened at a gold-buying store inside a Food Town grocery store on FM 529 near Highway 6 in northwest Harris County.
The video shows the man threatening a clerk and demanding cash. Police say the suspect doesn't produce a gun, but did get away with a large amount of cash.
"Bring it here right now! Hey, bring it over here right now," said the suspect. "Right here, right here! Give it to me right now! Right, here. That's not quick enough."
The suspect is described as a white or Hispanic male between 25 and 35 years old. He stands about 5' 11" and weighs between 190 and 210 pounds.
If you recognize him, you're being asked to call authorities.