According to the homeowner who captured the video, the burglary occurred Nov. 20.
The video, shot by a tiny camera hidden inside a clock, runs about 15 minutes.
It shows two brazen crooks taking their time to ransack the two-story condo.
Both even shoot glances at the camera they can't see.
One walks around with a stolen still camera around his neck as he surveys the home.
Dustin Nguyen, 38, of Baldwin Park hoped that doing so would help his brother and police capture the two men who took cameras, jewelry and other valuables, including Christmas gifts.
"They broke the door in back," Nguyen said. "Then they walked in and got a lot of stuff."
El Monte police are investigating the burglary. Nguyen estimates the thieves got away with about $10,000 worth of goods.
He believes they entered through the garage and were not seen by any of the neighbors.
Besides giving cops a clear look at the faces of the burglars, the video helped detectives pinpoint spots in the home to dust for fingerprints. One of the burglars wore gloves. The other didn't.
Nguyen thinks the burglars cased his brother's home and struck at the most opportune moment possible.
"They knew what they were doing," he said. "They took Gucci and Coach bags, jewelry, all the valuables. It's so amazing."