BEVERLY HILLS, Calif. — As films go this one is short, grainy and full of lulls that would send most audiences to the aisles. But the security tape of Winona Ryder's alleged shoplifting spree at a Beverly Hills Saks Fifth Avenue last December has a captive audience: a jury of the actress's peers.

Jurors watched Tuesday as Los Angeles County Deputy District Attorney Ann Rundle played the videotape and asked a Saks security guard, who operated the cameras from a basement control room, to narrate.

"The red bag is now significantly [larger] than when she went in with it," said Kenneth Evans about Ryder's emergence from a dressing room in the store's luxury boutique.

After briefly ducking into the Chanel boutique, Ryder is seen descending to the first floor, where she leaves, followed quickly by a pair of security guards.

Evans testified that he later found four Sensormatic security tags tucked into the pocket of a coat in the Chanel boutique.

Three of the tags still held small swatches of material that Evans matched to items found in Ryder's possession: a black, fringed Dolce & Gabbana handbag, a black Natori handbag, and a bow.

Ryder, who turned 31 Tuesday, is charged with three felony counts, including grand larceny, burglary and vandalism for allegedly stealing $5,560.40 worth of designer merchandise, including hats, handbags, tops and hair accessories.

In his opening statement Monday, her attorney, Mark Geragos, characterized the case as security guards gone awry. But Rundle called the allegations "a simple case of theft."

By the end of Ryder's shopping spree, which lasted an hour and a half, she appears in the video overburdened by her swollen bags, which include two shopping bags, a black valet of items she purchased from Saks that day, and a shoulder bag.

At one point, she stumbles, dropping her bags.

"I could see that the hat that she had selected from the first floor and wore into the fitting room was now in the red bag," Evans said.

On cross-examination, Geragos sought to portray Evans and his security team as overzealous, focusing on when the four security tags in question emerged. Geragos pressured the security guard, asking why he made no official record of having found the four tags sometime after the investigation began.

"When you found the sensor tags, you didn't think that was important?" he asked.

"It's important, but I didn't think it was necessary to prove that Wynona Ryder shoplifted on Dec. 12," Evans replied.

Geragos will continue his cross-examination of Evans tomorrow.