SAINT JOHN, N.B. -- The jury at the Oland murder trial in Saint John, N.B., spent the day watching grainy security video that an expert repeatedly said was of insufficient quality to support any definitive statements about details of the images.

A forensic video analyst was asked by the Crown to look at video that shows Dennis Oland entering his office building on the morning of July 6, 2011, and compare it to pictures of a shirt and brown sports jacket seized from Oland.

Grant Fredericks of Spokane, Wash., said that while the shirt and jacket are similar, he can't say they are the same because of the low quality of the video.

"The known jacket cannot be eliminated as being the question jacket," he told the court.

"Since no unique characteristics are visible in the video that could uniquely identify the question jacket, it is not possible to state it is the same jacket."

Fredericks made the same observations for the shirt, and of a pair of blue shorts that Oland is seen wearing later that evening during a stop at an Irving convenience store to buy milk.

Dennis Oland has pleaded not guilty to second-degree murder in connection with the death of his father, Richard Oland, whose body was found face down in a pool of blood in his Saint John office on July 7, 2011.

The Crown stated earlier in the trial that there were four areas of blood on Oland's seized jacket that matched his father's DNA profile.

Under cross-examination by defence lawyer Gary Miller, Fredericks said he was not asked by police to do any video analysis to compare the shoes or pants worn by Oland on the day his father was killed, a reuseable grocery bag being carried by Oland, or the movements of his silver Volkswagen Golf.

When asked if he could look at the video and pictures on the monitors in the courtroom and form an opinion, Fredericks said he had never examined video that way.

"I'd be guessing," he said.

Last week, the court was told that Dennis Oland became a suspect during an interview with police on the day his father's body was found.

During his interview with police, Oland said he had been wearing a navy jacket on the day his father was killed, while witnesses and security video indicate he was wearing a brown jacket.

Court has heard that Richard Oland was struck more than 40 times in the head and neck with a hammer-type instrument and a bladed weapon.

Fredericks was only available Monday so the testimony of lead investigator Stephen Davidson had been temporarily on hold.

When Davidson took the stand again late in the day, the defence began showing security video that showed what appears to be a silver Volkwagen drive up King Street and down Canterbury Street, where Richard Oland's office was located, at around 5:16 p.m.

During his statement to police, Oland said he first arrived and parked in the same lot as his father, but left after he discovered he forgot some genealogy documents at his office. He said he didn't have a pass to get into his office building after hours, so he returned to Canterbury Street and parked near the parking lot by Thandi's restaurant.

The court was shown a video that shows a car parking in that location.

Davidson confirmed for the defence that it was the location that Oland had described in his statement.

Other videos show someone who appears to be Oland walking down the sidewalk and crossing Canterbury Street at 6:12 p.m., the hatchback on the silver car being opened and closed, and then the car drives away.

The cross-examination of Davidson is expected to wrap up Tuesday.