SAN ANTONIO -- Dash-camera video of a physical confrontation between a local deputy constable and another man led to a county-wide policy change on how the technology is used.
The Bexar County Constable Precinct 3 Office released video of the January 2013 incident, following an open records request from the I-Team.
The forward facing camera inside Corporal Jaime Perales' patrol vehicle captured video and audio of a confrontation between the officer and Ventura Trevino, a former police officer whose wife had just been pulled over for speeding near Madison High School.
Trevino said he drove to the scene to bring his wife her wallet and was trying to ask Cpl. Perales to drop a second citation issued to his wife for not having her license at the time of the stop.
"I told her 'I'm just going to ask him a question,'" said Trevino, when describing what immediately led up to his arrest.
Cpl. Perales briefly shut off the audio for his vehicle's dash-camera as he finished paperwork for the traffic stop.
He turned the audio back on prior to leaving his vehicle to speak with Trevino.
Perales can be heard telling Trevino to get back in his vehicle at least five times before arresting him.
Officials with precinct 3 said Perales acted appropriately, by arresting someone who refused to listen to multiple commands from an officer.
Trevino was charged with interfering with the duties of a public servant, a class B misdemeanor.
However, the Bexar County District Attorney's Office dismissed the charge in September, citing "insufficient evidence".
An assistant district attorney said the state's case was weakened by the break in audio in the footage, even though the audio channel was turned back on prior to the physical confrontation.
"Under the rules of evidence I can certainly see why it was thrown out," said attorney Tim Maloney, who is not associated with this case.
Maloney added that audio or video comes into play in nearly every case his law firm handles.
The new policy requires county law enforcement officers to keep audio turned on at all times while recording video with on-board cameras.
Maloney said this move will protect the integrity of this type of evidence in future cases.
"It has to be an accurate representation of what occurred."
Trevino said he is glad the charge against him was dropped, but still feels he did nothing wrong.
"When did it become illegal to ask a question?" said Trevino, who claims he raised his voice so Perales could hear him inside his patrol vehicle.
Trevino said he is still contemplating filing a civil lawsuit against the department.
WATCH THE FULL DASHCAM VIDEO BELOW. Mobile users click here.