Editor's note: The above video contains APD body camera footage of a 2019 deadly shooting involving officers. Viewer discretion is advised. AUSTIN (KXAN) — So far, seven people have testified in the deadly conduct trial for Austin Police Officer Christopher Taylor. He faces the charge in the 2019 death of Mauris DeSilva. According to police, DeSilva was having a mental health episode and holding a knife to his throat in his condo complex in downtown Austin when the shooting happened. Follow live court updates on the social media platform "X" at below. In court for day 2 of APD officer Christopher Taylor's deadly conduct trial. His attorneys say he acted in defense of himself/others while responding to a mental health call for Mauris DeSilva, who was walking around with a knife to his throat. Will live post here. @KXAN_News pic.twitter.com/vbgwK6w8ga— Brianna Hollis (@BriHollisNEWS) September 26, 2024 Body camera footage of shooting played for court Officer Joseph Cast was first on the stand Thursday. His testimony took up most of the day. Cast also responded to the 911 call for DeSilva, and also came face to face with DeSilva at the condo complex. Cast deployed a stun gun while Taylor and another officer, Karl Krycia, fired guns. The video shows the elevator open and DeSilva standing at the wall across what witnesses describe as a narrow hallway, looking in the mirror holding a knife to his throat. About three seconds pass between when the elevator opens and officers issue commands and shoot DeSilva. You can view that footage in the video at the top of this article. When prosecutors questioned Cast about the footage, they worked to support their stance that DeSilva was not threatening officers, asking Cast questions about his observation in the moment displayed on the monitor in the photo below. Still from body camera footage presented in court. "Is [DeSilva] actively using deadly force against you or the other officers in the elevator as depicted in state’s exhibit number [inaudible]?" prosecutor Rob Drummond asked Cast. "Actively, no," Cast responded. "You said you would describe this as preparatory, is that right?" Drummond followed up. "Yes," Cast said. "So you said you were concerned the next thing he would do would be to use force, is that correct?" Drummond said. "Yes," Cast said. Wednesday testimony details what led up to shooting During testimony and opening statements Wednesday, more details about what led up to the shooting were revealed. Read a full breakdown of opening statements and day one of testimony in Taylor's trial here. Taylor and another officer, Karl Krycia, were the first on the scene. They spoke with condo staff, who showed them surveillance video of DeSilva on the fifth floor of the condo complex near the gym. Taylor's attorneys said DeSilva was seen on that video waving a knife at the camera. Body camera video shows Officer Christopher Taylor briefly speak to a man who called 911 after seeing Mauris DeSilva with a knife in the street. (KXAN Photo/Ed Zavala) Eventually, according to court testimony, other officers arrived, the corporal in charge was looped in, and they devised a plan to confront DeSilva on the fifth floor. Both sides had different explanations regarding what happened when the elevator door opened and DeSilva was there. "[DeSilva] faces toward them, he's lowered the knife to his waist. You’re going to see that Mauris DeSilva is not trying to kill these officers," prosecutor Rob Drummond said. "Mauris DeSilva was undergoing a profound mental health episode. This was not a justified use of force." Taylor's attorneys say DeSilva was close enough to officers with a deadly weapon to pose a threat. "He’s got the knife to his throat, over the next three seconds, he takes two steps toward the officers and levels the knife," defense attorney Ken Ervin said. "Three seconds is the time the officers had to make this decision. By the time officers fired, Mr. DeSilva was about 3 feet from one officer, and about 5 and a half feet from officer Taylor. " Taylor was originally indicted on both murder and deadly conduct charges in this case. The District Attorney's Office dropped the murder charge last week. The other officer charged in the shooting, Karl Krycia, still faces a murder charge, according to online court records. KXAN will update this story throughout the day.