One of the victims of the Orlando attack captured the gunman's first shots.

Amanda Alvear is dancing, laughing, having a drink with friends.

It is Saturday night and she is at a Latino night at Pulse Nightclub with her friend Mercedez Flores in Orlando, Florida.

Amanda Alvear, 25, a nursing student documented everything on her phone. Her brother said she was always taking hundreds of selfies and Saturday night was no different.

Amanda Alvear died at the Pulse Nightclub. Via Facebook.

Her first Snapchat shows her dancing and raising a glass with friends. In the next the group of friends are dancing again. Jumping. Laughing.

Hundreds of young men and women pack the nightclub.

At 2am her final Snapchat is uploaded.

The 25-year-old looks different this time. Confused, Worried.

"Shooting," is all she says.

Warning: This video contains disturbing content. 

Ten gunshots can be heard followed by a pause, then another eight gunshots in quick succession.

Who knows just how many died in those five seconds? Eight people? Nine? Ten?

Fathers, sisters, brothers, partners. Innocent people out having a good time never expecting they would become the targets of a radicalised gunman.

It Amanda Alvear's last Snapchat because shortly after the much loved young woman was shot and killed as well.

In the hours after the shooting, Amanda’s desperate family and friends launched a search for her on social media. Amanda’s brother Brian Alvear confirmed the video was taken by his sister.

"Yes this is Amanda, she was creating a snapchat story though the night this is the last time anyone saw her, after this she did receive and answer one call," he wrote.

It is believed that while she hid in the bathroom she texted a friend in another part of the club.

Amanda and her brother, Brian Alvear. Via Facebook.

The Orlando Sentinel reports that Amanda, who had lost more than 80 kilos over the past year transforming herself, had spent the day before the massacre with her nieces taking them shopping.

"She was a fashionista. She liked to look good and she wanted my girls – her girls - to look good," her brother Brian said. "She liked to make them look very good."

He said she wouldn’t want hate spread in her name "She'd rather they spread more love, keep friends and family close, and have a good time doing it."

One of Amanda’s best friends, Mercedez Marisol Flores, was also at the club and was confirmed as another fatality.

Police in Florida say shooter Omar Mateen fired at least 110 rounds into the crowd.

He is understood to have fired 20 rounds, then 40, then 50 more, with his AR-15 assault rifle.

Amanda and her friend, Mercedez Marisol Flores who was also killed. Via Facebook.

Brian Alvear told The Ledger that while his family was suffering they were thinking of all the others suffering too.

“It's a tragedy, and we feel for all the families who've lost somebody.

“I know it's a difficult time, but I don't think we need to respond with hate. We need to come together as a community, both as LGBT and Americans, to try to send more love,” Alvear said. “That's what these people are trying to do is kill love, and we can't let them.

“We won't,” he said.