The jury at the Brisbane Supreme hearing murder allegations against Australian man Gable Tostee was shown these CCTV captures of the 30-year-old meeting Kiwi tourist Warriena Wright for the first time after connecting on dating app Tinder.

New Zealand tourist Warriena Wright made a decision "to climb to certain death" when she stepped over Gable Tostee's balcony railing, her accused murderer's lawyer says.

The defence alleged Wright had just hit, or at the very least attempted to hit, Tostee in the head with the clamp from a telescope and he was acting in self defence by forcing her outside.

The 30-year-old's defence barrister, Saul Holt QC, argued that "decision" was not rational and was completely inconsistent with any perceived danger.

TWITTER/@SARAHMOTHERWELL A selfie taken by Gable Tostee with Warriena Wright at his apartment on the night she died after falling from his 14th-floor Surfers Paradise balcony.

If that was the case, Tostee could not be found guilty of murder or manslaughter, he said.

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He took issue with many elements of the prosecution's interpretation of the "key six minutes" of audio Tostee had recorded, leading up to the moment the 26-year-old fell to her death in the early hours of August 8, 2014.

SUPPLIED Gable told the Australian Supreme Court his client would not be giving evidence and he would not be calling any witnesses to give evidence either.

As Wright stood on the other side of the railing of the 14th floor balcony she'd earlier laughed and taken selfies on, facing outward, Holt said she had no chance of making it to the balcony below.

"She made a decision, essentially, I have to put it this way, to climb to certain death and that was not a rational or proportionate or a reasonable decision," he said.

"There was not something that looked like a ladder. She just climbed off into the darkness and lowered herself down.

"It wasn't that she was in a dangerous situation. She had made a decision essentially that was going to kill her at that point."

Someone would have needed to have been chasing her with a knife for her actions to be reasonable, Holt argued.

The crown's case was that Tostee terrified his Tinder date so much inside the apartment that he was as responsible for her death as if he had pushed her, despite them being separated by a locked door.

But Holt argued the act of forcing an "increasingly erratic" Wright onto the balcony and locking the door was actually an attempt to "de-escalate" the situation and to label it intimidation was "nonsensical".

Crown prosecutor Glenn Cash had earlier taken the jury through Tostee's audio recording from the night, using it to allege Tostee used "excessive force" in restraining her and intended to cause her grievous bodily harm by restricting her breathing, possibly with a forearm.

He argued Wright, who'd been throwing ornamental rocks at the defendant before a violent struggle escalated, and he restrained her on the floor, was by this point defending herself, after originally being the aggressor.

Cash did not suggest Tostee, who pleaded not guilty and declined to give evidence, had intended for her to die when he placed her on the balcony but that an ordinary sober person should have foreseen it, saying that proved unlawful killing.

He argued the restriction of breathing was an intent to cause grievous bodily harm, even if briefly, saying that proved murder.

But Holt accused the Crown of downplaying the seriousness of Wright's "attack" on her accused killer.

He argued after restraining Wright on the ground and "angrily" ordering her out of his apartment, Tostee allowed her to get up to leave.

"You're lucky I haven't chucked you off my balcony you goddamn psycho little b....," Tostee said, during the struggle.

"I'm gonna walk you out of this apartment just the way you are, you're not going to collect any belongings.

"If you try to pull anything I'll knock you out, I'll knock you the f... out."

It was at this point, Holt said, that Wright did try something, to hit him with the clamp.

"He says, in circumstances where he would have no reason to make it up ... you hit me in the head," Holt said.

He pointed to pathologist Diane Little's failure to find any bruising around the deceased's neck, internally and externally, along with several comments made by both Tostee and Wright on tape to cast doubt on the Crown's initial claim of choking.

He said the crown had "back-pedalled away from that furiously during the course of this trial" and asked them to reject any suggestion of a choke hold.

In the Crown's closing arguments Cash said Tostee's actions could be consistent with "restriction of breathing" but not long enough or forceful enough to leave marks.

Defence and prosecution both finished their closing submissions on Friday, before Justice John Byrne began instructing the jurors.

He reminded them only to consider the evidence presented at trial and ignore outside sources.

The jury was allowed to leave, to return on Monday at 11am.

CASE DAY FIVE

The jury was told the audio recording he made on the night of his alleged victim's death was the only thing that mattered in their decision.

Depending whose interpretation jurors agreed with, it either proved his guilt or showed his innocence.

Beginning his closing remarks just before lunch, defence barrister Saul Holt QC said his client's words and behaviour captured in hours of digital tape were not "perfectly acceptable", but neither did it represent murder or manslaughter.

He labelled the Crown's arguments "weak" and "flawed" and urged the jury to see the defendant and the deceased as real people, not movie characters.

Whether it was "okay or moral or decent or just weird" for Tostee to make the recording in the first place was irrelevant, Holt said, telling the jury it was an "extraordinary resource".

Holt said Tostee was a gentleman toward an erratic and odd Wright and urged the jury to examine the evidence of the first date gone horribly wrong in context, remembering those involved could not have conceived in their worst nightmare how it would turn out.

Holt told the court his client would not be giving evidence and he would not be calling any witnesses to give evidence either.

Cash attempted to convince the jury that the deceased 26-year-old had been trying to climb from Tostee's 14th-floor balcony because she feared what he would do to her if she went back inside.

Cash said if not murder, he would seek a decision of manslaughter as an alternative.

Cash said the question of why Wright was attempting to climb down from the balcony would be key to a decision.

"The answer to that question is fear," he said.

"Fear of the defendant. Fear of Gable Tostee. Fear of what he would do to her if he let her back inside."

He said if the jury was satisfied the defendant had instilled fear and terror into Wright then he caused her death as much as if he'd pushed her.

Cash argued Tostee used excessive force in responding to Wright throwing ornamental rocks at him.

Tostee, 30, has pleaded not guilty to murder.

The court heard Wright had "probably" unlawfully assaulted Tostee earlier in the evening, before she plunged to her death from his balcony.

He "wrestled" with her, restrained her "for some time", and appeared to have brought the situation under control fairly quickly, Cash said.

"His dominance of her is positioning such that she is no danger," he said.

The prosecutor asked the jury to consider whether Tostee's response was a reasonable use of force.

The jury was again played excerpts of an audio recording taken on the defendant's phone on the night.

It heard Tostee tell her she was lucky he hadn't thrown her off the balcony, call her a "goddamn psycho little b...." and order her out of his apartment, and her scream of "no, no, no".

Further along in the recording, Cash suggested the sounds heard were "gurgling" as he alleged Tostee was restricting the deceased's breathing, possibly by a chokehold, for at least 45 seconds.

On Thursday, pathologist Dianne Little said there was no physical evidence Wright had been choked or strangled but agreed there was a small possibility such an act could occur without leaving a mark.

Cash said the defendant used "excessive force" in restraining the "petite" Wright and if she had armed herself with a clamp or telescope found in the room, that was "perfectly legitimate".

"She is by this point defending herself against the conduct of the defendant rather than the other way around," Cash said.

Cash played the section of audio captured as Wright was forced out onto the balcony, saying she was experiencing "terror, bordering on hysteria".

TIMELINE OF WARRIENA WRIGHT'S FINAL NIGHT

Based on CCTV and audio recording exerts tendered in murder trial.

Thursday, August 7, 2014

8.46pm - Gable Tostee and Warriena Wright meet for their Tinder date on Cavill Ave, Gold Coast.

8.50pm - Tostee buys a six-pack of beer from BWS.

8.53pm - They get into lift at his block of units. Last time Wright is seen alive.

Friday, August 8, 2014

Tostee starts recording audio on his mobile phone at 1.05am

2.14am - Tostee: "You have to leave." Wright: "It's all good." Tostee: "You're f...ing insane."

2.15am - Tostee: "You're lucky I haven't chucked you off my balcony, you goddamn little psycho b....".

2.17am - Tostee: "I'm gonna let you go, I'm gonna walk you out of this apartment just the way you are. You're not going to collect any belongings, you're just going to walk out. I'm gonna slam the door on you. If you try to pull anything I'll knock you out, I'll knock you the f... out."

Heavy breathing then crashing sound

2.20am - Tostee: "You just don't understand. Let go! You think if you hit me I'll just fall down like in the movies?"

Wright: (screaming) "No, no, no, no, no. Just let me go home."

Tostee: "I would but you have been a bad girl."

Wright: (screaming) "I want to go home, I want to go home."

Distant scream followed by loud heavy breathing

2.22am - Tostee: "S..." (call goes to voicemail) "Where the f... are my keys?"

2.23am - Gets out of lift on ground floor, paces around, goes back in.

2.25am - Gets out of lift in basement, leaves building via car park.

3.07am - Tostee continues walking around Gold Coast entertainment precinct.

3.11am - Orders and eats pizza from Cavill Ave shop.

Tostee calls father

Tostee: "Hello dad, might have a bit of a situation ... I locked her out on the balcony and I think she might have jumped. I've been walking around and there's million cops around my building ... I swear to god I didn't push her. I just chucked her out on the balcony because she was beating me up ... why does s... happen to me, I didn't do anything wrong."

3.44am - Tostee picked up by father Gray Tostee in car.

Tostee: "Oh my god, I hope she's not dead."