Never-before-seen footage of an uncontacted Amazon tribe has surfaced

Video footage of a rarely-seen South American tribe has been circulating online, puzzling viewers.

When it comes to secluded, indigenous tribes minding their business, it's generally not recommended that anyone tries to make contact with them.

This can be for a number of reasons, whether it be at risk of compromising their immune systems, coming across as a threat, or in the worst cases, risking death.

This is exactly what happened to John Allen Chau, an American man who decided to make contact with those living on North Sentinel Island, with those living here remaining isolated from the rest of the world.

Known for their aggressive defence tactics to those who attempt to step foot on their land, there is no understanding when it comes to these situations - though it won't stop people from trying them.

Rosolie is specifically known for his conservation work in the Amazon rainforest in southeastern Peru (YouTube/Lex Clips)

Now, computer scientist and podcaster Lex Fridman has analysed HD footage of an uncontacted Amazonian tribe.

The man behind the camera though, was author Paul Rosolie, who spent two decades working in the largest rainforest in the world - you may recognise him from the time he allowed a snake to 'eat him alive'.

Looking back at the footage, he admitted that it was a unique experience, explaining beforehand: “In order for any of this to make sense, I had to show you this footage… This has not been shown ever before. This is a world first."

A clip of the moment was shared to YouTube, with the video being one of the first instances of footage of uncontacted tribes being clear and up-close, instead of being grainy and in the distance.

The author noted that these snaps are usually 'blurry' and '100 metres away', but his footage was shot with a '800mm with a 2x teleconverter'.

In the video, the tribe can be seen walking onto the beach through a cloud of butterflies while Rosolie records their cautious movements.

They can be seen looking back in their direction, seeing if there is any potential threat as their body language appeared concerned.

Rosolie saw them group in formation with weapons, as he recalled: “Look at the way they move. Look at the way they point. Look at him with his bow,” he pointed out, as he felt like things may have gotten violent.

He asked about 'which way' the arrow was coming from, as he looked in every direction.

But as time went on, the group behind the camera moved closer, and the tribe lowered their weapons as they realised they weren't a threat.

“As they come closer, they start laying down their (weapons), see, he’s laying down his bow and arrow. They understand. No, no more.”

The tribe were threatened at first, before realising Rosolie was not looking to harm them (YouTube/Lex Clips)

Some of the members can be seen looking really curious, while others look amused at the sight of Rosolie and his team.

He noted that they are 'warriors', and they soon went from being tense to standing while being relaced and smiling.

Experts say that there are almost 200 uncontacted groups which exist around the world, with a large chunk based in the Amazon rainforest spanning across Brazil and Peru.

The majority of people avoid them as contact can be deadly, with information instead collated through methods like satellite imagery or aerial monitoring, as well as claims from other indigenous groups.