A drab wall in Norwich city centre has been transformed in four days – and this three-minute video shows just how it was done.

The film, which was posted on Facebook on Sunday, had already been watched 15,000 times by Monday afternoon.

Made by 19-year-old student filmmaker Joseph Harrington, it shows how Norwich-based artist Anmar Mirza painted a giant mural on the side of Bar Tapas on Exchange Street.

The painting is part of a wider project called 'Get Walls' which is currently brightening up the streets of Norwich. The same scheme was responsible for the renovation of the neglected wall on Barrack Street 2014. Mirza, an ex-graphic design student, said he was excited about the prospect of having a 'giant canvas' that he could 'attack'. He dedicated the mural, which depicts women in different forms, to his mother whom inspired the painting.

'It was her birthday coming up and we used to watch cartoons and she used to tell me stories, so I painted it as a gift to her.

%image(14828375, type="article-full", alt="The new mural, as part of Norwich "Get Walls" project, on the side of Bar Tapas in Exchange Street, Norwich.PHOTO BY SIMON FINLAY")

'Every time she sees' it it'll be a flashback to her childhood,' the 23-year-old said.

Harrington, who studies film and moving image production at the Norwich University of Arts (NUA) documented the entire journey of Mirza's painting.

Rob Wilkes, Founder of Norwich based design company Creative Giant, proposed the idea for the film, and for Harrington it was an opportunity not to be missed as he said 'the collaboration of art brings people together'.

Mirza worked on the enormous piece of art on Exchange Street for four days, six hours a day, between April 5 to 13.

Starting from just a rough sketch, shown in the opening 15 seconds of the video, Mirza worked free hand over the four days of painting.

'It was quite annoying because when we first started it was a sketch and I had a clear idea, but the scaffolding got in the way so it was just improvisation after that,' he said.

Harrington also adopted this philosophy while filming. 'No one knew exactly how it was going to turn out, it was the same with the video; I just did it,' Harrington said.

The project 'Get Walls' is gaining recognition for local artists, although Mirza already has a global audience with works of art featured in Barcelona, Amsterdam and Switzerland.

Harrington said the giant artworks are 'doing a great job of getting artists the recognition they deserve'.