Taken from an interview with directors Dylan Southern and Will Lovelace and published by Billlboard that can be read here.
The documentary covers rehearsals and the tour.
It features the first Liam and Noel joint interview in more than 20 years.
The filmmakers wanted to explore the complicated relationship between Liam and Noel, as well as the emotional reaction of Oasis fans.
Southern describes the audience reaction after the first Cardiff concert as people looking “shell-shocked, like they’ve been through every possible emotion.”
Southern says this was when they realised the emotional impact was much bigger than expected.
He says the music gradually brings Liam and Noel together.
Fan reaction becomes “a huge catalyst” in the development of the brothers’ relationship.
The crew filmed at almost all 41 tour dates, across 14 countries and five continents.
The cinematographers were told: “You’re making your own movie” and were encouraged to capture anything interesting happening among the crowds.
Almost every song from the Oasis setlist appears in the film through rehearsals or concert footage.
Southern and Lovelace filmed for six weeks of rehearsals and five months of shows.
Southern says they had “the most material of any film we’ve ever made.”
Editing the huge amount of footage was the film’s biggest challenge.
Shooting for IMAX created additional technical difficulties because the filmmakers wanted the film to be “a big visual spectacular.”
The filmmakers saw the brothers’ sibling relationship as something audiences could relate to.
Southern says: “You might not be able to relate to what it’s like being in a band playing to thousands of people,” but “we can all relate to family and relationships.”
The documentary shows the different atmosphere at concerts around the world.
Southern and Lovelace prepared for “any eventuality” before filming.
The title Don’t Look Back in Anger was chosen late in the filmmaking process.
Southern says: “Our hope was to make a film about reconciliation and forgiveness.”
He adds that the film is ultimately about “those things and the breakthrough moments that happened throughout.”