BRIAN VINER: The Oasis movie could definitely - not maybe - be shorter. But I love it!

Oasis: Don't Look Back In AngerRating: Four out of five stars The least surprising thing about this documentary chronicling last year's Oasis reunion tour is the amount of effing and blinding it contains.The most surprising, despite the clue in the title, is how generous Noel and Liam Gallagher are about one another following the 15-year estrangement during which they traded Olympian insults. It duly seemed as if their feud would never end.Yet it did. By this documentary's conclusion, when the brothers give their first joint-interview for longer than anyone can remember, forgiveness is swirling around like dry ice at a stadium gig.'I forgot how funny he was,' says Noel of Liam. 'He deserves it and the songs deserve it,' asserts Liam of Noel, referring to all the adulation. Sweetly, we learn that their children, who had never even met, are now the best of friends.The documentary, which had its world premiere last night at the Venice Film Festival, ends not with an Oasis song but with a version of the Hal David / Burt Bacharach number, What The World Needs Now Is Love. So as the credits rolled and the applause rang out on the Venice Lido, we were left with a startling image of the Gallaghers as exemplars of fraternal affection. What next? The Clooneys on vacation with the Trumps?Arguably, what the world doesn't need now is another rock documentary more than two hours long. Could 20 minutes have been shaved off this one? Definitely. There's no maybe about it. Liam and Noel Gallagher arrive at the Lido Beach for the Venice International Film Festival on September 5It is a precision-tooled exercise in iconography, presenting the Oasis reconciliation as a global event of seismic import.So when a fan compares Liam and Noel burying the hatchet to the rising of Christ, and when a Manchester vicar makes the brothers' armistice the subject of a sermon, there is no sense of anyone, least of all co-directors Will Lovelace and Dylan Southern, laughing up their sleeve. It takes a cynic like me to muse that it would almost have been worth confecting the feud, so thumpingly good has it been for business.Never mind. Despite the film's adoring tone and challenging length, I had almost as fine a time watching it as I would have done at one of those reunion shows, had I been able to afford a ticket. When Liam starts to orchestrate the whole crowd, from the folk at the front to those in 'the cheap seats,' he quickly corrects himself. There are no cheap seats. 'Sorry about that,' he mutters.Oddly, Steven Knight of Peaky Blinders fame is credited as the film's writer, though there's no narrator or talking heads. I suppose his job was to pick out the richest interview snippets and the most revealing contributions from fans.As in all the best documentaries, the camera plays a more significant role than the microphone. There is something moving about the middle-aged multitudes in bucket hats singing and swaying as they revisit their own lost youth. I confess I dabbed my eyes.There is also a memorable shot of a lad, too young to have seen Oasis in their 1990s pomp, standing amid all the detritus after the end of the Cardiff concert, gripped by a kind of tearful stupefaction at what he'd just seen. Maybe it's not hyperbole to see the band's second coming as a quasi-religious event. When Liam stands backlit on stage, with his tambourine balanced on his head, it must be tempting for true Oasis believers to see it as a form of halo.Noel, incidentally, embracing that new-found spirit of brotherly love, observes that only Liam could get away with wearing a tambourine as a crown. If he tried it, he says, and how appropriate it is to end this review with asterisks, he'd look a right stupid ****!Oasis: Don't Look Back In Anger, opens in cinemas next Wednesday. It will stream later in the year on Disney+.