Sainsbury's Christmas Advert 2013 by Kevin MacDonald is a feel-good festive film Christmas in a Day features heart-warming home footage of celebrations Directed by Life In A Day director Kevin Macdonald His award-winning 2011 film featured 80,000 crowd-sourced clips 45minute festive film for Sainsbury's to be released on YouTube next week 3minute teaser clip revealed exclusively on the Mail Online today Scenes include swimmers braving the cold and old ladies dancing From animated brown bears at John Lewis to Rosie Huntington-Whiteley on a magic carpet ride for M&S the competition for festive ad of the year has never been fiercer. Now Sainsbury's are making a bid for seasonal stardom - and have hired an Oscar-winning director to ensure their film, Christmas In A Day, hits the spot. Inspired by Kevin Macdonald's award-winning Life In A Day movie, the 45 minute film features a series of ordinary people celebrating on Christmas day in footage filmed by themselves. The adorable 'Smith' brother and sister are two of the stars of the Sainsbury's Christmas 2013 film The film has been created by Life in a Day director Kevin Macdonald The full 45 minute film will be released on YouTube on November 29 Macdonald spent hundreds of hours splicing together the crowd-sourced clips to create a heart-warming feature film, a teaser for which is unveiled exclusively below for Mail Online readers. The full film, produced by Ridley Scott, will be released on the 29th November. Macdonald, who is also known for his films Touching The Void and The Last King of Scotland, created the documentary and the ad campaign from the more than 360 hours of festive footage he received from all over the UK. 'I was overwhelmed by the creativity and enthusiasm of the people up and down the country, from every walk of life, who filmed their Christmas and shared it with us,' says Macdonald. Enjoying the day: Contributor Mr Fletcher shows the world how he celebrates Christmas in the new film Communal Christmas: Elderly ladies make the most of a live band during a festive event at their care home Busy: For Mrs Masters, Christmas Day means donning an apron and producing a slap-up festive lunch Chilly dippers: For some hardy souls, it seems Christmas just isn't Christmas without a freezing al-fresco swim I feel that the finished film stands out for many reasons - it is funny, moving, often beautifully shot and above all truthful. I am immensely thankful to everyone who took part and to Sainsbury's for making the film possible.' Speaking about how the concept behind the film came about, Macdonald revealed that it originally began as an offshoot from his last crowd-sourced film, Life in a Day. 'It was completely unlike any film that I had made before, and it really was an experiment in creating the opportunity to hear and see ordinary people share their lives, their loves and their fears,' says the director. And while we were working on it we kept talking about what an "in a day" film might be like if we could just choose a particular day that was already significant to people, and thought it had to be Christmas, because it is the one time in the year when everyone steps back from ordinary life for a day and we get to stop and think about our lives in a way that we are all just too busy to during the rest of the year. Oscar winner: Macdonald (centre) took the best documentary prize for One Day in September in 1999 Triumph: His 2006 film Last King of Scotland, about Ugandan dictator Idi Amin, also took home an Oscar He added: 'People have been hugely generous sending us more than 360 hours of footage. My approach to Christmas In A Day was to look at everything and think about what the footage revealed about the different ways we celebrate or approach Christmas. There are so many experiences which are common to so many of us, rituals and preparations, being with family and friends, or being alone, it was all there in the contributions that people sent in. I feel that the film stands out for many reasons, it is funny, moving, often beautifully shot, but above all there is beauty in the ordinariness of it. Sainsbury's, who will also be running a traditional food-based campaign over the festive period, say they hope the film will reveal something 'really interesting about the way we celebrate Christmas.' 'When we saw the film, we realised it had far exceeded our expectations,' they explained. 'We believe this film is something very special indeed and I am proud that Sainsbury's has been involved in this project from the outset. 'By having the film as our lead Christmas activity, I hope we'll encourage millions of people across the UK to watch the story of Britain's Christmas in a Day, which brings to life how Britain really celebrates Christmas.' The John Lewis Christmas ad features an animated woodland tale featuring a bear and a hare with Lily Allen providing the soundtrack M&S are banking on Rosie Huntington-Whiteley in her pants boosting seasonal sales