The longest movie trailer to ever be made was intended to promote the longest movie ever made, but mysteriously, this mammoth of a movie was never actually released. The Swedish director Anders Weberg set out to make the longest movie ever made, and in 2020, announced that it would be released on December 31, 2020. The film, which he named Ambiancé, was projected to be 720 hours long, or 30 days long. Although Weberg seemed to make significant progress over the course of several years, Ambiancé was never actually released, but its trailers were.

It is unclear when Anders Weberg first began working on Ambiancé, but in 2016, he announced that he had already completed 400 hours of footage, which made up more than half of the movie’s intended 720 hour runtime. At that same point, Weberg noted that, in order to complete the film by its release date in 2020, he would have to film between 7 and 8 hours of raw footage each week. Over the course of making the project, Weberg released two trailers for Ambiancé. The first was released in 2014 and was 72 minutes long. The second trailer was released in 2016, and became the longest trailer ever made.

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Ambiancé Has The Longest-Ever Movie Trailer (It’s Over 7 Hours)

The second trailer that Anders Weberg made for Ambiancé was released in 2016 and was 7 hours and 20 minutes long. This made it the longest movie trailer ever made. What makes it even more incredible is that all 439 minutes of the trailer was just one take, making it the longest single-take movie scene. Such a trailer had never been made before, and nothing else has topped it since. In some ways, the trailer was as incredible a feat as the movie itself. Its seven-hour runtime was the first sliver of proof that Weberg was truly dedicated to this experimental project, and could perhaps even make it happen.

After Weberg released his 7-hour trailer, he intended to make an even bigger one which would be released in 2018. This third and final trailer was going to last 72 hours. This would have been the final show of grandiosity before Ambiancé itself came to fruition in 2020. Furthermore, it would have rounded out the number of trailers Weberg released, as the first was 72 minutes, the second was 7 hours and 20 minutes, and the third would have been 72 hours. It’s unclear why this third trailer never came to be, but it probably has to do with the fact that Ambiancé failed to happen.

What Happened To Ambiancé & Why It’s Not Available To Watch

Although Anders Weberg long intended to release Ambiancé on December 31, 2020, the film never came out. The day came and went, and no movie was found, only the two oversized trailers that the filmmaker had made. Later, in January 2021, Weberg posted on Twitter and the film’s official website, “C’est fini,” or “It’s finished.” This implies that perhaps Weberg did finish the film but never posted it. It could also signal the end of Weberg’s career as a director or the end of his intentions to make the project. Either way, Ambiancé has never seen the light of day, making it the longest movie that never happened.