7 hr trailer released for world's longest film 
A 7 hours 20 minutes long trailer was released by Swedish filmmaker Anders Weberg for his film 'Ambiancé', which will be the world's longest film with a running time of 720 hours or 30 days. The film will premiere on December 31, 2020. Notably, the film will be showcased in its full length on a single occasion and then deleted.