On July 24, 2010, thousands of people around the world uploaded videos of their lives to YouTube to take part in "Life in a Day", a historic cinematic experiment to create a documentary film about a single day on earth.

Since then, Oscar-winning director Kevin Macdonald and a team of editors have whittled down over 80,000 clips and about 4,500 hours worth of material into an extraordinary 90-minute film set to open in theaters this weekend.

Macdonald joins American Morning today to describe how he created the documentary and to discuss what inspired him to make the film.