Why is the world's earliest movie "Landsea Garden Scene" only two seconds?

At that time, cardboard film was used, which was difficult to preserve. In addition, the French inventor Louis Le Prince, who filmed this film, mysteriously disappeared before the new invention was announced, and his sons Adolphe Le Prince and Edison were killed after a patent lawsuit, which made it more difficult to preserve these heritages.

In the1930s, the London Science Museum found 20 surviving pictures, flipped them on film and showed them at 12 frames per second (according to legend, the shooting speed of that year) 1.66 seconds. Later, it was restored to 52 frames by digital technology, and the playback speed of modern normal cinemas was 24.64 frames per second, with a duration of 2. 1 1 second.