What was the first feature length computer-animated film?

'Toy Story' is a 1995 American computer-animated buddy comedy adventure film produced by Pixar Animation Studios for Walt Disney Pictures. The directorial debut of John Lasseter, 'Toy Story' was the first feature length computer-animated film and the first feature film produced by Pixar. Taking place in a world where anthropomorphic toys pretend to be lifeless whenever humans are present.

The film's plot focuses on the relationship between Woody, an old-fashioned pullstring cowboy doll (voiced by Tom Hanks), and Buzz Lightyear, an astronaut action figure (voiced by Tim Allen).

The screenplay was written by Joss Whedon, Andrew Stanton, Joel Cohen and Alec Sokolow, based on a story by Lasseter, Pete Docter, Stanton and Joe Ranft. The film features music by Randy Newman, and was executive-produced by Steve Jobs and Edwin Catmull.

The film required 800,000 machine hours and 114,240 frames of animation in total. There are over 77 minutes of animation spread across 1,561 shots. A camera team, aided by David DiFrancesco, recorded the frames onto film stock. 'Toy Story' was rendered at a mere 1,536 by 922 pixels, with each of them corresponding to roughly a quarter-inch of screen area on a typical cinema screen. During post-production, the film was sent to Skywalker Sound, where the sound effects were mixed with the music score.