Reframing

For most of Disney-Pixar's home releases of its earliest films, aside from the original widescreen release, there is a unique fullscreen release known as reframing. Unlike most fullscreen presentations, which often infamously use "pan-and-scan", where huge portions of entire scenes are actually cropped off so that it would fit on a smaller screen, Pixar actually does the exact opposite, where instead entire scenes had to be completely reanimated or slightly edited to preserve the original widescreen version's quality. This would include expanding the screen vertically and slightly tweaking certain characters, background props, and/or entire scenes so that everything still appears all at once at any given time. The first Pixar film to use this method was 1998's A Bug's Life, and this continued until 2006's Cars (for some reason, Toy Story 2 was still only shown in widescreen) when the introduction of widescreen TVs had actually expanded the scene and therefore making this process obsolete. From Ratatouille onwards, all future Pixar films are and will still be shown only in widescreen. Here are all of the examples of reframing in the following films:

Reframing examples in A Bug's Life
Here are all the examples of reframing in A Bugs's Life:

Reframing examples in Monsters Inc.
Here are all the example of reframing in Monsters Inc:

Reframing examples in Finding Nemo

Reframing examples in The Incredibles

Reframing examples in Cars