Formats
Deleted or extended scenes can come in any of several different formats. They may or may not feature finished special effects (especially in science fiction and fantasy films, where visual effects are more expensive), and the film quality may or may not be the same as in the rest of the film, though in some cases this may depend only on how much post-production editing was done.
Additionally, animated films' deleted scenes might not be in the form of a fully animated scene, but rather included in the form of an animatic or a blooper form, as is the case with the deleted scenes on the DVD release of Pixar's Toy Story and Finding Nemo.
Plus, certain deleted "non-finished" scenes can be from TV shows like King of the Hill.
Read more about this topic: Deleted Scene