That wouldn't be an either-or, one-application project. Several would be involved.
A 3D application will be a BIG time saver. Trying to pull of some of those shots in AE alone would take more time than it's worth. In fact, it would be darned near impossible to pull of some of those shots in AE. So make sure you have a 3D app.
Illustrator will also be invaluable. As will Premiere Pro to do the final tweaking on sound effects.
The credit list below for all those involved in the animation side of things:
Illustration: Martin Allais
Storyboards: Martin Allais
Animatic: Pere Hernández, Javi Vaquero, Matt Deans
Animator: Pere Hernández, Javi Vaquero, Pablo Navarro, Dani Alcaraz
Tracing and color:Ezequiel Cruz, Macarena Ortega, Eva Puyuelo, Joel Morales
Compositing: Santi Justribó Martin Allais
It would appear that Pere and Javi mix multiple techniques from traditional 2D drawn animation to 3D and even stop motion. I'd take a guess and say; Hand-drawn, Flash, 3D (C4D) and After Effects.
Dave , thanks a million for helping . Could you suggest a 3D app ?
Also , are you saying that all the work was done using only one 3d app ?
I'm just hoping you can give me a general outline of what software was used to create and animate such videos ?
Thanks for this detailed , useful answer
if you are on a budget blender.org.
Blender is a fully featured open source 3-D app plenty capable of doing anything in that spot.
You may want to read up on the making of The Dam Keeper, I have a feeling similar techniques and workflows were employed; tracing and painting over 3D...
Thanks Rick . Exactly what I wanted
StormyCPb , thanks alot my friend . I appreciate you taking the time to help out