First thing first, the trailers made by the awesome Michael D. Sellers, great admirer of Edgar Rice Burroughs and independent Hollywood filmmaker. Conscious of the abysmal weakness of the marketing campaign, he took upon himself to recut the official material, in these videos:

The trailer that made Andrew Stanton write: "they get it"!

https://www.youtube.com/watch?v=-BxeHQY1NuM

John Carter of Mars trailer :

https://www.youtube.com/watch?v=tSDHNMRQ2a8

The "Heritage" trailer that highlights the fact that John Carter inspired quite a lot of people and movies:

https://www.youtube.com/watch?v=OzPVYy7LHIo

John Carter of Mars: the journey

https://www.youtube.com/watch?v=H7kTO6En_kU

 

 

My favorite fan trailer, by William Farrelly. Who wouldn't want to see this movie?

https://www.youtube.com/watch?v=VJGwoV2r7pc

John Carter: Inception style trailer:

https://www.youtube.com/watch?v=ED4k_yn85-o

 John Carter : the first 100 years by kantoskan2012 :

https://www.youtube.com/watch?v=LCbTcRJZUmc

A trailer from "bigdawg1976", focusing on the love story:

https://www.youtube.com/watch?v=BexObY2Fw3k

And another, still by "bigdawg1976" using a song: Unity by Shinedown:

https://www.youtube.com/watch?v=rtbe0W0CN2c

"Dejah Thoris and John Carter: Without You" (version Glee) by "Indre plumb" :

https://www.youtube.com/watch?v=fdeuexPyKdc

John Carter of Mars - tribute "Without You" of Benjamin Brelain, by PrinzHaldir

https://www.youtube.com/watch?v=VPkQp7Ov1o8

John/Dejah; my Blood by MasQueRade

https://www.youtube.com/watch?v=sOYVTNWyN7s

John Carter tribute: the Red Boots - Strange Ways by Stoner Brazil

https://www.youtube.com/watch?v=6YQPyQdStDc

John Carter: Music Tribute HD (Epic Score: Leader of Armie) by jakubas1000

https://www.youtube.com/watch?v=B5jj4_EwWt4

John Carter Linkin Park - Angels in the Sky, by... a Russian contributor!

https://www.youtube.com/watch?v=B-d3WTpF6Xs

John Carter: time of dying (rock music!) by Antonis Z. :

https://www.youtube.com/watch?v=oKP9acs19hs

 

Official videos:

The "sizzle reel" cut in house by one of the editors of John Carter, Erik Jessen:

https://www.youtube.com/watch?v=Rm2KmKrpJQQ

Behind the scenes in three parts (without comments):

https://www.youtube.com/watch?v=d4WigdTRUPc

https://www.youtube.com/watch?v=Uf14ICWEoEo

https://www.youtube.com/watch?v=gW8VlqIdg18

The process behind the animation in John Carter:

https://www.youtube.com/watch?v=ORAAwyeuK_A

Interviews of Lynn Collins:

https://www.youtube.com/watch?v=LvfJSrHgOQM

https://www.youtube.com/watch?v=cHQVt2KYdwI (first question: how could you leave Wolverine for Gambit?)

https://www.youtube.com/watch?v=rdx2Fai8lWw

Featurette: John and Dejah:

https://www.youtube.com/watch?v=ye-AgS9Lg6M

Deleted scene: alternate opening scene:

https://www.youtube.com/watch?v=kyzXyo5EMhQ

For the record only, the catastrophic John Carter Super-Bowl ad:

https://www.youtube.com/watch?v=Tdg0uipoCUI

 

Other videos:

Kerry Conran's demo reel (Sky Captain and the World of Tomorrow) at the time he was to direct A Princess of Mars for Paramount:

https://www.youtube.com/watch?v=nKggYFJ-L_g

And now in HD: https://www.youtube.com/watch?v=Bfry_GeXst8

Animation tests of Bob Clampett when he tried in 1936 to make the first animated feature-length movie based on John Carter, which would have been the first, before Disney's Snow White! The lack of interest from theaters owners, all-powerful at the time, killed the project:

https://www.youtube.com/watch?v=bTAlgZlqwnQ