Portal 2 All Pre-release Footage

Going to assume that this will need a part 2 because no matter how thorough you are, there's always something else you're missing.
Why I compiled this: The current uploads of a lot of the GDC videos are in poor quality and/or have not corrected the offset audio. I took the liberty of doing so for all of them, as well as, of course, zooming them in so that the footage covers the entire screen. Other than that, a number of clips are somewhat more difficult to find these days, so I elected to add those in as well.
Why the video doesn't include anything later than the Co-op trailer: As far as I can tell, everything past the Co-op trailer is functionally retail, with little to no differences whatsoever.
Enable Captions to see additional facts/information for each video

Table of Contents:
0:00 - Intro
0:23 - F-Stop Intro
1:21 - Early Test Intro
3:07 - Old neurotoxin puzzle
4:13 - Paranoid Sphere
5:17 - Original Ending
6:30 - Portal 2 Teaser
7:32 - Old Wheatley Teaser
10:50 - Excursion Funnel
12:40 - Aerial Faith Plate
13:17 - Thermal Discouragement Beam
15:36 - Pneumatic Diversity Vent (CUT)
17:26 - Repulsion Gel
18:45 - Propulsion Gel
20:28 - Wheatley Update
24:14 - Repulsion Gel #2
26:18 - Aerial Faith Plate #2
27:56 - Co-op Trailer

All copyright belongs to Valve Software

[wolfclck]

More footage I've received since this video:

[Blaz_Haz_KATZ]

IDK why but in these old portal 2 promotion videos
Whenever they fire the orange portal
I can hear the scout saying "boing"

[gamerboygb]

The light bridges seen in the co-op trailer seem to be the ones seen in Portal: Still Alive for the Xbox 360.

[Frnk]

The original ending feels like a shitpost

[wolfclck]

Youtube be like: Here's 4 comments that you can only see in your alerts for some reason

[theodd]

There are multiple cores in the presentation videos they don’t seem like Wheatley because the eye is light cyan could it be some core hub era core that wasn’t yet modified.

[aj_real]

One thing I can point out in the first Aerial Faith Plate video is that when you can see the pipes, they use Portal 1 models, which could be a remnant from the Core Hub Era of development. Also, during a majority of Portal 2’s development, the Helvetica Condensed font wasn’t used and that Trebuchet MS was used instead. This means that Portal 2 might’ve once ran on Portal 1’s branch of the Source Engine at one point in development. Also, in the first Aerial Faith Plate video, you forgot to point out that there was a Portal 1 door at the start, it’s likely a remnant from early Multi-Core Era. In a scene of the Portal 2 Co-op Trailer, there is also a Portal 1 dropper and in another scene there is a model of a Portal 1 styled Cube Button, likely a remnant from Core Hub. You also forgot footage of the game being played at PAX 2010. In the Original Ending scene, the Core Attachments are Core Receptacles and Wheatley’s model for the boss fight is GLaDOS_Wheatley.mdl, an early version of the WheatDOS model. In the Paranoid Sphere footage, the glass breaks after the fade to black, and after another fade to black, the room is shaped different. In the Portal 2 teaser, a Portal 1 door can be seen in the Relaxation Vault scene. There also is an amalgamation between the 12 Decal Door (Likely from Late Core Hub to Mid Multi-Core?) and the E3 beta doors, seen in the Dual Lasers scene of the trailer and the Chamber Reconstruction scene too. If we can find more beta footage then this video can get a remaster. And I think that the button might either be a Super Button or Cube Button in the Paranoid Sphere footage. Also, note that the portal draw ghosts look different. In the Paranoid Sphere footage, the crosshair is VERY broken, as it only shows what was the last portal you placed. In the little animations seen during the demos at E3 and Gamescom 2010, the doors are the 12 Decal-E3 Door amalgamation, but the 12 seen on the left side seems to be replaced by an Aperture logo. Also, before you make a potential remaster, I just want to point out the Adhesion Gel video: It likely might be from the Core Hub Era of development. I mean, midway or late on through the era, since the Portal 1 gun did not have a texture to look dirtier as seen in Multi-Core/E3/Gamescom, and the fact that these gels were being internally developed from likely June 2009 to October or November of that year on a game known as 'paint', which had a lot of stuff ported from the Portal 2 beta, then merged in Late 2009.

[yyu]

it looks like they showed an accidental? tease of the sixense motion stuff in the coop teaser... (nvm its just the custom world movement mimic)
is it possible that the cube landings were rigged?
coop portal outlines slightly different?
and didn't valve done one video showing coop bots flinging through singleplayer portals?
and lastly, does the videos the game ship with have a guarantee to have shown up in public media at least once? do the 2011 refreshes shipped in the game have any differences?