How would you make a hush style video in SA?
First of all I think that'd look horrible and I'd never do it unless it's for test purposes, I haven't thought of it before so I don't know any exact method because I never experienced trying to achieve such a look but I imagine it'd go something like this:
Using several layers of chroma keying to perfectly mask out the subject whether its cj/nrg/infernus, so thats the first problem out of the way, making everything else orange at this point I'd try to use different brighter/darkers colors with chroma recoloring certain colors on screen depending on the scene I'm editing to give the orange world that 3D depth feel, the only problem I have now is that the car is the only thing thats white, so depending on the scene as well I'll use several chroma keys for the objects in the world that'd look best in white, maybe the building an infernus is going to land or a rail, after all that is done it'll need a lot of polish with masking effects to make it look good for example if other objects are the same color as the car I'd have to mask it out for it to look clean but thats very relying on the actual scene. If I actually try to do this I'll most likely face a lot of problems I'll have to get around (thats what editing is, so I might just try and do it.
Of course theres the easy way like downight did it in his video linked before in this topic by Art, he just picked the color of the car to be chroma keyed as white and added probably two layers, one purely orange and one color corrected as orange and blended them together to look completely orange but still have depth. Still thats cheating if you want to achieve the actual clean look of Hush.
At downigts effect i mean that thing thats all over that last clip, those outlines yknow
It's very difficult to know how an overlay effect is precisely, but to make a wobbly outline effect like this thats roughly following everything, I'd pick certain colors like the cabbie's with chroma keying, blur the footage then overexpose it then add some wave effect to it or a fitting displacement map, then use it as an additive layer with lower opacity.
Backstage [GTAStunting Collaboration] 0:55 - 1:00 and 1:26
How do you create such effects, lines and stuff? Is it AAE? And is there a tutorial?
As Artifex said it can be done with stroke effects but it's not that simple to get that very look in this video with them.
As I always say, I never use AE except for optical flares or RSMB/twitch sometimes because I use an older version of vegas.
I'll get one thing out of the way before I explain how I did this, I draw things in vegas by masking them on say a white solid, this goes for lines and everything else.
So first thing I did was take a side-voew shot of the stunt to get a precise feel for the trajectory and the ratio between the buildings and all the other objects, and using that side-view I drew an actual dynamics projectile graph on the scene.
Then I had this scene of the same place so the goal here was to tilt everything in 3D space to fit to the scene.
Then it's all just polish effects from now on, how I made it look like it's being drawn was simply add a linear wipe transition from right to left on it's 3D layer. Then I added glow then the CC and the fancy camera effects, and other many polish effects like the glows on impact and such things. All the other scenes was done in a similar way, not always precisely the same.
How to archive the professional feeling into videos and those incredible CCs ? Where did you get those ideas ?
Thats a very general question, I didn't really get my ideas anywhere... I get inspired by watching films, TV shows and even watching videos edited by great editors like Pmarci, SentitneS.. infact all of the BT lineup. The CCs are the result of a lot of experimenting, put a certain look goal in your head and try to achieve it till you reach something good and fitting, it's all about the time and effort spent refining the look of the video... exactly like polishing a painting. The professional feel comes from all the tiny details, making things look slick, looking at what does professional editors use in a certain situation, what fonts.. how do they place them on the screen.. what sizes do they use, how do they cut in relation to the sound. You can't really say how to achieve a professional look but the easiest place to start is try to make something that feels simple and elegant.
How did you import the grid and liquid wall in UV? And was the wall created in a different software? 
Every layer of that effect is shown in this video, and it's fully made in Vegas.
[UV]+ VFX OVERVIEWI masked out the whole thing from beginning to end frame by frame, the "liquid" inside the holes is just an overexposed clip done with chroma keying and an overdone CC and the grid is done with Vegas' 3D space editing, very poorly tracked to the scene since most of it will be covered in the actual scene. Then everything is put together and I applied the very heavy UV+ CC on top of everything making it all polished.
Unless you mean the liquid wall that looks like a portal at the beginning of Plak's stunt, that one is a displacement layer tracked frame by frame to the scene.
What's your favourite effect in sony vegas?
You don't simply pick a favorite effect, they're tools that add up to the bigger picture. It's like asking someone who only paints rainbows: Whats your favorite color to use to paint those rainbows? it just doesn't work
Phew thats a lot of writing, I hope I helped
Also excuse me if there are any writing mistakes, I won't bother reading this again
