Help with certain editing techniques: Face replacement?

[Hubby77]

Hello guys, I'm new so I don't know if this is in the right section, but I need help knowing/identifying 2 techniques from a edited video.

Original video

http://www.youtube.com/watch?v=8jTHfdgCiDU



Edited video

http://www.youtube.com/watch?v=H32SIISkc-Y




The 2 techniques I want to identify are at the 7sec and the 22sec mark of the edited video. At 7sec mark replaces the word "Titan" with "Gaben" and at the 22sec he has replaced the Eren's face and has replaced it with Gabe's face. What are those techniques called?

I'm using Sony Vegas 12 Pro also.

[poisondeathray]

It's done with layers and compositing , and yes, it can be done in vegas

You basically have to do a "cut out" using the pen tool to "cover up" your replacement footage . It's the same idea as photoshop with masks and layers . Layers on top "cover up" layers on the bottom . The face replacement requires an extra step in keyframe animation of the face (you manually move it over where you want, setting keyframes)

There should be some basic step by step tutorials for these topics on youtube

[Hubby77]

Could you link me, please?

[poisondeathray]

Seach for "sony vegas face replacement youtube" , there should be dozens of them.

It's the same idea for "titan" or replacing that text with whatever you want. The replacement text "sticks" to background by manually keyframing the movement

Unfortunately, vegas doesn't have a motion tracker, so you have to do the keyframing manually

[Hubby77]

Alright thank you.

[poisondeathray]

If you are stuck and still need help after watching a few tutorials, give a shout and someone will probably help you. But you at least have to take some initiative

[Hubby77]

okay

[Hubby77]

I couldn't find any good tutorials, but I figured that I could just paste the photo onto the video and move it keyframe by keyframe as you said.

[poisondeathray]

You need to mask out the photo to isolate the face

I don't know if any of these are good I didn't watch them. But the 2nd one covers bezier masks.
http://www.youtube.com/watch?v=8WOjsQPoj_E
http://www.youtube.com/watch?v=cnvrGLuIm3g


Some basic videos on masking, animating layers (again I don't know if these are good)
http://www.youtube.com/watch?v=bXtaOQCyDTY
http://www.youtube.com/watch?v=AoyM9IGR0hI

[Hubby77]

Oh, I ioslated the face using photoshop and pasted it on a transparent background, saved it has a .png. I'll have a look at those links thanks!

[poisondeathray]

Yes, photoshop is better for mask selections (more powerful and more tools); but it can actually be done right in vegas with bezier masks and the pen tool

Another reason to do this in vegas - you will need multiple layers if you want to reproduce something similar. Do you see at 22sec in the face replacement section, the hair covers the face and is moving (blowing in the wind) ? This means the hair was masked out or rotoscoped (it's animated, not static - ie. the masks move along with the waving hair). This means the layer track order must be :

copy of original video, but with hair rotoscoped out
face layer (e.g. cutout from photoshop)
original video (background)

[Hubby77]

Ohhhh, thank you soo much for that!

[poisondeathray]

Does it make sense ? If you don't have waving hair , or only have the face "covering" the background (no waving hair "on top" of the face), then you don't need extra multiple layers

[Hubby77]

Well I grabbed my face and a picture of one of the frames with the hair covering the face, and pasted both into photoshop in the same psd. My face was the top layer and I cut out where the should be.

[poisondeathray]

So are you using that exact same video ?

If you want it done the same way, you need the full face exposed in photoshop (areas beneath the hair have to be visible). The masking of the hair has to be done in vegas, because it's animated and covers on top of the face

[Hubby77]

Yea, I'm using the same video (the original one).

So I need a full face exposed (without my actual hair?) in photoshop, and mask the hair onto my face using vegas.

[poisondeathray]

Yes, you need enough of the replacement face, that when the cartoon hair moves, it will reveal your replacement face "underneath".

For example, your cutouts posted above won't work, because as the cartoon hair moves, there will be empty spots revealed (where there is alpha channel or transparency)

[Hubby77]

Alright, thank you for your help! really wanted to know

[Hubby77]

So according to the second link you sent me (the one that talks about bezier masks), I can make a mask and set the mode to 'negative' the layer below it will appear in masks outline?

[poisondeathray]

Sorry , I didn't watch it . But you can "invert" masks - instead of including the region of interest, you can exclude instead

In this case, you just want to mask out the hair with the usual way on the top layer. The cartoon hair mask is animated with keyframes, so it "follows" the hair as it moves . Since it's on the very top layer, it "covers up" your replacement face layer

1) copy of original video, but with hair rotoscoped out (animated mask)

2) replacement face layer (e.g. cutout from photoshop, but can be done in vegas) . Animated with keyframes to "follow" and "cover up" the original cartoon face

3) original video (background)

[Hubby77]

So layed like this?

[poisondeathray]

Yes that looks right . The top layer has to be rotoscoped (the cartoon hair mask has to be animated with keyframes) , and the middle layer, the face replacement also has to animated with position keyframes, because the shot is panning (not a static shot)

You probably only need 1 audio track, delete or mute one of them

[Hubby77]

Do I need to rotoscoped all of his hair, or just the parts that cover his face?

[poisondeathray]

Only the parts that cover the face . Everything else is derived from the background layer, because it's unchanged. No need to do more work than you have to

[Hubby77]

alright thanks for everything btw!

[redwudz]

Hubby77, in the future please use a more descriptive subject title in your posts to allow others to search for similar topics. I will change yours this time.
From our rules:

Try to choose a subject that describes your topic.
Please do not use topic subjects like Help me!!! or Problems.

Thanks,
Moderator redwudz

[budwzr]

Only the parts that cover the face . Everything else is derived from the background layer, because it's unchanged. ...

Yes, and you're essentially "decompositing" the original video into usable elements that can be "recomposited" with new material.

This is that critical point where the unwashed masses slip off the wall and fall into the abyss. The 3rd dimension can be either exciting or scary depending if you're Columbus or not.

Why don't you post your result and let us expound on it?

Mwahahahaha