You are viewing an archive of the old fxhome.com forums. The community has since moved to hitfilm.com.

the predator cloak [ANSWER]

Posted: Fri, 22nd Jun 2007, 10:47pm

Post 1 of 18

DJP444

Force: 800 | Joined: 14th Oct 2006 | Posts: 37

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

can someone create a tutorial to create the predator cloak effect?
Posted: Fri, 22nd Jun 2007, 10:52pm

Post 2 of 18

SketchWork

Force: 2065 | Joined: 11th May 2007 | Posts: 386

VisionLab User VideoWrap User PhotoKey 2 Pro User MuzzlePlug User PowerPlug User Windows User MacOS User

Gold Member

The effect you want to experiment with is the displacement effect. This can create the transparent phased effect on your character.

Go here: http://fxhome.com/compositelab/ and look at the example at the bottom of the list called displacement.
Posted: Fri, 22nd Jun 2007, 11:46pm

Post 3 of 18

DJP444

Force: 800 | Joined: 14th Oct 2006 | Posts: 37

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

yes i have seen it but i still dont understand how to do it
Posted: Fri, 22nd Jun 2007, 11:49pm

Post 4 of 18

DJP444

Force: 800 | Joined: 14th Oct 2006 | Posts: 37

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

o and i mean that say 3 people were in the shot and only 1 was invisible
Posted: Fri, 22nd Jun 2007, 11:54pm

Post 5 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

Place two of the same clips on the timeline.
Go to the second clip on the timeline and click Composite -> displacement.
And then set the displacement effects to how you want them.
Posted: Sat, 23rd Jun 2007, 12:10am

Post 6 of 18

DJP444

Force: 800 | Joined: 14th Oct 2006 | Posts: 37

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

thank you very much
Posted: Sat, 23rd Jun 2007, 12:17am

Post 7 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

No problem, happy to help smile
Posted: Sat, 23rd Jun 2007, 12:17am

Post 8 of 18

DJP444

Force: 800 | Joined: 14th Oct 2006 | Posts: 37

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

actually i had to use a garbage matte
Posted: Sat, 23rd Jun 2007, 12:30am

Post 9 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

Ok. I just looked it up,I had no idea how to do it and im trying to do the same thing, i went to composite and selected displacement map, now what do I do?
Posted: Sat, 23rd Jun 2007, 12:45am

Post 10 of 18

Wizard

Force: 5941 | Joined: 18th Jul 2003 | Posts: 555

VisionLab User VideoWrap User FXpreset Maker Windows User

SuperUser

Movie wrote:

Place two of the same clips on the timeline.
Go to the second clip on the timeline and click Composite -> displacement.
As you have now discovered, if the goal is to recreate the appearance of the personal cloak effect, as seen in the example clip on CompositeLab's overview page, the above method will not yield the desired results.

Considering that the layer you apply the displacement map to is used as a graph that decides what pixels are displaced on the layer below, simply doubling the layer will have little to no distinguishable affect, seeing as both layers would be identical. Though the layer would be displaced to some degree, it would not result in the appearance of 'invisibility'.

In order to create the appearance of a single individual being displaced, the subject you apply the displacement map to must some how be isolated from its surroundings. This can either be done by scrupulously masking, or by having the subject against a green/blue screen, so that it can be keyed.

This post, written by Tarn, highlights the general process of how he achieved this effect for CompositeLab's overview page. If you need any more assistance, please feel welcome to ask.

Good luck.
Wizard.
Posted: Sat, 23rd Jun 2007, 12:52am

Post 11 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

ok, so I'll try using masks, but how do i do this? First add a mask and then add the displacement? I don't really understand what I have to do...
Posted: Sat, 23rd Jun 2007, 1:27am

Post 12 of 18

Wizard

Force: 5941 | Joined: 18th Jul 2003 | Posts: 555

VisionLab User VideoWrap User FXpreset Maker Windows User

SuperUser

The first step would be to make sure that you have your media properly sorted, placing the footage that you add the displacement filter to above the scenery (background). This is important to remember, as the layer that is displaced is not the layer you add the filter to, but rather, the layer beneath it. Some tend to think otherwise from time to time, which leads to confusion.

Although the order in which you add the mask/filter is not necessarily vital to the success of this effect, it would make more sense to mask the subject before adding the displacement map, considering that what you are masking would be obscured/concealed once you add the filter.

That said, if you plan to use this effect for any prolonged period of time, I strongly recommend using the method that involves keying, rather than masking, as masking is quite time intensive, and not likely to offer as good results. I hope that clears things up for you. If you have any more questions, let me know.

Take care.
Wizard.
Posted: Sat, 23rd Jun 2007, 1:32am

Post 13 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

Sorry, I'm not really good at understanding things, could you just tell me step by step instructions?
Posted: Sat, 23rd Jun 2007, 2:54am

Post 14 of 18

Wizard

Force: 5941 | Joined: 18th Jul 2003 | Posts: 555

VisionLab User VideoWrap User FXpreset Maker Windows User

SuperUser

Absolutely, I will try to explain it further. Just so you know, to an extent, I am assuming you know the fundamentals of the programs, as I am unaware of your current experience and understanding of them. Forgive me if I miss certain details that you require, and be sure to let me know if you need something explained more thoroughly.

To begin, you are going to need the appropriate media. As I have said before, one video that has been duplicated, and placed above the other, will not work for these purposes. The first piece of media you will require is a background plate; this can consist of anything, and will depend on the scene in question. The second layer is what you will be adding the displacement filter to; for the purpose of this explanation, I will assume you are attempting this with a video of a person.

When you add a displacement filter to this layer, you will notice that not only the person has been affected, but the entire frame has become distorted as well, which is obviously not the intended effect. This is why it is necessary to isolate the subject from its surroundings, either by masking, or by keying.

To mask the person, click the layers "Mask" track (the layer you will be adding the displacement filter to), and select "Freehand". If using CompisteLab, a garbage matte is recommended over a mask. To use a garbage matte instead of a mask, select "Matte", then "Garbage Matte". The mechanics of a garbage matte are relatively identical to that of a mask, so you shouldn't have any difficulties in that respect.

Now, draw the mask around the subject as accurately as possible. Once you are satisfied with the shape, click "Animate" (seen on the right) to fully close the shape, and begin animating. Then invert the mask by clicking the toggle button next to "Invert shape: off", found below feather. You will now have to scrub through the entire project, making sure that the mask follows the subject throughout.

After that is done, add the displacement map filter to the second layer. That's it; you have now successfully re-created the predator effect. Customizing the effect to gradually turn the subject invisible will require some more complex masking, which I will leave up to you.

This is a rather hastily written explanation of how to use a displacement map, so it would be understood if you have a question or two. Had I not been in a hurry, I would have put more effort into providing a better explanation, but hopefully this will suffice. As always, if you need anything else, feel free to ask.

Take care.
Wizard.
Posted: Sat, 23rd Jun 2007, 9:34am

Post 15 of 18

SketchWork

Force: 2065 | Joined: 11th May 2007 | Posts: 386

VisionLab User VideoWrap User PhotoKey 2 Pro User MuzzlePlug User PowerPlug User Windows User MacOS User

Gold Member

To get the best from the displacement effect you'll need to shoot a clean plate and put your actor footage over the top, then when you apply the displacement effect on the actor you want hidden you'll see through him and see the clean plate underneath, but with a cool displacement effect.
Posted: Sat, 23rd Jun 2007, 2:50pm

Post 16 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

Ok, I understand everything but the backround plate. what is it? and you said it could be anything? Is it the same area I filmed before without the actor in it? But besides the backround plate I completely understand what your talking about.
Posted: Sat, 23rd Jun 2007, 4:02pm

Post 17 of 18

SketchWork

Force: 2065 | Joined: 11th May 2007 | Posts: 386

VisionLab User VideoWrap User PhotoKey 2 Pro User MuzzlePlug User PowerPlug User Windows User MacOS User

Gold Member

Background plate or clean plate. What it means is for you to shoot a shot of your location with no actors. To get this done well you need to shoot on a tripod and not move it. . . or use a very expensive mechanical arm to do your shots smile

Then when you put the displacement effect on your actor you see the displaced background through him.

Or... Shoot your actor on green screen and composite them on the clean plate abd put the displacement on your actor that way.

Hope this makes sense.
Posted: Sat, 23rd Jun 2007, 5:00pm

Post 18 of 18

Movie

Force: 456 | Joined: 18th Jun 2007 | Posts: 104

CompositeLab Pro User EffectsLab Pro User MacOS User

Gold Member

ok thanks, I think I've got it smile