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if you're using After Effects forget
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rotobrush because today I'm going to be
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showing you this new plugin called mask
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prompter that's going to be completely
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changing how you're going to be masking
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in the future it uses Ai and it's so
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much faster than rotobrush it's as
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simple as this
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so I have this shot set up where we have
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two spaceships from our sci-fi pack so
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first off what we're going to do is
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we're going to duplicate hitting Ctrl D
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or command D on our keyboard on the
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background footage with Kevin in it and
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we're going to put it above R2 floating
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spaceships
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um then we're going to go over to our
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effects and presets and search up mask
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prompter
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and we're going to
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put it on there so there's a couple ways
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that you can actually initiate this but
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for this one I'm going to show you with
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the points method so we're going to
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check mark one of the points and you
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have a couple here
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and then it selects something but that's
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because it's at uh the corner here and
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if you move this around it sees that
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it's trying to guess what you're trying
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to select here so I can probably select
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this building I can probably try to
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select
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that building but if we move it right on
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top of our Kevin here we can just put it
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right there now we can um play forward
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and and this is really cool because when
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we're playing forward
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it's so much faster than rotobrush
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because it's doing it in real time
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and for a shot like this
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I could just leave that point there and
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it stays on Kevin the entire time now if
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Kevin if I put this point let's say here
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and Kevin moved off of the frame what
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you're going to have to do see it's not
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clicking on him anymore you're going to
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have to animate it by going to your
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point here and adding uh clicking on the
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stopwatch to create a keyframe and then
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moving down the timeline and sort of
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making sure he is selected the entire
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time
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there's also something called negative
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points so if you go to negative points
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here and you click on one and you move
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this and say we didn't want his head or
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or his neck or his
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um pants you know depending on what you
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want to do you can you can go in and
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select different things that you don't
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want or say it's grabbing onto a
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building you can put that point on top
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of a building but we don't need that
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right now so I'm going to deactivate it
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so there's a couple other options here
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like Edge enhancement so small Edge
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enhancement and basically that's just
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blurring off the edges just a little bit
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uh there's High basically trying to
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smooth it up and guess uh what you want
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keyed and depending on your settings uh
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you can change this to whatever I might
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leave it to medium and see what that
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gives us
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um now you're probably saying okay now
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how is it going to be cutting it out you
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have to change change the output method
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instead of to Overlay and you can
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actually change the overlay strength so
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you can you know actually see what
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you're masking here
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um and also there's overlay hints which
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is where it's just going to show you
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where your point is
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um but if you change this to matte you
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can actually see the mat and you can
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also turn on transparent and then as you
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can see we now have and if I solo this
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layer Kevin by himself I also like to
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add the effect key cleaner on top of
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mask prompter because it softens things
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up a little bit and makes things kind of
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nice so I'll put in key cleaner here
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that just makes the edge a bit nicer and
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then we can also add something like a
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simple choker or something to this and
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choke the output just a bit so we're not
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seeing as much sky on his chin
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I might add on top of this like a
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refined hard matte and when you do that
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I'm going to just turn off every single
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setting
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except for decontaminate Edge colors and
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then you can see whenever I turn that on
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um turn it off it's taking the edge of
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it and extending out the edge a little
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bit to make it look
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a little bit cleaner
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and then I can take these spaceships and
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3D track them into the scene
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by um just going to track stabilized
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track camera let it solve
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then once it's solved I'm going to
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create a solid in camera in the general
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position I want the ships to be
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then I'm going to make uh the spaceships
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3D layers
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place them in the scene accordingly I'm
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going to turn off the visibility of our
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track solid as well and it's done look
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how the mask prompter is so much faster
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than the rotoscope tool and that in this
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particular way easy okay I'm going to
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show you another example all right so we
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have this shot here of Lily walking and
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we want to put this robot behind her so
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again we're going to hit Ctrl D on our
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clip of her and put it above our robot
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all right and I'm going to show you a
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different way of using mask prompter
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this time
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so I'm going to
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add the effect
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mask prompter
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to our clip here
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and instead of uh using the points
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method we are going to make a box with
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the mask box or the rectangle tool and
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if you're not seeing the rectangle tool
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go over cold and click down and click on
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the rectangle tool
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and then we're going to mask just above
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her
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just like that
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and then we're going to go over to mask
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prompter effect and go to the boxes and
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go to path and go to the first one and
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hit mask one
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what you should see is the thing that
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you want to be selected is selected then
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we're going to hit M on our keyboard and
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animate The Masks path by clicking the
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little stopwatch let's go all the way to
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the end of the clip and it's doing
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actually a pretty good job of following
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her but I'm just going to for for for
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sake of showing you uh move this over
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now it could have been like she was over
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here and it's catching things that we
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don't want to see but we want to move it
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right on top of her just like that
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and it's good to just go into like the
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middle of the clip and see if it's good
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and then go into the middle of that you
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know keyframe
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like here and here making sure it's good
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going to the middle of these two
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keyframes here and checking if it's good
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so we do the same thing we're going to
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we can add edge enhancement let's see if
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medium or high looks good
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um and it might be too blurry in my
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opinion so I'm just going to leave it to
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small for right now and see if that
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looks good and I'm going to change it to
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untransparent
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just like that and then we can add key
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cleaner and we can add a refine hard mat
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if we want to get rid of these
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um bright edges here
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um by turning off everything so the
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feather to zero the contrast to zero
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our reduced chatter to zero and turning
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off the motion blur
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and that looks pretty good then it's the
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same exact thing where we uh let's take
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the bottom layer and the 3D camera track
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it so going to right clicking going to
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track and stabilize and clicking track
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camera
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let it solve once this is solved I'm
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going to find a good ground plane so
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just hovering over here finding a good
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ground plane I'm going to click this one
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I'm going to hit set ground plane in
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origin and then I'm going to
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click again and create solid in camera
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then we're going to make the robot a 3D
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layer it's going to get all wonky but
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that's okay
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we're going to place it
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and I'm going to place it where
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the 3D plane is and a good way of
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knowing if your robot is in the right
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position is if that 3D solid if it's
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intersecting the 3D solid then you know
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that it's in the right spot so I'm going
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to just move him up to clip the floor
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just like this and I might rotate it to
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fit the frame a little bit more and then
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we can just delete or turn off the
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visibility of the solid now if we watch
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we have this masked out thing and it's
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so fast and quick and simple yeah I just
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really wanted to show you mask prompter
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I've actually used it in a couple real
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visual effects scenarios and it's a
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really cool tool I'm hoping you want to
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start implementing it as well in your
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stuff and that was it hopefully you
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learned something please remember to
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subscribe like and comment on this video
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If you learned something and uh check
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back for more tutorials in the coming
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future
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foreign
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