Transcripts
1. Course Introduction: Hi, I'm Devin charge. My profession. I'm an engineer, but I've
been using DaVinci Resolve extensively for
regulating purpose for projects like these. Lately I've also been using the same skills for
prediction mapping, where then you take your video editing
skills and applied to holiday card and
achieve projects like this to fill out and
build on you and you return. Now, the safety follower you join along on this journey and we'll learn
a bunch of cool stuff. Let's explore the effect
we are going to learn. Now when it comes
to special effects, green screen as one of the
most commonly used techniques. It's also called
chroma key and most softwares wherein we replaced a green background with any desired background
applicable to our video. For example, in this
particular case, let's say we wanted a
chimpanzee in our video. This video would perfectly work. We'd replace this background to that background
that we desire. And the chimpanzee would
be part of our video. The challenging aspect here
is this works well and good if we have a video
available with green screen. But in most cases, the subject that
you actually need is part of a movie
scene or a song. It's not actually available with a green screen backgrounds. So that's when things
get challenging. In those cases, having the ability to extract
your subject out of any background is a
tremendous advantage when it comes to having
content for your shows. For example, what I needed was a horse carriage from a funeral. So I use this particular video from YouTube where you can see the background is certainly nothing related to
a haunted mansion. I extracted the horse and carriage and put it
as part of the video, as you can see here. Of course here I added some other effects to make it
look a little more ghostly. But the essential
objective is to have the ability to extract any
subject out of any background. Now, extracting a subject
from any background can be achieved using After Effects as well as DaVinci Resolve. In DaVinci Resolve, it is only available in
the studio version, which costs about $300. Also, the important
factor is even if you use the paid version
of DaVinci Resolve, you do have to have a very good graphics card for this particular
effect to work. It's extremely
taxing. For example, my laptop does not really have
a very good graphics card. It took to process
ten seconds of clip, which makes the
feature pretty much unusable, at least for me. So what we're gonna do today is we're going to use this clip. Use Elsa as our
subject extractor from this particular
background and have a green screen background
for this video. That way is we can
use the content more effectively and
more creatively. And we're going to
learn to do this, but using completely
free software. Now since we're on the
topic of green screen, we'll also go over how to extract background
from an image. You don't really need
green screens for those, but you still want to get
rid of the background. So we'll make sure to cover
processing images as well. The example we'll use this, we'll use this image
from Elsa. Again. We'll extract Elsa
from this background. So jump along the right
and let's get going.
2. Change Video Background To Green Screen Background: Here we go. This is
the software which is completely online as
called runway ML. I'll post a link for this particular software
and our description. It's a completely free software that is a paid version as well. For example, as
you can see here, the only downside with the free version as
it only allows 720 p, it does not allow Stan ATP. But in most cases the
subjects that you're extracting may not take
up the whole screen. So 720 P works completely fine. In terms of Cloud storage. It gives you one GB
of cloud storage, whereas the paid versions give
you a more cloud storage. But the fact is if you want
using this tool at all, you'd have no Cloud
Storage anyways. So one GB is just a bonus. You can always delete the clips
that you are already done processing so that waste
storage isn't really a concern. Also, you just need to login. You can login using
a Google account. It's completely
free and let's get started. So here we are. Once we are done
creating a login, this is a screen
where we land up at. As you can see, there are no
new projects at the moment, you create your first project. So we'll use this method. Click Create new project. Here it gives you a bunch of
options like if you want to create a video composition or
green screen and painting. So we'll mainly
focus on these two. With video composition,
you're mainly using it more as a traditional video editing software where
you can cut clubs, joined clips, layer
a bunch of clips, add text, et cetera. But what I'm guessing
is we already have a pretty good video
editing software locally. And our primary focus today is to get working on green screen. So this is what you'd select, but just in case you want
it to do a decimal stuff, let me give you a quick tour of what video composition includes. So in case you hit
video composition, you see a timeline right here. There are some demo
as such, you can use, for example, I'm just going
to use this as an example. There we go. This is just a regular old
clip on a timeline. And you can drag a bunch of clips on multiple
different layers. And in case you wanted to
use green screen from here, this is more like a
superset when you select a particular clip and had
green screen right here, this takes you to the same place that way we would land up if we selected a
green-screen project gives you the same option. But this is just to show you a good overall picture of how the complete software
interface looks like. You can edit some of
the clip property is like the position, the resolution, rotation
or less stuff right here. If no clip is selected, as you can see, the same
resolution as ten ATP. And as we discussed
in the free version, we can only work with
a 720 peak clip. But don't worry
about this just yet. When we're exporting, we have
the option to export 720 p, Since the aspect ratio for the 720 and NADP is the exact same. So nothing changes when it comes to clip placement
and layering, there's a bunch of other
things that you can do. You can add in text,
solid background. Sometimes you can use this to replace the background under the desired clips so
that you can have different colored
backgrounds than you have bunch of
templates right here. So feel free to
explore the software. It does have more capability than just extracting a subject. For now, I'll head
back to our projects. Back to projects as we can see, one of our projects are saved. I'm just going to delete it in the essence of saving memory. I'll create a new project again, and this time I'm
going to select green screen. That's it. So as you can see, the number of options here are limited. And this is primarily catered towards creating
green screen footage. So now I'll import the clip, the frozen clip that we
just spoke off. Here it is. That's it. You can just drag
and drop the clip. When it comes to downloading
clips from YouTube, you can use any online
YouTube Downloader available. You can also use Firefox
as your browser, which has add-ons that will let you download YouTube videos. Finally, if you want and choose
the most safest approach, you can also choose to just screen record the selected clip. And that works not
only with your deal, but also works with things
like Netflix and Disney. The characters you want
are on those apps. You can display them on screen and record the
particular section. Again, Google Chrome may not support screen
recording feature. You gotta use a
browser like Firefox. So once you have the clip
that you desire uploaded, just drag it to
the timeline here, this works pretty much like
most standard software. They have a timeline and a
cursor that you can move along now that we have our clip imported, It's pretty
straightforward. As you can see here. The software itself
suggests the next steps. What I personally do is come to a frame where your
subject is pretty clear. For example, a frame
like this works. So here you can see
a complete subject. And the subject has quite a bit of contrast
from the background. The better the contrast, the easier it is for
the software and the more accurate
your mask will be. So just select the
different textures. As you can see, the software is automatically highlighting
the detected subject. So there we go, just do clicks
and I pretty much covered. Here you can preview as well. As you can notice some aspects that are a little jittery here. It seems to have
miss the cape here. So I'll just put one
more click right here. There we go. So let's
continue previewing. There it is. Right now, it looks pretty
good to be honest. Here, the hair is missing. I'm just going to click
the hair once again. Here we go. Going to track back,
as you can see, it's tracked the
clip back as well, and it took absolutely no time and no processing power
from your computer. So let's play through, let's say by mistake, I happen to click
this and there's some extra stuff that you
don't want God selected. So in this case, what
you can do is just to exclude and switch it up. There it is, you can remove something that you
accidentally included. So as you can see, the subject
is tracked quite well. Now let's go over some
of the other settings. Here you have feather. Feather basically defines how sharp the edge is going to be. Right now the feather is at 0, as you can see here. Some of the edges
are quite rough. This is not what you want. You want a little bit of feather so that the edges are smart. So you don't want it
all the way cranked up. It looks more of
a ghostly effect, as well as some of the
colors get excluded. This is not what we want. We want just a little bit of feather so that the
edges are not jagged, then you have include and
exclude as we went through, you have this setting right here where you can see overlay. Then there's preview where you can see it using a green screen. And you have alpha. So when you do an overview here, you can control the
transparency SN, essentially like no transparent to
completely transparent. But in most cases
what you wanna do is just use green screen
just to preview. There we go. So essentially this is
what the clip looks like. I'd say this has done
a fairly good job of masking and this
is perfectly usable. Trust me, even some of the advanced softwares
don't make life as easy. So that's it. Once you're done masking, you'll be back to the page
where you have your timeline. By the way, practically when
you're extracting a subject, what you first want
to do is cut the clip exactly to the size
that you need so that the software is only processing that desired clip length and is not busy processing
the entire clip. So for that, let's say V1 to start our
clip at this point, have your play head there, and then you can right-click
and say Split at playhead, you can also hit the
split icon right here. And then I'm just going
to delete the other half. And you can use
these techniques for pretty much any movie
scene, any songs, as long as the image
has decent contrast, this should work
absolutely fine. You can also change the
color of your backgrounds. In most cases, all you
want is green or blue, one of the two backgrounds. In case your clip happens
to have a bunch of green, it would be nice to have a blue screen backgrounds
so that you can chroma key out fairly easy in the software that
you're planning to use. You want to hit Export in case you want NADP, like I said, you've got to go to a paid
plan which is 15 bucks, 20, perfectly well,
that's all I'll do for now and just hit Export. Now what you'll observe is the clips are not
exported instantly. You've gotta come
back right here, your menu and go to project. And here within asset, you will see
processing says it's thirty-seven percent right now. Once the processing is done, the clip will be
available for download so that it is a processing
has done a 100 per cent. It'll also send you
an e-mail, I believe, but you can just come
back and check in case your clip happens to be long
and it takes extremely long. They go, just hit download. There it is, That's a clip right there. Let's
play the clip. As for the subject itself, the software does
a fairly good job, especially considering
that the software is free and extremely easy to use. So there you go, guys. Now
you can extract pretty much any character out of any movie scene or any
song that you desire, best wishes on your creations. Looking forward to
checking them out, please do share. Buh-bye.
3. Chroma Key: Remove Green Screen: Okay, now for some fun
green screen stuff, by the way, green-screen, blue screen, it's all the same. The intention is to have a unique color that can
be completely masked out. Since we've already
created mass here. So you guys are familiar
with the concept. So let's, let's do the curtain, which is relatively easy. I just want to
click the curtain. So as you open, first task is to make
them Blues disappeared. So what we're gonna do
is go to color again. This is a curtain right here. Remember we didn't mask
anything on the cut and front. So the steps are the same. Anytime you want
something like a stencil, you need to have an
Alpha add alpha output. Disconnected the last time. Yeah, don't worry about
everything going blank. Let you guys know
how to fix that. So the last time we
created our vendors, we drew stuff as
to what we wanted. Now, we are going based on color rather than
based on shape. We are going based on color. As you can see, this
is blue right here. So we go to the color
picker rather than window. We go to the
qualifier, hit color. This is how most
people on YouTube will show how to use chroma
key in DaVinci Resolve. The actual true way to do
it is change HSL to 3D. That's what you want to
do. Once you've done that, you get a neat little pen. All you have to do is draw. You've drawn something,
you just keep drawing until all the blue
that you see is gone. As straightforward as that
and always hit the day spill. In this case, it's not as
prominent, but trust me, you want to hit the next tab, this window right here. You can't see
anything beyond this. So that is kind of
a software thing that you have to work with. So in order to fix that, my work around for that
as just draw a border around the portion you
want around the clip. So all you do is take your pen. I know this seems awfully lot
like the mosque we created, but this stuff is pretty straightforward and does
not have to be as precise. All you need to do is
draw a box around it. So the entire thing
just comes back. Okay, cool. So this was I flip. And as you move along, you can see when
the curtain opens, the blue is gone and
there's nothing back there. Okay, now, let's work
on putting the monster. So this is another clip
you just get from YouTube. This one has quite a
bit of sound effects, so you might want to
leave the sound in there. Let's just have him sit down. Okay. I'm just going
to clip right there. Zoom in on my timeline. Let's stop right there. This kinda looks awkward. This is not what we want. This guy has to fit in there. So that's easy. You just hit Transform Again. You can do all of it. Zoom, position, rotation,
Everything's right here, but this transform works
better like I mentioned. And you don't want the size. I'd just like to take them off. It's just a lot of
unnecessary sides. I know this is completely
a waste of time to do it, but for illustration purposes
it just makes it easy. Okay, so there we go. So what I'm gonna do is
per term right here, just get a good size. Okay. So let me just scrubbed
through this. Okay. So this is where
the curtain opens. So I'll have him right here. One time to fit right in there. Let's have him sit right there. Looks pretty calm and collected. It's waiting for
his big entrance. And as you guys
might have noticed, if I put this guy on
top of the curtains, doesn't make sense, right? So this is where the
layering comes in handy. You have to have this
below the curtains. So it actually makes sense. And again, this guy, we do have to take the green
screen out for the monster, which shouldn't be easy, exactly as we did last time. We click this guy
and alpha output. Just hook him up. Let me just scrub through
the clip a little bit. Get to Color Picker, you mean qualifier, get to
3D. Just hit something. In fact, in most cases
that would happen, that fixed the opposite. All you need to do is
hit and what you get. Here we go. Now had dispel. There we go. Now, he is relatively clean. Let's come back
right here. Okay. So we have a similar issue
like we had last time, where it chopped off the image. So you guys know what to do. All you need to do
is come to Window, just draw a random border
around the subject. It doesn't have to
be precise at all. As long as you don't chop off
the subject, you are good. There we go. That's all you need to do. It's like a work around. I struggled with
that quite a bit. It's like a glitch
that you have to work around. There we go. So once you do this, that's this guy sitting by the
calm, cool, and collected. So what's missing right
here is the background. Just to make it seem like it
is truly like a good arch. So give me a second.
You know what? I'm just going to use
the wooden frame that we use previously that we have. Second. Okay. Let me hit those
magnets again so that my clips are aligned well. So as you can see, I can choose
to work very hard in here or just this bag drawn
put up right there. So I'll have him
sit right there. And ideally, the reason
we traced out the garage, the insights of the garage just so that you could
give perspective. So you can actually give
perspective to this one, this wooden plank as well, so it aligns perfectly
with the sides and stuff. But for now, in the
essence of time, so that I don't
bore you to death. I won't go into all that detail. And yet this layer
should be at the bottom, ideally, because that's at
the back of the garage. So what I'm gonna do is just move all three
layers down there. Just get the garage right here. Okay. As you notice, there's some black
spots right here. That's because I was
lazy trying to cut the sky during color correction
was like a weird gut. So let me try and fix that. There we go. So sometimes it doesn't help
to be lazy and save time. So there we go. That's fixed. Hopefully that's fixed. Let me check it out real
quick. I'll turn it off. Okay. So again, my choice of colors
is pretty questionable. They will look like
the same thing, but I bet you can do a much better job than
what I did right here. So he'll be sitting right
there waiting for you. Okay. So now lastly to finish the
green-screen section off, i'm, I do want to show you
how to chroma key out. The green screen is extremely
difficult to chroma key. Let me show you an example. For example, this is the
clip I had at my intro. This is me talking in
front of the green screen. Yeah, that's me right there. As you can see, this is my basement that I
just painted green. There's bunch of shadows. The green is not uniform like the digitally
created footage we had. We had some extra stuff
going quite clearly. There's a bright
spot right here. And if you notice that there's a bunch of green spillage on me, like for example, the edges
of my shirt or green. So you can just mask
everything out. I'll look like an amoeba,
pretty shapeless. So let's try and work this
guy out. Let's clean it up. So I'll just give myself the same word background
that I don't know. For some reason,
my son's going up. So let me just cut the
footage so that we don't deal with this massive
footage for no reason. Okay, So we're here. We want a mosque me out. I mean, monster
green screen out. What we do is let me just fit. We follow the exact
same steps of output, qualifier 3D here. And then we start picking stuff. As you can see,
things are going in, but like last time, it's not in one go. We do have to add N word because the objective is
to keep me in the frame. So there we go. So as you see, it's
pretty terrible. There's still a bunch
of green going. So we keep doing this. And to narrow this down to get a 100% accurate and you're not relying on just
your bare vision. What do you wanna do is you want to hit this Highlight button. That way is it kind of shows you your selection and then you
want to hit black and white. This is where if anything
in black is taken out, anything as white as left. So as you can see, I don't want these sections to be part of it. I'm going to take these
guys out right here. This is going to be
challenging because this is kind of white light
as opposed to green. So those are always challenging. But this is the
safest way to do it. And show that you're
not relying just on your bare eyes to
distinguish color. It's just pure black and white, anything that's white space. Now you can revert
head color again. That's what it looks like. The green spillage as talking about now you can clearly say, I do look quite
green to be honest. So now when you hit the
spill, it clears me out. So that is why this is one of the most fantastic
softwares to chroma key. Like you saw. This is what my
green screen as is as pretty much as bad as
a green screen can be. You can see the
switchboard right here, light's pretty bad. Yet you achieve a
fantastic green-screen. And of course, you want
to chop this side off and you can just chroma keyed because it's
not really green. So same as before. You just take a pen, just draw a border around me. Just random border should
work and they go, I am out. In fact, since
we're on the topic, let's just make it right. There we go. That's all I do. To be honest, since this bunch of light
here, you know what? I'm just going to make
myself slightly bigger. Oops. And I kinda
look sleepy there. That's how green-screen works. In demonstrators also, possibilities are
endless because there's so much footage out
there that you can just pretty much use anything
on your prediction mapping. Yeah. Thank you. See you
in the next video. Guys, since I last
recorded that goes, there have been a
couple of updates. Now. We have diamonds
because all the 18. So here are the updates with
regards to green screen, I'm using the same clip. So as you can see,
there's the garage sin and we have our little
monster up here. And we're gonna do this
in differentiating, is just that some of the buttons and layouts have updated. So we'll jump to the
color page again. As you can see, we are
on the right clip. We will go back to qualify. And in this case,
3D looks like this. It's like a brush with
some links in here. So we'll jump here to 3D. As you can see, some of
the controls are updated. I'll go extremely quick here. First and foremost, we
need to add alpha output, can make blue to blue. That's it. Here. You've gotta use
the plus Becker. There we go. That's basically it inverted. And then use the
D spills slider, which is right here.
That's basically it. And demonstrate resolve 18. And in fact, in
DaVinci Resolve 18, there's one key update that
makes this a lot more easier. I'm just going to
disconnect this reset node greater
the weight was. We're just going to go
back to the edit page. In fact, all of the chroma key can be done completely
in the edit page, and it is way easier here. So here's the update. Go to Open Effects. Hit the search bar right here, and MKS effects are not visible. You just need to hit
this button. Okay? So in here, Open 3D
subtree leak here. This is exactly the same
controls that we used. Dragon on your clip. Once you're dragging
this effects button right here would be highlighted. And if this entire
panel is not visible, you want to hit inspector. Jump into effect. And now you'll
notice that this is the exact same thing that
we used on the color page. It just makes life
a lot easier to keep all your work
in the edit page. Same thing, we'll hit the Add. And then here as you see, nothing happened in order for
this election to be valid, you have to select Open Effects. So then you get Open
Effects Controls. Again. Go to the plus,
just draw a line. In this case, you've
noticed that the inward was automatically taken
care of, which is good. And then you have your
dispel slider right here. That's basically it
guys, as two clicks, you don't have to add
alpha output and stuff. You don't have to jump screens. You can add everything
right here. And the aspect where I showed where you want
to make sure all your, you got all your green-screen. You can change it right here. You can do black and
white where you can see everything else is black. That means all this is going
to get masked right off. And only a monster, which is why it is
going to show up. So that's how you
can double-check if everything works perfect, and then you can switch back to the final composite.
So there you go, guys. So you can use this
technique moving forward. In some of the course pages, I have used the old technique
where I use the color page. It does come in handy sometimes, in some cases when you
want some degree of masking with regards to
Windows as well as chroma key. In that case, you can still
use the color page technique, but in general, to quickly go
through your green-screen, just use the 3D here and edit. And it should make
life a lot easier. There you go, guys,
looking forward to your creations best wishes. See you in the next class.
4. Remove Image Background: Now to extract your subjects, when it comes to images, you don't really
need a green screen. Here we go. This is the website that makes it extremely easy. Of course you can use your
software like After Effects, DaVinci Resolve or, or any photo processing
software, create masks. But trust me, it
takes a lot of time. This is the most efficient
way to extract your subject. Just upload your
image right here. You can drag and
drop your image two, and the image
should be processed completely automatically. There it is. It's literally one click and your
download the image. And in case you had
to make minor tweaks. You hit the edit
button right here. Hit erase slash restore. You can control the brush size, which is this particular circle. And then in case you want
to erase more stuff, you do something like
this and erase it. And if you want to
restore that back-end, just hit Restore. There it is. That's how easy and
straightforward it is. And once you're done, just
hit download. That's it. And you'll notice that the image is always saved and PNG format, DNG is the only format that
helps save transparency. Jpeg or JPEG formats don't
export transparency. So PNG format is what you'll
get out at the software. So that's it. That's fairly
straightforward and makes your workflow
extremely convenient. And you can just drag and drop as many images as you like. So there you go, guys, Best
wishes and your creations, looking forward to it.
Telwin George
