Hello YouTube.
Mikeycal here and this video number 21 in my series on utilizing Blender as a video
editor.
Now in the previous video, I showed you guys how you can do the Ken Burns effect.
And, in today's video, I'm going to be introducing you guys to the UV/Image editor and we're
going to be doing "masking."
And we're going to be doing masking specifically to do a Face Blur.
So let's get right to that...
So, the first thing that we want to do is...
I've actually imported a small segment of the movie Big Buck Bunny.
And, what we're going to do is...
We want to blur out this birds face.
And, lets play it back.
We can see how this bird moves.
So, I want the mask of a blur effect to move with the bird.
So, how are we going to do that?
Well we can do that with the UV/Image editor.
So let's stop this, and we're going to go back to the first frame.
And, what we are going to do is...
We're going to go up to this little drop down up here.
And we're going to switch this to a UV/Image Editor.
There we go.
What we want to do first is we want to switch the UV/Image editor to the Mask Mode.
And we can do that by selecting MASK from this drop down here.
Ok.
Now, it gives us an option of New.
That means create a new mask.
We're going to click this.
New Button.
And, by default, it names the new mask, "Mask."
But, we're going to make a blur mask.
So I'm just going to call it "blur" - hit enter.
There you go.
And now we can actually start creating our mask.
Now, you'll notice this little thing, right here.
You can ignore that...
In fact, we can actually just click our left mouse button and move it to the side.
What do we need first?
Before we create a Mask?
Well, we need a reference, first of all.
I mean, I need to see where I'm going to place the mask.
So what we're going to do is we're going to go to "Open" and we're going to select the
same video that we have in our preview window.
There we go.
And now scroll down a little bit.
To get it to the same size.
Or around the same size.
Ok so, this side in the UV/Image editor - we're using this for a reference that we can actually
draw our mask over this and go frame by frame and see how the mask needs to change.
So, what we need to do is...
Let's first go down to the "View" menu, and select Properties.
And that will open up some properties.
And, we need to click...
Let's pull this out a little bit...
We need to click the "Match Movie Length" button and Check "Auto Refresh."
And that should be enough for us right now...
Let's actually go back down to view... and we're going to close that...
And, now, whenever you click and drag...
It will actually play the video in both the preview window and in the UV/Image editor.
Now, It will not play in the UV/Image editor if you click the play button.
This is just how it is.
So let's go back to the first frame, by clicking the little navigation button down here - to
the first frame.
Now what do we want to do.
We want to actually start drawing our mask.
And the way that you do that is...
You hold your Control button down on your keyboard, and while you're holding your control
button down, you left click to place a marker - right there.
So we have our first little marker.
And we want to draw a circle.
So we just have to have a group of markers.
So we're going to find another spot where we want to place a marker.
And I'm still holding down the CONTROL button and hitting my left button - we're just going
to draw this around the face.
I'm just clicking the left mouse button with my control button down.
And you can see that there is a gap here.
And we can zoom in with our mouse wheel.
You can leave this gap here.
It's actually nice to leave the gap there because you can actually see where the beginning
and ending is...
By default, Blender will automatically connect the beginning and ending markers.
But, if you really want to see the connection, you can go down to the mask menu and click
"toggle cyclic."
And it will actually close it.
But, I recommend not to do that because it's nice to know where the beginning and ending
are.
So, let's undo that...
Now, all we need to do is... we actually have a mask layer now.
We just need to go frame by frame and make some changes to it.
And, this is where we're going to need to use this feature down here called "Auto keyframe
insertion".
So if you click this "ON" now, what will happen is, Blender will automatically monitor if
there is a change in shape or position of our mask.
And it will actually insert keyframes automatically.
And this is not the same kind of keyframe inserting that we have when we go to our dope
sheet or our graph editor because we can't actually view teh keyframe insertions, that
are generated from the auto keyframe system, in our graph or dope sheet.
It's completely handled, 100%, by Blender internally.
And, so what we are going to do is...
We have our general shape, and we are on frame 1.
And we're going to go down to our arrow keys on our keyboard.
And if you push the actual right arrow on your keyboard, it will actually take you a
single frame at a time.
And you can see over here, it's showing the frame as we go forward and it's also showing
the green line move.
Now you can see the frames are changing.
And as they change, we need to move the mask layer.
So we can actually select the mask layer by toggling the "A" button - hit the "A" button
once and it deselects, hit it twice and it "selects all."
You can keep toggling it all you want.
This is how you select everything and unselect everything.
Now we can hit our "G" button.
And we can drag it down and place it somewhere where it's covering.
There we go...
And, let's continue moving forward by hitting our arrow keys.
And hit our "G" button and move it down.
Arrow key to the right.
And, it doesn't have to be perfect.
We're doing a blur effect.
It doesn't have to be a perfect coverage.
Just enough to conceal the identity.
You can see this is actually...
It works pretty quickly.
You can fly through this...
I mean once you know that your just select all, G, and moving, and going forward frame
by frame, you kind of fly through it.
And I'm going to use my scroll wheel to scroll down, to zoom out.
And we're going to go forward and I'm going to "G" and move it out of the frame.
And now let's go back to the beginning.
OK?
And let's zoom in - with our mouse wheel.
And let's watch as I drag over this...
How this moves.
Cool right?
Now it's not perfect, and you can actually go to each frame and you can actually select
an individual marker, and you can hit your "G" button, and you can actually adjust it.
And it will fix it for that frame, and it will make the other frames transition from
that position.
So, now you will see...
when I move forward, it is actually moving the shape as well as the whole entire mask
object.
Ok, So, I showed you guys how you can make a mask but we want this to be in the video.
And this back ground here is really just a reference.
We want to get this mask over here.
Onto the preview window.
So, the way that we're going to do that is...
We first right click on our video strip - right down here.
Let's go back to the first frame.
And let's add an "adjustment layer."
Now, when you add an adjustment layer.
If you go over to the properties for that adjustment layer.
Right on the adjustment layer and go to the properties.
You can see that it has a length of 25.
This is another way that you guys can actually make the length of the adjustment layer match
the video layer.
You can just right click on the video strip, and you can see that it has a length of 133.
So, all we have to do is right click on our adjustment layer, go over to Length, 1 3 3
- enter.
And look at that it actually matched the length - perfect.
Now we are going to go to our adjustment layer, by right clicking on it, and we're going to
scroll down.
And we're going to go to "Add Strip Modifier", and we're going to select "Mask."
Now we're going to scroll down and we have 2 buttons, one is STRIP and one is MASK.
We're going to select "MASK."
And you see a little icon here, it looks like a little mask.
If you click on that, with your left mouse button, it will present all of the masks that
we have available to blender.
And we only made one.
It's called "Blur."
So let's click on that...
Now you can see...
Let's actually scroll over this...
And we'll see...
it's selecting a specific area that's going to be viewable.
See how it actually looks in the actual preview window?
Now it's not perfect but this will do the job for just doing a face blur.
Let's go back to the first frame...
Now we want to blur this, and we also want to be able to see the rest of the background.
So, what we need to do is...
We need to right click on our adjustment layer.
We're going to go to the Add menu, and effect strip, and we're going to select "Gaussian
Blur."
There we go.
Now just like we do with the video strips and with the image strips, right click on
the adjustment layer and we're going to hit the "H" button - which is the hide button.
You can also go down to strip menu and you could select Mute strips.
That's the same thing.
And, now, let's select our Gaussian blur layer with our right mouse button.
And let's scroll up.
Ok.
And, what we are going to do is...
We're going to set the blend setting of our gaussian blur to Alpha Over.
And now you can see the actual total video.
But it's not blurred...
Why?
Because we haven't set our blur setting.
So, make sure that you have the Gaussian blur strip selected.
Scroll down and, right down here, in the effect strip section, we have SIZE X and SIZE Y.
And all you have to do is give an X and a Y value and it will blur it.
So, I'm going to blur it with a 20 X, and hit enter.
And you can see how it blurred it.
And we'll do 20 Y.
Enter.
And this will slow everything down, when you actually preview over it.
But, it will now blur the face.
So actually, I'm going to skip ahead some frames.
So you can see that it actually is moving and blurring the face.
It's really slow because it has to render the frame.
So, I just click that and that took seconds for that to actually show me that preview.
But you can see, it's actually moving around and it's blurring it.
So, all we need to do now is... we need to go to our properties window, and let's go
down here and click on properties.
And we need to set our rendering settings - as we usually do.
And hit the animation button.
And when it's finished we'll have a perfect video of this bird with it's face blurred
out.
I think that should do it for today.
I'll see you guys in the next video.