Runway has just introduced a new option called motion brush and with motion brush you could basically bring any part of an image to life
All you have to do is brush over a section and this gives you control over the motion in that very specific area for your video
Now if you haven't used Runway before, this is the leading text-to-video platform, so you could access it at RunwayML.com
Right now motion brush is the new option, so you could try it here, but if you try Runway here, it will take you to the same page
Now here inside of Runway, I'm going to go ahead and start with an image because the way motion brush works is it actually lets you control parts of an image
and turn that part into motion, so you can't do it with text
Although you could generate image previews here with text, but right now I'm just going to use images and upload a file
Now to get good images, there is a free website and it's called Pexels.com, so here you could search for any images
These are royalty free, free to use. And you could always use Dolly or Mid Journey to generate images that are good as well
And all I did right now is search for beach. I'm going to show you a couple of different examples with some of the settings we have, but if you search for beach
just go ahead and click on any one of these and then go ahead and press free download right on top
And then I'm going to upload that image here under the image tab. Now here, typically you would click generate and it will bring this to life, but in this case, we want to use this motion brush option right here
This is going to open this new edit window. I'm going to tap anywhere to get started
And here inside of the image, you have this brush right here, so this purple dots here brush
and then you have the size, which you could decrease if you want really fine refinements
But in most cases, I want to move a big area, so in this case, I want to move the cloud
so I'm going to increase it to be large, and then you could select the parts that you want moved
If you make a mistake, there is an eraser here where you could erase what you don't want included
Now, in this case, I'm going to just change and select all the clouds that I want moved over here
And you could do it with the water too. Anything you want moved, you could go ahead and select it here
And then you have three sliders down here that is going to control speed
So horizontal, if you want things to move faster left to right, you could change it
So if you want things to move slower left to right, decrease. If you want things to move fast left to right, increase
Now, by default, I recommend you stay just right here in the middle
With vertical too, you could do the same thing. If there is vertical motion in the image that makes sense
In this case, if I change the clouds to move vertically, it's not going to make much sense
So I'm going to just not touch that at all, leave it right in the center. I'll show you an example where this makes sense in the very next image that I have right now
And then proximity, if you want things to move in a group, you could go ahead and move this more to the right
And if you want things to be more separated, move it to the left. So a flock of bird, for example, should move together
Clouds should move together. In the middle, by the way, gets me the best results in all my experimentation so far
So I recommend you start here before you generate too much and use up too much credit
And then if it doesn't look quite right or if the speed is not there for you, go ahead and make alterations to these three sliders
So as soon as you're done here, you could go ahead and press save
Then in addition to that, you have camera motion. So that is going to make your image move in the certain parts that you brushed over
But camera movement moves the whole video. So if you want things to basically move in or out or zoom in, you could go ahead and set these options
And then the speed, again, independent from the motion speed, you could set here
In this case, I'm going to keep it simple. I'm just going to generate this based on all the default settings of the motion brush without any additional camera
I'll show you what it looks like in a second. And let me go ahead and play this in full screen here for you
And if you take a look at the clouds, really nice natural movement
And not much movement here happening to the water because I didn't brush the water
Now, if I do brush the water, the water is going to move as well. Now, typically, this moves slowly by default
So if you want to increase how fast the clouds were moving, although this looks pretty natural
but if you want it to be more like a time lapse, take that horizontal slider all the way to one direction to the right
Now, this version, I actually changed the slider on the vertical. So I made the speed change in the vertical and see unexpected things happen when things move vertically
It didn't make sense with this image. So you have to make the decision if you want to change the sliders, the horizontal, vertical, which way you want to go
Because sometimes like in this one where I changed the vertical slider, the speed, I got really bad results
Let me show you one with the vertical slider that makes more sense. Now, here's an image again from pixels
And let's go to motion brush one more time. Click anywhere. I'm going to increase the brush size again
And let's just paint the entire fire here. And I'm going to increase the size here to five
Let's see what that looks like. Everything else I'm going to leave the same
In this case, I want the vertical movement to be even faster than normal. And then I'm going to go ahead and save and generate
So the fire is moving in the right direction, but the speed still needs to increase
So I moved it to five. I should probably move it all the way to the max. This sort of looks like slow motion video right now
It looks pretty good, though. The movement is very nice in the right direction. And so let me show you how to edit existing ones
So right here, if you click the motion brush one more time, which is just underneath every video that you preview
you could go ahead and increase it. So I'm going to go all the way to the 10 to the maximum and see what I come up with
By the way, every time you generate, it will use up credits. So I'm down to 121 seconds
You can see up here, and this is going to use another four. So you need to upgrade sometimes if you run out of credits
So let me slide down. Here's the new one. Let me press play
So the speed is faster. Let me show you the previous. So this was much, much slower
But this actually looked a lot better. This one, it's losing some of the details in the fire
So I notice if I go all the way up or all the way down with any of those sliders
it does make other parts of it not look as good. So this is actually useful if I want some kind of a slow fire
But in most cases, I can get things to move really, really fast. But I could speed this up in maybe an editing software like CapCut
This is a free video editing software where you could double the speed. So experiment with this
Again, use pixels or any other text-to-image platform to create an image
and bring it to life. I hope you found this useful, and I'll see you on the next video