![]() ![]() (This will make it easy to drag and drop the effect on anything we need in the future.) First, hold CTRL and select the Line Boil Frame Rate and the Turbulent Displace effects. Now that the expression and Slider Control are set up, we can save out everything as a preset. Now you can just set the Line Boil Frame Rate using the Slider Control, instead of having to input it manually in the expression. Use the Pick Whip to link the expression to the Slider Control. ![]() Next, click and drag the Pick Whip for the Random Seed setting to the Slider Control. Highlight the number value in parenthesis after posterizeTime. Then, use your mouse to highlight the number value after Posterize Time in the expression. Select the Slider Control and press Enter to rename it Line Boil Frame Rate. To do this, apply a Slider Control to the Adjustment layer. We can make the line boil easier to animate by adding a controller for the line boil frame rate. Line boil effect animating at 12 frames per second. The result will be a much faster line boil effect on our animation. To do this, we just need to input a value of 12 instead of 4 in our expression, like this: Let’s say we want a faster Line Boil at twelve frames per second. We can easily change the frame rate of the line boil effect by changing the number value for Posterize Time in our expression. Line boil effect animating at 4 frames per second. Now the Turbulent Displace effect is changing randomly four times per second, giving the illusion of a line boil effect on our animation. For this, we’d input this expression for the Random Seed setting: Plus, we want the Random Seed to be a random value between 0 and 100. Let’s say we want our line boil to change four times per second. We’re going to input an expression that will change the Random Seed effect to a random value at a set frame rate. This will open up the expression options for the Random Seed effect. (Hold Option and click on a Mac.) Hold Alt and click on the stopwatch icon for Random Seed. Then, hold Alt and click on the stopwatch icon for Random Seed. Toggle down to the Evolution Options for the Turbulent Displace Effect. These random changes will create the look of a line boil on our animation. For this, we need the Turbulent Displace effect to change randomly at a frame rate we set. I typically only use higher values with text, for exaggerated movements.) (For animations, lower values usually look better. For the Size, I suggest between 20 and 60. Apply the Turbulent Displace effect.įor the Amount, I recommend setting this between 5 and 10. The two effect settings we’ll need to adjust are the Amount and Size of the displacement. This is the core effect we’ll use to create our line boil. Next, apply the effect Turbulent Displace. Visual examples with and without a line boil effect.Ĭheck out Jason Boone’s tutorial on Creating Hand-Drawn Line Boil Animations, if you’d like to know more about creating this effect by hand.įirst, create a new Adjustment layer above your animation. However, we can add our own line boil effect to existing animations and text in After Effects, to give them more of a handmade feel. It gives the animation almost a “bubbly” quality, hence the term “boil.” It’s a common occurrence with hand-drawn or painted animations. By downloading, you agree not to resell or redistribute these free assets.Ī line boil is a visible effect that occurs when frames of an animation don’t align perfectly. ![]()
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