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Introduction

This is the result we will create, an earthquake effect on a city building footage, with the shaking increasing, peaking, then fading, and it can be turned on or off with a single checkbox. Let's start. Hello, welcome back to the complete Adobe After Effects series from Cerdas Inovasi Digital. Numbers inside expressions are static. To make them adjustable and animatable, we will move these numbers to Expression Controls, a special effect containing sliders, checkboxes, colors, or points.

Step 1: Null as Control Panel

Create a composition from the city building footage. Create a null object and rename it to 'control'. Null objects are not visible when rendered, making them ideal for placing all controls.

Step 2: Slider Control

With the control selected, apply the slider control effect from the Expression Controls category, then rename it to 'strength'. Set the slider to 20. This slider hasn't affected anything yet until we connect it.

Step 3: Link wiggle to slider

Press S on the footage and increase the scale to 115%. In position, type the expression wiggle (5), and its amplitude is taken from the slider. Discom.layerControl.efek kekuatan (slider). The building shakes according to the slider number.

Step 4: Earthquake comes and goes

Since the slider is a regular property, it can be keyed. At frame 0 set to 0, at frame 2 set to 40, and at frame 4 back to 0. The shaking now appears gradually, peaks at frame 2, then fades.

Step 5: Checkbox Control

Add a checkbox control to the control and name it 'active'. Change the position expression. If 'active' is checked, use wiggle. If not, use value. Uncheck 'active', then the building is completely still. Check it again, and the earthquake returns.

Step 6: Preview

Play the preview. All of these earthquake settings are collected in one layer control. This pattern also serves as the basis for the template, since sliders and checkboxes can be exported to Essential Graphics. Done.

Done!

We have already used null as a control panel, slider control for amplitude wiggle, keyframe slider for earthquake coming and going, and checkbox control with if-else. In the next episode, we will use index and value at time. Need a promotional video, logo animation, motion graphics for social media, or visual effects for short films? Cerdas Inovasi Digital provides motion graphics and visual effects services, as well as opens After Effects courses from beginner to advanced. Want to master the entire series? 104 episodes from the interface to the final project? All episodes, complete with PDF step-by-step guides, source footage, and project scripts, are available for premium tutorial subscribers. Subscribe starting at Rp69.000 per month, save 28% with the 12-month package, or pay once Rp999.000 for lifetime access. Want just one class? Buy single classes with lifetime access. Subscribe now at the premium page cerdasinovasidigital.com. Contact us via WhatsApp, or visit cerdasinovasidigital.com. Thank you for watching, see you in the next episode.

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Transcript

0:03Introduction

0:38Step 1: Null as Control Panel

0:53Step 2: Slider Control

1:10Step 3: Link wiggle to slider

1:31Step 4: Earthquake comes and goes

1:47Step 5: Checkbox Control

2:07Step 6: Preview

2:23Done!

Ask the class material

My notes

Questions & answers

Your instructor

Recommended classes for you

Need more than a video?

Transcript

0:03Introduction

0:38Step 1: Null as Control Panel

0:53Step 2: Slider Control

1:10Step 3: Link wiggle to slider

1:31Step 4: Earthquake comes and goes

1:47Step 5: Checkbox Control

2:07Step 6: Preview

2:23Done!

Ask the class material

My notes

Questions & answers

Your instructor

Introduction

Step 1: Null as Control Panel

Step 2: Slider Control

Step 3: Link wiggle to slider

Step 4: Earthquake comes and goes

Step 5: Checkbox Control

Step 6: Preview

Done!

Introduction

Step 1: Null as Control Panel

Step 2: Slider Control

Step 3: Link wiggle to slider

Step 4: Earthquake comes and goes

Step 5: Checkbox Control

Step 6: Preview

Done!