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Introduction

This is the result we will create, giant waterfalls text containing flowing waterfall footage, shrinking smoothly into the dark green background. Let's get started. Hello, welcome back to the complete Adobe After Effects series from Cerdas Inovasi Digital. A track matte is a way to use one layer as a window for another layer. With an alpha matte, the non-transparent parts of the matte layer determine the visible area. Text containing video is a classic example of this.

Step 1: Footage and text

Create a composition from the forest waterfall footage. Type 'waterfall' with the Areal Black font, size 320 pixels, any color, centered on the screen. The text will become the matte, so its color does not matter.

Step 2: TrkMat Column

Make sure the text layer is directly above the footage. If the track matte column is not visible, click the toggle switches mode. On the footage line, open the track matte dropdown and select the text layer. By default, the type is alpha matte.

Step 3: Alpha Matte Result

The footage is now only visible within the letters. After Effects automatically disables the text layer display, as its purpose is only as a matte. Ria is transparent outside the letters and displays the black background composition.

Step 4: Solid Background

Create a dark green solid and place it at the very bottom. The text containing the waterfall now appears on top of the dark green background that matches the forest tone. Animate the scale of the text layer, 250% at second 0 to 100% at second 2, then press F9.

Step 5: Animating the Matte

Since the matte also scales, the text appears as if receding from the screen while revealing the waterfall.

Step 6: Preview

Play the preview. The water continues to flow inside the moving letters. Footage inside the matte does not scale, as we only animated the text layer.

Done!

Done. We have now understood track matte, using text as an alpha matte, and recognizing the automatically hidden matte. Add a solid background, and animate the matte with scale. In the next episode, we'll learn about luma matte and inverted matte. 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 levels. 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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Cerdas Inovasi Digital Team

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Transcript

0:03Introduction

0:37Step 1: Footage and text

0:54Step 2: TrkMat Column

1:10Step 3: Alpha Matte Result

1:26Step 4: Solid Background

1:46Step 5: Animating the Matte

1:55Step 6: Preview

2:08Done!

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Transcript

0:03Introduction

0:37Step 1: Footage and text

0:54Step 2: TrkMat Column

1:10Step 3: Alpha Matte Result

1:26Step 4: Solid Background

1:46Step 5: Animating the Matte

1:55Step 6: Preview

2:08Done!

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My notes

Questions & answers

Your instructor

Introduction

Step 1: Footage and text

Step 2: TrkMat Column

Step 3: Alpha Matte Result

Step 4: Solid Background

Step 5: Animating the Matte

Step 6: Preview

Done!

Introduction

Step 1: Footage and text

Step 2: TrkMat Column

Step 3: Alpha Matte Result

Step 4: Solid Background

Step 5: Animating the Matte

Step 6: Preview

Done!