Step-by-Step Guide to Creating a Progress Bar Animation:

Step 1: Setting Up the Composition

1. Open Adobe After Effects.
2. Create a New Composition and rename it to “Progress Bar Animation”.
3. Set the resolution to 1920×1080 Pixels, frame rate to 30 frames per second, and duration to 10 seconds.

Step 2: Creating the Background Stroke

1. Select the Rounded Rectangle Tool from the Toolbar.
2. Set the fill color to None and stroke to a solid white color with 5 pixels.
3. Draw a rectangle shape as shown in the reference image.
4. Align the shape to the center.
5. Rename the shape layer to “Stroke” (or your preferred name) and lock the layer.

Step 3: Creating the Fill Line

1. Select the Pen Tool from the Toolbar.
2. Draw a straight line and increase the stroke width.
3. Align the line to the center.
4. Rename the shape layer to “Fill”.
5. Select the Anchor Point Tool and move the anchor point to the left side of the line.

Step 4: Adding Trim Paths Animation

1. Open the Fill layer properties.
2. Under Contents, click the Add button and choose Trim Paths.
3. Click the stopwatch icon next to Trim Paths to add a keyframe at the first frame and set the value to 0%.

Step 5: Animating the Fill Line

1. Go to 8 seconds on the timeline.
2. Increase the End value under Trim Paths to 100%.
3. Select both keyframes and right-click. Go to Keyframe Assistant and choose Easy Ease.

Step 6: Adding Text with Slider Control

1. Select the Type Tool from the Toolbar.
2. Add text (e.g., “100%”) and align it to the center.
3. Right-click on the text layer, go to Effects > Expression Controls, and choose Slider Control.
4. Open the Slider Control properties, then open the Effects control panel.
5. Hold the Alt key and click the stopwatch icon next to the Slider to add an expression.
6. Drag the pick whip to the Slider control.

Step 7: Animating the Slider

1. Add a keyframe at the first frame with a value of 0.
2. Go to about 8 seconds on the timeline and add another keyframe.
3. Change the Slider value to 100.

Step 8: Customizing Decimal Values

1. If you want to round the decimal values, modify the expression.
2. Type: Math.round(effect("Slider Control")("Slider"))+"%"
3. This expression rounds the slider value and adds a percentage symbol.

Step 9: Adding Style

1. Select the slider keyframes, right-click, and choose Easy Ease.
2. Select the Fill layer and change the stroke color to yellow or your preferred color.

Step 10: Completion

Congratulations! You have successfully created a Progress Bar Animation in Adobe After Effects.