You can change it by selecting the clip, opening Animation , then choosing In for fade in or Out for fade out, and adjusting the duration slider or handle to make the fade longer or shorter. Tutorials show this works on CapCut mobile, desktop, and web, and the fade duration is typically controlled in seconds by dragging the slider/handle.

Steps

  1. Tap or click the clip on the timeline.
  2. Open Animation.
  3. Choose In for fade in or Out for fade out.
  4. Select Fade In or Fade Out.
  5. Drag the duration control to the length you want.
  6. Preview the clip and fine-tune it.

Practical tip

A short fade, around 0.5 to 1 second, usually looks clean for most edits, while longer fades feel more dramatic. You can also set different lengths for the start and end of the same clip.

TL;DR: In CapCut, go to Animation , pick Fade In/Fade Out , then drag the duration control to edit how long the fade lasts.