How to Add Audio Fade In and Fade Out in CapCut (2026 Guide)
Ever noticed how professional videos never have music that just slams in from nowhere or cuts off abruptly at the end? That smooth, polished sound comes from one simple technique: audio fading. A fade-in gradually brings your audio up from silence, and a fade-out gently takes it back down to silence. The good news is that learning how to add audio fade in and fade out in CapCut takes less than a minute, and it works the same way for background music, voiceovers, and sound effects.
In this 2026 guide, I will walk you through the exact steps for adding audio fades in CapCut on both mobile and desktop, show you how to build custom fades with volume keyframes when you want more control, and share the common mistakes that make fades sound amateur. By the end, your audio will sound like it was mixed by a pro.
What Audio Fade In and Fade Out Actually Do
A fade-in gradually raises the volume of an audio clip from silence up to its set level at the beginning of the clip. A fade-out does the reverse: it gradually lowers the volume from its normal level down to silence at the end of the clip. The duration of the fade determines how gradual the change feels. A one-second fade sounds punchy and snappy, while a three-second fade feels slow and cinematic.
It is important to understand that audio fades in CapCut only change the volume of the selected audio clip. They do not fade the picture, they do not affect video transitions, and they do not change the pitch or speed of the audio. Once you apply a fade, you will see a smooth slope appear on the audio clip in the timeline, which gives you a visual confirmation of exactly where the volume is rising and falling. If you are new to working with sound, fades are the single easiest upgrade you can make to your audio quality.
How to Add Audio Fade In and Fade Out on CapCut Mobile
Most people edit in CapCut on their phone, and the mobile app has a dedicated Fade control built right into the audio editing toolbar. It only takes a few taps, and the same steps work on both iPhone and Android.
Step-by-Step: Add a Fade to an Audio Clip
Select the Audio Clip
Open your project and find the audio clip on the timeline. Tap directly on the audio clip itself, which is the colored strip with the waveform, not the video clip above it. Selecting the right layer matters here. If you tap the video clip by mistake, the Fade button will not appear, and you will see video tools instead of audio tools.
Open the Fade Panel
With the audio clip selected, look at the bottom toolbar. You may need to scroll the toolbar sideways to find it. Tap the Fade button. This opens the fade panel, which shows two sliders: Fade In and Fade Out, each controlling the fade duration at that end of the clip.
Set the Fade In and Fade Out Durations
Drag the Fade In slider to set how long the volume should take to rise from silence at the start of the clip. Then drag the Fade Out slider to set how long the volume should take to fall to silence at the end. For background music, two to three seconds usually sounds natural. For short sound effects, half a second to one second is plenty. You do not have to use both. If you only want a fade-out at the end of a song, leave the Fade In slider at zero.
Preview and Confirm
Press play to listen to your fade and make sure it sounds smooth. If it feels too fast or too slow, adjust the sliders again. When you are happy with the result, tap the checkmark button to apply the fade. You will see the fade slope appear on the audio clip in the timeline, which confirms the effect is in place.
Fading the Middle of a Clip With Split
The built-in Fade control only works at the very start and end of a clip. But what if you want a fade in the middle, for example lowering music while you talk and bringing it back up afterward? The trick is to split the audio clip so the middle section becomes its own clip, and then fade its edges.
Split the Audio Clip
Select the audio clip and move the playhead to the point where you want the fade to start. Tap Split in the bottom toolbar. Then move the playhead to where you want the fade to end and tap Split again. You now have three separate audio segments, and the middle one is the section you want to fade.
Apply Fades to Each New Segment
Tap the middle segment to select it, open the Fade panel, and set both the Fade In and Fade Out sliders. This creates a smooth dip in the volume exactly where you placed the segment, which is perfect for ducking music under a voiceover or quieting a section of dialogue. This technique pairs perfectly with recording a voiceover in CapCut, since voiceovers almost always need the background music dipped beneath them.
How to Add Audio Fade In and Fade Out on CapCut Desktop
The CapCut desktop editor handles fades a little differently than the mobile app. Instead of a bottom-toolbar button, you work in the properties panel on the right side of the screen. The result is identical, so choose whichever platform you prefer for editing.
Using the Fade Sliders in the Basic Panel
Add your audio clip to the timeline and click it to select it. In the top-right properties panel, make sure you are on the Basic tab. Scroll down to the Fade in and out section, where you will find a Fade-in duration slider and a Fade-out duration slider. Drag each slider to set the length of the fade in seconds. As you move the sliders, you will see a visual representation of the fade slope on the clip, just like on mobile. That is all there is to it. Two sliders, one click to select, and your audio fades are done.
Creating Custom Fades With Volume Keyframes
Sometimes the standard linear fade is not enough. Maybe you want the volume to dip, hold, and then rise again, or you want a fade that is slow at first and fast at the end. For that kind of control, use volume keyframes. Keyframes let you mark exact points on the timeline where the volume changes, and CapCut smoothly transitions between them.
Place Your First Volume Keyframe
Select your audio clip and move the playhead to the exact point where you want the fade to begin. Open the volume property in the right-side panel and click the diamond-shaped keyframe icon next to the volume slider to lock in the current volume level. This keyframe is your starting point, so set the volume to whatever level the audio should have before the fade starts.
Shape the Fade Curve
Move the playhead forward to where the fade should finish, then lower the volume slider to your target level. CapCut automatically adds a second keyframe at the playhead. Now add as many extra keyframes as you need between or around these points and adjust their volume values to shape the exact curve you want. More keyframes close together create faster, steeper changes. Keyframes spread further apart create slower, gentler ones.
Fine-Tune the Fade Timing
Play back the section and listen carefully. If the fade starts too early or lands too late, you can drag individual keyframes left or right on the timeline to reposition them without changing their volume values. Delete any keyframe that is not pulling its weight by selecting it and removing it. Once the curve sounds right, you have a fully custom fade that no preset slider could have given you. For a deeper dive into keyframing, see our guide on using keyframes in CapCut for smooth animations.
When to Use Fade In vs Fade Out
Knowing which fade to use and when is what separates decent audio from great audio. Here is a simple mental model you can apply to every project.
Fade In: Smooth, Natural Entrances
Use a fade-in whenever audio starts and you do not want it to begin abruptly. Opening background music, the start of a podcast intro, a sound effect that sets the mood. A one to two-second fade-in makes the audio feel like it is arriving instead of being switched on. For voiceovers, keep the fade-in short, under one second, so no words get swallowed by the rising volume.
Fade Out: Clean, Professional Exits
Use a fade-out at the end of background music, at the close of a voiceover segment, or anywhere audio would otherwise stop dead. A two to three-second fade-out feels intentional and polished. For short clips like transitions or stingers, a quick half-second fade is enough to remove the click of an abrupt cut.
FAQs
Where is the fade button in CapCut?
On mobile, select an audio clip and tap Fade in the bottom toolbar (scroll sideways if needed). On desktop, select the clip and find the Fade in and out sliders in the Basic tab of the right-side properties panel.
Can I fade only part of an audio clip?
Yes. Split the clip so the section you want to fade becomes its own segment, then apply fade in and fade out to that segment. This is ideal for ducking music under a voiceover.
Why does my fade sound abrupt?
The fade duration is probably too short, or the volume difference is too large for the time allowed. Lengthen the fade or reduce the starting volume so the change is more gradual.
Conclusion
Audio fades are a tiny technique with an outsized payoff. Two sliders on mobile, two sliders on desktop, and your audio goes from amateur to polished. Start using fades on every project and your videos will sound noticeably more professional within a day.
