The fastest way to add audio in CapCut

Open your project in CapCut and tap the Audio button at the bottom of the screen — it sits next to Video and Text. You will see four tabs: Sounds, Music, Voiceover, and Extract Audio. Tap Sounds or Music to browse CapCut's built-in library, or tap Voiceover to record yourself speaking directly into the app. Once you choose or record, tap the audio clip to place it on your timeline, then drag it left or right to position it where you want it to start.

If you already have an audio file saved on your phone — an MP3, a voice memo, a song you downloaded — tap the Upload button (the arrow pointing up) in the Sounds tab. This opens your phone's file manager so you can select the file. CapCut will import it and add it to your timeline at the playhead position, which is the vertical line showing where you are in the video.

The audio will play over whatever video is underneath it. If you want to replace the original sound from a video clip entirely, select the video clip on the timeline, tap the speaker icon that appears, and choose Mute. The video stays; only the sound goes away.

Key Takeaways

  • Tap the Audio button at the bottom, then choose Sounds, Music, Voiceover, or Upload to add audio from CapCut's library, record your own voice, or import a file from your phone.
  • Drag audio clips left or right on the timeline to change when they start and stop playing relative to your video.
  • Mute a video clip's original sound by selecting it, tapping the speaker icon, and choosing Mute if you want to replace it entirely with new audio.
  • Adjust the volume of any audio clip by selecting it and dragging the volume slider, which appears as a horizontal line above the clip.
  • Layer multiple audio clips on top of each other — CapCut will mix them together so they play at the same time.

Positioning audio so it starts and stops at the right moment

Once audio is on your timeline, you control exactly when it plays. The timeline shows your video as a horizontal strip divided into sections, each representing a moment in time. Your audio appears as a colored bar below or above the video. Tap and hold the audio bar, then drag it left to make it start earlier, or right to make it start later. The numbers at the top of the timeline show you the exact second where the audio begins.

To trim the audio — to cut off the beginning or end — tap the audio clip once to select it, then look for the small handles (tiny squares) at the left and right edges of the audio bar. Drag the left handle right to skip the beginning of the audio file. Drag the right handle left to cut off the end. This is useful when you have a song that starts with silence, or a voiceover that has a long pause at the end.

If you want the audio to fade in gradually instead of starting at full volume, select the audio clip and look for the fade icon (usually a small curve or wave symbol). Tap it and drag to set how many seconds the fade should take. The same works for fading out at the end.

Adjusting volume and mixing multiple audio tracks

Select any audio clip on the timeline and you will see a volume slider appear — usually a horizontal line with a circle you can drag. Pull it down to make the audio quieter, or up to make it louder. If you drag it all the way down, the audio becomes silent but stays on the timeline; you can always turn it back up later.

CapCut lets you layer as many audio clips as you want. If you add background music and a voiceover at the same time, both will play together. The app automatically mixes them, but you control the volume of each one separately. Select the voiceover and lower its volume so the music is still heard underneath. Then select the music and adjust it so the voiceover is clear on top. This is how you create a professional sound where speech sits over music without either one drowning out the other.

If one audio clip is too loud compared to the others, select it and adjust its volume slider until the mix sounds balanced when you play it back. Use your phone's speaker or headphones to listen — the sound will be different through each one, so test both ways if you can.

Using CapCut's built-in sounds and music library

When you tap the Audio button and then Sounds, you see CapCut's collection of short audio effects — whooshes, clicks, applause, laughter, and hundreds of others. These are free to use in your videos. Scroll through the categories or search by typing a word like "transition" or "laugh". Tap any sound to hear a preview, then tap it again to add it to your timeline.

The Music tab works the same way but with full songs and background tracks instead of short effects. These are also free. Search by mood (energetic, calm, sad) or by genre (pop, electronic, acoustic). Many creators use these tracks because they are royalty-free, meaning you can post the video on social media or YouTube without getting a copyright strike.

Both Sounds and Music let you favorite clips by tapping a heart icon. Your favorites appear in a separate section so you can find them quickly next time. This is helpful if you use the same transition sound or background music across multiple videos.

Recording and editing a voiceover

Tap Audio, then Voiceover, and you will see a red record button. Position your playhead where you want the voiceover to start — tap on the timeline at that spot. Then tap the record button and speak. CapCut records everything you say until you tap the button again to stop. The voiceover appears on your timeline at the exact moment you started recording.

You can record multiple voiceovers in the same project. Record one section, stop, move the playhead forward, and record again. Each one becomes a separate clip on the timeline that you can move, trim, and adjust the volume of independently. This is useful if you want to narrate different parts of your video at different times, or if you mess up and want to re-record just one sentence instead of the whole thing.

After recording, select the voiceover clip and use the same tools as any other audio: trim the edges, adjust the volume, add a fade in or fade out. If you want to delete a voiceover, select it and tap the trash icon.

Importing audio files from your phone

If you have an audio file already saved — a song you downloaded, a voice memo, a podcast episode — you can bring it into CapCut without using the built-in library. Tap Audio, then Sounds, then look for the Upload button (usually an arrow pointing upward). Tap it and your phone's file manager opens. Navigate to the folder where your audio file is stored, select it, and tap Open or Confirm.

CapCut accepts MP3, WAV, M4A, and most other common audio formats. The file will be added to your timeline at the playhead position. If the file is very large or very long, it may take a few seconds to import. Once it is on the timeline, treat it like any other audio clip — move it, trim it, adjust its volume, or add fades.

Imported files stay in CapCut's library under the Sounds tab even after you finish the project, so you can use them again in future videos without re-importing. If you want to remove an imported file from the library, select it and look for a delete or remove option.

Fixing common audio problems

If audio is out of sync with the video — meaning the sound does not match what you see on screen — select the audio clip and drag it left or right on the timeline until the sound lines up with the video. Play back a section to check. This often happens when you import audio from an external file, because the app needs a moment to process it correctly.

If audio is too quiet even at full volume, the original file itself may be recorded at a low level. Select the clip and look for an Equalize or Enhance option (this varies by CapCut version). Some versions have a volume boost feature that can amplify quiet audio. If that does not help enough, you may need to re-record or find a different audio file.

If you accidentally muted a clip and cannot find it, check the timeline carefully — muted audio still appears as a bar, just with a muted icon on it. Select it and tap the speaker icon again to unmute. If audio is missing entirely from the timeline, undo your last action by swiping left with two fingers, or tap the undo arrow at the top of the screen.

Exporting your video with audio

Once your audio is positioned and mixed the way you want it, export the video to save it. Tap the Export button (usually in the top right corner). Choose your resolution and frame rate — the defaults work for most social media. Make sure the audio icon is not muted in the export settings, or your video will save without sound. Tap Export again and wait for the file to process. This can take a few minutes depending on your video length and phone speed.

The exported video will be saved to your phone's camera roll or files app. You can then upload it to social media, send it to someone, or edit it further in another app if needed. CapCut keeps your original project file separate, so you can always go back and change the audio later without affecting the exported video.

Frequently Asked Questions

Can I use copyrighted music in my CapCut videos?

CapCut's built-in music library is royalty-free, so you can use those tracks freely. If you import your own music file, check whether it is copyrighted. Most popular songs are, and posting them on YouTube or TikTok will trigger a copyright claim, meaning the copyright holder gets the revenue instead of you. Royalty-free music sites like Pixabay or Incompetech offer free alternatives.

How do I remove audio from just one part of a video?

Select the audio clip, tap the trim handles at the edges, and drag them inward to cut off the beginning or end. If you want to remove audio from the middle, you will need to split the audio clip at that point. Select the clip, position the playhead where you want to cut, then look for a split or cut option. This creates two separate clips that you can delete one of.

What if my voiceover is too quiet compared to the background music?

Select the voiceover clip and drag its volume slider up. If it is already at maximum and still too quiet, the original recording was made at a low level. Re-record it in a quieter room with your phone held closer to your mouth, or look for an Enhance or Equalize option in CapCut to boost it.

Can I add audio to a video that already has sound?

Yes. The original sound stays unless you mute it. When you add new audio, both play together. Select the original video clip, tap the speaker icon, and choose Mute if you want to remove it and use only the new audio you added.

How long can an audio clip be in CapCut?

There is no set limit. You can add audio as long as your video itself, or longer — the audio will straightforward stop playing when the video ends. Very long audio files may take longer to import or process, but CapCut handles them.