If your CapCut-edited video plays with audio in the editor or on your device—but has no sound after being posted to TikTok—this is almost always due to TikTok's automated copyright enforcement system, not an error in CapCut. However, the issue can also stem from how audio was handled during editing or export.
Below is a platform-by-platform breakdown.
CapCut Online
Users of CapCut Web export MP4 files and upload them manually to TikTok. Sound loss typically occurs due to browser limitations or unverified audio sources.
Cause 1: Browser Export Glitch
- The browser-based encoder may fail to include audio due to memory constraints or blocked media permissions (e.g., microphone access denied—even if unused).
Solution:
- Before exporting, ensure CapCut Online has permission to access media in your browser settings.
- Always download and play the exported MP4 locally before uploading to TikTok. If silent, re-export.
Cause 2: Unlicensed or User-Uploaded Audio
- Any music added via "Upload audio" or recorded externally lacks TikTok licensing metadata. TikTok often mutes such content post-upload.
Solution:
- Use only voiceovers recorded directly in CapCut Web or royalty-free tracks from trusted libraries.
- Avoid external MP3s unless you have full rights.
📍 Important: CapCut Web does not integrate with TikTok's licensed music library. All added audio is treated as user-generated and subject to muting.
CapCut Desktop (Windows / macOS)
Desktop users export video files and upload them separately to TikTok. Audio issues usually arise from incorrect export settings or post-upload copyright actions.
Cause 1: Audio Not Embedded During Export
- Custom export presets may disable audio by default or use unsupported codecs.
Solution:
- In export settings, choose MP4 format, enable "Export audio", and set audio codec to AAC (sample rate: 44.1kHz or 48kHz).
- Test the exported file on your computer before uploading.
Cause 2: TikTok Mutes Audio After Upload
- Even with correct audio, TikTok's Content ID system may silence videos containing unlicensed music—sometimes minutes after posting.
Solution:
- Replace copyrighted tracks with original voiceovers or TikTok-compliant sounds.
- Re-upload the revised video. Check TikTok notifications for "sound muted due to copyright" alerts.
📍 Note: Desktop CapCut cannot access TikTok's official sound library, so compliance must be ensured manually.
CapCut Mobile App (iOS / Android)
This is the most common path for TikTok publishing. Most sound issues here relate to copyright or audio configuration.
Cause 1: Copyrighted Music Triggered TikTok's Filter
- Music from CapCut's "Music" tab that isn't part of TikTok's Commercial Music Library may be muted upon upload.
Solution:
- Before exporting, check if the track shows "Commercial use allowed".
- Prefer sounds labeled "Use TikTok sound"—these are pre-cleared for TikTok.
Cause 2: Original Clip Audio Was Disabled
- Each video clip has a speaker icon. If crossed out, only added audio plays—and if that's muted, the result is silence.
Solution:
- Tap the clip in the timeline → ensure the speaker icon is ON.
- Adjust volume under "Volume" if needed.
Cause 3: TikTok Misinterprets Video as "No Sound"
- If all audio is removed or muted, TikTok may auto-label your post as "no original sound."
Solution:
- Keep at least one audio source active (e.g., voiceover or compliant music).
- When sharing, select "Post with original sound" if prompted.
📍 Pro Tip: Always preview your exported video in your phone's gallery before posting. If it's silent there, the issue is in CapCut; if it's silent only on TikTok, it's likely copyright-related.
Always remember:
- Local playback = your edit is fine
- Silent only on TikTok = copyright enforcement
Thank you for using CapCut!