Free · No upload · Works in your browser

Your TikTok audio
is out of sync.

FixTok corrects the audio delay in seconds — entirely in your browser. Files never leave your device.

Fix my video — it's free
FixTok
Loading ffmpeg…
↑
Drop videos or folders here
.MOV · .MP4 · subfolders included
🔒Files never leave your device
offset 133ms

How it works

1
Drop your video
Drag your TikTok export (.MOV or .MP4) into the tool. Folders work too — it scans them automatically.
2
Adjust the offset
The default 133ms fixes most TikTok exports. Use the slider to fine-tune if your device has a different delay.
3
Done
Your browser re-encodes the audio and saves the fixed file — right next to your original, or to Downloads.

Why FixTok

🔒
Fully private
Your videos never touch a server. Everything runs via WebAssembly in your browser tab.
⚡
Instant
No waiting for uploads. FFmpeg runs locally on your machine — as fast as your CPU.
🎯
Precise control
Adjustable offset slider from 0 – 500ms. Fine-tune to the millisecond.
📁
Saves next to originals
Fixed files land right where your originals are. No Downloads folder mess.

FAQ

Why is my TikTok audio out of sync?
TikTok's export pipeline introduces a small audio delay (typically ~133ms) between video and audio tracks. This happens during their re-encoding process, especially on iOS exports.
Does this work on iPhone videos?
Yes. FixTok supports .MOV and .MP4 — the two formats TikTok exports to camera roll on both iOS and Android.
Is it really free?
Yes, completely. FixTok runs in your browser — there are no server costs, so there's nothing to charge you for.
What if the default 133ms doesn't work?
Use the offset slider to fine-tune. Some TikTok versions or specific devices have different delays. Try values between 80ms and 200ms.
Which browsers are supported?
Chrome and Edge support all features including saving directly to your chosen folder. Safari and Firefox work too — files download to your Downloads folder instead.