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2025's #1 Audio Video Sync Solution

Fix Out of Lip Sync Problems Instantly

Free AI lip sync tools, step-by-step guides, and instant fixes for TV, streaming, video editing & content creation. Works on all devices.

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100% Free Guides
Works for All Devices
Updated Dec 2025

AI-Powered Audio Video Sync Detection

✓
Sync Aligned
0ms delay detected
AI Processing
175+ Languages
Interactive Diagnostic Tool

What Are You Experiencing?

Select your situation below to get instant solutions for your out of lip sync issue. Our diagnostic tool helps identify the exact cause and fix.

đŸ“ē

TV & Soundbar Audio Delay

Audio is ahead or behind the video on my television, soundbar, or home theater system

đŸŽŦ

Video Editing Desync

Audio drifts out of sync in Premiere Pro, DaVinci Resolve, or other editing software

🤖

AI Lip Sync & Dubbing

Need to translate videos to other languages with matching lip movements

⚡ Instant Solutions

Most Common Lip Sync Fixes

These three solutions resolve 80% of audio video out of sync problems. Try them first before diving into advanced troubleshooting.

01
⚙ī¸

Adjust Audio Delay Settings

Most TVs and soundbars have a built-in lip sync adjustment. Navigate to Sound Settings → Audio Delay and adjust between 0-250ms until audio matches video.

View TV Settings Guide →
02
🔊

Switch to PCM Audio Format

Dolby Digital and DTS processing adds latency. Change Digital Audio Output to PCM in your TV settings for the lowest possible audio delay.

Learn About PCM →
03
🔄

Power Cycle All Devices

HDMI handshake issues often cause sync problems. Turn off TV, soundbar, and streaming device. Wait 30 seconds, then power on in order: TV → Soundbar → Source.

Full Reset Guide →
🤖 AI-Powered Solutions

Best AI Lip Sync Tools 2025

Compare the top AI lip sync generators for video translation, dubbing, and content creation. From free options to professional-grade solutions.

HeyGen

★★★★★ 4.7

Industry-leading AI avatars with emotional lip sync. Supports 175+ languages with natural expression preservation.

175+ Languages Emotion Control API Available
$29/mo Try Free →

Vozo AI

★★★★★ 4.6

LipREALâ„ĸ technology handles complex multi-person scenes, side angles, and partial occlusions with precision.

Multi-Person Side Angles Fast Processing
$29/mo Try Free →

Sync.so

★★★★☆ 4.5

Developer-first API with millisecond-level precision. Zero-shot model works on any face without training.

API-First Zero-Shot Ultra Fast
$0.95/min View API →

LipSync.video

★★★★☆ 4.3

Completely free browser-based lip sync tool. Perfect for quick social media content and testing ideas.

100% Free No Signup Browser-Based
Free Use Now →
📚 Step-by-Step Guides

Fix Audio Delay on Your Device

Device-specific instructions to resolve lip sync issues. Select your TV brand or streaming device for tailored solutions.

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Samsung TV Lip Sync Fix

Settings → Sound → Expert Settings → Digital Output Audio Delay

View Guide
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LG TV Audio Delay Fix

Settings → Sound → AV Sync Adjustment → Manual Delay

View Guide
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Sony TV Lip Sync Fix

Settings → Display & Sound → Audio Output → A/V Sync

View Guide
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Vizio TV Sync Settings

Menu → Audio → Lip Sync → Adjust slider until aligned

View Guide
✨ See the Difference

Experience Perfect Audio Video Sync

Our AI-powered lip sync technology analyzes your video frame-by-frame and automatically aligns audio with lip movements. The result? Natural, seamless playback that looks like it was filmed natively.

Frame-Accurate Detection

Detects sync issues down to 1ms precision for professional results

Preserve Background Audio

Keeps music and sound effects intact while fixing speech sync

Multi-Speaker Support

Handles conversations with multiple people seamlessly

Before 😖

Audio delayed 150ms
Lip movements don't match

After 😊

Perfect 0ms sync
Natural lip alignment

OBS Settings Streamlabs

// Fix audio sync offset in OBS Studio

Audio Mixer → Click ⚙ī¸ Gear Icon

Advanced Audio Properties

├── Sync Offset (ms): -50 to +200

├── Audio Monitoring: "Monitor Off"

└── Track: 1

// For progressive drift issues:

Settings → Output → Recording

├── Type: "Custom Output (FFmpeg)"

└── Container: "mp4" (CFR mode)

🎮 Live Streaming

Fix OBS Audio Sync Issues

Streaming audio delay is one of the most frustrating issues for content creators. Whether it's a constant offset or progressive drift over long streams, these steps will help you achieve perfect synchronization.

1
Open Advanced Audio Properties

Right-click on any audio source in the Audio Mixer, select "Advanced Audio Properties"

2
Adjust Sync Offset

Add positive value if audio is ahead, negative if behind. Start with 50ms increments.

3
Match Sample Rates

Ensure all audio devices use the same sample rate (48kHz recommended for streaming)

4
Test with Recording

Record a short test clip with visible claps, then verify audio aligns with hand contact

đŸŽŦ Professional Editing

Sync Audio in Video Editing Software

Step-by-step instructions for fixing audio video desync in popular editing applications. Covers VFR conversion, manual alignment, and automated tools.

Adobe Premiere Pro

Industry Standard NLE

1 Right-click clip → "Unlink" audio and video
2 Select audio track, drag to align
3 Use "Synchronize" for multi-cam
4 Re-link or nest for export
Full Premiere Guide

DaVinci Resolve

Free Professional Suite

1 Select clip in Edit page timeline
2 Inspector → Audio → Offset
3 Enter ms value (+ or -)
4 Use Auto Sync for external audio
Full DaVinci Guide

Final Cut Pro

Apple's Pro Editor

1 Select clip → Clip → Detach Audio
2 Position playhead at sync point
3 Drag audio to match video
4 Create Compound Clip when done
Full Final Cut Guide
💰 Budget-Friendly

Free Lip Sync Software Directory

Comprehensive list of free and affordable tools to fix audio video sync issues. Sorted by use case and platform compatibility.

Tool Name Type Rating Price Platform
🎭
Wav2Lip
AI Lip Sync ★★★★☆ 4.2 Free (Open Source) Python / Colab
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VLC Media Player
Audio Delay ★★★★★ 4.8 Free Windows / Mac / Linux
⚙ī¸
FFmpeg
Video Repair ★★★★★ 4.9 Free (Open Source) Command Line
🌐
LipSync.video
AI Lip Sync ★★★★☆ 4.3 Free Web Browser
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HandBrake
Video Repair ★★★★☆ 4.5 Free (Open Source) Windows / Mac / Linux
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OutOfLipSync (HuggingFace)
AI Translation + Sync ★★★★☆ 4.4 Free Web / API
📊 Detailed Analysis

AI Lip Sync Tools Feature Comparison

Side-by-side comparison of the leading AI lip sync generators. Compare features, pricing, language support, and output quality to find your perfect match.

Feature HeyGen Vozo AI Sync.so Kapwing Wav2Lip
Languages Supported
 175+ 100+ 40+ 70+ Any*
Multi-Person Support
 ✓ ✓ ◐ ✗ ✗
Emotion Preservation
 ✓ ✓ ◐ ✗ ✗
API Available
 ✓ ✓ ✓ ✓ ✓
Free Tier
 Limited Limited ✗ ✓ ✓
Processing Speed
 Fast Fast Very Fast Medium Slow
Starting Price
 $29/mo $29/mo $0.95/min $16/mo Free
📈 Trusted Worldwide

The Numbers Speak for Themselves

Join thousands of creators, editors, and home theater enthusiasts who have solved their audio video sync problems with our guides and tools.

500K+
Videos Fixed
50K+
Active Users
4.8
Average Rating
175+
Languages Supported
đŸŽ¯ Real Applications

Who Uses AI Lip Sync Technology?

From marketing teams to educators, discover how professionals leverage lip sync technology to reach global audiences and enhance their content.

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Marketing & Advertising

Create localized ad campaigns that feel native to each market. AI lip sync lets you repurpose video ads for 100+ countries without reshoots.

Video Ads Localization Brand Content
📚

Education & E-Learning

Translate educational content to reach students worldwide. Maintain instructor presence while delivering lessons in learners' native language.

Online Courses Tutorials Training
đŸŽŦ

Film & Entertainment

Professional dubbing for films, documentaries, and streaming content. Preserve original actor performances while translating dialogue.

Movies Documentaries Streaming
đŸ’Ŧ User Reviews

What Our Users Say

Real feedback from content creators, home theater enthusiasts, and video professionals who solved their sync problems.

★★★★★

"Finally fixed the audio delay on my Samsung TV after months of frustration. The PCM audio trick worked instantly. This site is a lifesaver!"

M
Michael R.
Home Theater Enthusiast
★★★★★

"The AI lip sync tool comparison saved me hours of research. Went with HeyGen and my translated videos look completely natural now."

S
Sarah K.
YouTube Content Creator
★★★★★

"OBS audio sync issues were killing my streams. The advanced audio properties guide fixed everything in 5 minutes. Thank you!"

J
James L.
Twitch Streamer
🔌 Technical Deep Dive

Understanding HDMI ARC vs eARC for Lip Sync

HDMI Audio Return Channel (ARC) and enhanced ARC (eARC) are common sources of lip sync issues. Here's what you need to know to fix audio delay problems.

HDMI ARC

Up to 1Mbps bandwidth. Supports Dolby Digital 5.1 but adds processing latency. Common source of sync issues.

HDMI eARC

Up to 37Mbps bandwidth. Supports Dolby Atmos, DTS:X with auto lip sync correction built-in.

Full HDMI ARC Guide →

Quick Troubleshooting Checklist

🌍 Global Reach

Video Translation with AI Lip Sync Workflow

Transform your content for international audiences. Our step-by-step workflow shows how to translate, dub, and synchronize videos to any language.

📤

1. Upload

Upload original video file (MP4, MOV, AVI)

→
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2. Transcribe

AI extracts speech and creates transcript

→
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3. Translate

Convert to target language (175+ options)

→
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4. Voice Clone

Generate speech matching original tone

→
👄

5. Lip Sync

AI regenerates lip movements to match

❓ Common Questions

Frequently Asked Questions

Quick answers to the most common audio video sync questions. Can't find what you're looking for? Contact our support team.

Why is my audio out of sync with video? +
Audio-video desynchronization is caused by several factors: HDMI ARC/eARC handshake delays, Bluetooth codec latency (SBC: 200ms, aptX: 80ms), video processing time on TVs, streaming buffer issues, variable frame rate (VFR) in recordings, and driver conflicts. The human brain detects sync issues beyond 45ms delay.
How do I fix lip sync on my Samsung TV? +
To fix lip sync on Samsung TV: 1) Go to Settings > Sound > Expert Settings > Digital Output Audio Delay. 2) Adjust the delay value (typically 0-250ms). 3) Try switching to PCM audio format. 4) Disable any motion smoothing features. 5) Check HDMI cable quality and connection.
What are the best free AI lip sync tools? +
Best free AI lip sync tools in 2025 include: LipSync.video (completely free, web-based), Wav2Lip (open-source), OutOfLipSync on Hugging Face (translate + sync), Kapwing (free tier available), and VEED.io (limited free usage). For professional needs, HeyGen and Vozo AI offer advanced features with paid plans.
How do I fix audio delay on my soundbar? +
Fix soundbar audio delay by: 1) Enable HDMI eARC if available for lower latency. 2) Switch audio format to PCM instead of Dolby/DTS. 3) Use the TV's lip sync/audio delay adjustment (usually in sound settings). 4) Update soundbar firmware. 5) Try optical cable instead of HDMI ARC.
Why is Netflix audio out of sync? +
Netflix audio sync issues are usually caused by: 1) TV audio processing delays - try Game Mode. 2) Bluetooth device latency - use wired connection. 3) App cache corruption - clear Netflix cache. 4) HDMI handshake issues - try different HDMI port. 5) Streaming quality fluctuations - check internet speed.
How does video translation with lip sync work? +
Video translation with lip sync combines speech recognition, machine translation, text-to-speech, and AI lip generation. The process: 1) Transcribe original audio. 2) Translate text to target language. 3) Generate new voice matching original speaker's tone. 4) Use AI to regenerate lip movements matching new audio.
How do I fix OBS audio sync issues? +
Fix OBS audio sync: 1) Go to Audio Mixer > click gear icon > Advanced Audio Properties. 2) Add positive or negative sync offset (in milliseconds). 3) For progressive drift, check if using VFR source and convert to CFR. 4) Update audio drivers. 5) Match sample rates between devices (usually 48kHz).
What causes audio drift over long recordings? +
Progressive audio drift is typically caused by: 1) Variable Frame Rate (VFR) recordings from phones/screen recorders. 2) Different sample rates between audio and video sources. 3) Clock drift between separate recording devices. Solution: Convert VFR to CFR using HandBrake, and ensure all devices use matching sample rates.
📖 Technical Terms

Audio Video Sync Glossary

Understanding the terminology behind audio video synchronization helps you troubleshoot issues more effectively.

Lip Sync

The synchronization of lip movements with audio. When "out of lip sync," the mouth movements don't match the spoken words.

HDMI ARC

Audio Return Channel. Allows audio to be sent from TV to soundbar over the same HDMI cable. Limited to 1Mbps bandwidth.

HDMI eARC

Enhanced Audio Return Channel. Up to 37Mbps bandwidth, supports lossless audio and includes automatic lip sync correction.

Latency

The delay between input and output. Measured in milliseconds (ms). Humans notice audio delays above 45ms.

PCM Audio

Pulse Code Modulation. Uncompressed digital audio format that typically has lowest latency compared to Dolby/DTS.

VFR (Variable Frame Rate)

Recording format where frame rate changes during capture. Common cause of progressive audio drift in screen recordings.

💡 Pro Insights

Expert Tips for Perfect Sync

Advice from professional audio engineers, video editors, and streaming experts on achieving flawless audio video synchronization.

🎧

Audio Engineer Tip

15+ years experience

"Always monitor through the same chain your audience will hear. If you're mixing for streaming, test on the actual platform before delivery. Sync issues often appear only in the final compressed output."

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Video Editor Tip

Hollywood Post-Production

"For multi-camera shoots, always record a sync clap at the start of each take. The visual of hands meeting + the audio spike creates an unmistakable sync point that saves hours in post."

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Home Theater Expert

Certified THX Installer

"Don't trust 'Auto' lip sync settings. They work 80% of the time but fail on edge cases. I always manually calibrate using a test pattern with visible and audible sync markers."

🎮

Streamer Pro Tip

1M+ Twitch Followers

"For long streams (3+ hours), sync drift is inevitable. I do a quick sync check every hour using an on-screen clap. OBS offset adjustments can be made live without stopping the stream."

đŸ“Ĩ Free Downloads

Sync Test Files & Resources

Download professional sync test videos, calibration patterns, and PDF guides to diagnose and fix your audio video synchronization issues.

đŸŽŦ

Sync Test Video (4K)

Professional sync calibration video with visual flash and audio beep markers.

Download MP4
📄

Complete Sync Guide PDF

50-page comprehensive guide covering all sync issues and solutions.

Download PDF
⚙ī¸

OBS Sync Preset Pack

Pre-configured OBS profiles optimized for different streaming scenarios.

Download ZIP
đŸ“Ŧ Stay Updated

Get the Latest Sync Tips

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🤝 Trusted By

Compatible With All Major Platforms

đŸ“ē Samsung
đŸ“ē LG
đŸ“ē Sony
🔊 Sonos
🔊 Bose
🎮 OBS
đŸ‘Ĩ Join the Community

Connect with Fellow Creators

Join our Discord community to get real-time help, share your sync solutions, and stay updated on the latest tools and techniques.

Community Highlights

J

@JohnEditor: "Just fixed 3 hours of footage using the VFR guide. Lifesaver!"

2 hours ago â€ĸ 24 upvotes

S

@StreamerPro: "The OBS preset pack is incredible. Zero sync issues now."

5 hours ago â€ĸ 18 upvotes

ℹī¸ About Us

Why OutOfLipSync?

We created OutOfLipSync.com after experiencing the frustration of audio video desynchronization firsthand. Whether it's a home theater setup that won't cooperate or videos that drift out of sync during editing, we've been there.

Our mission is to provide the most comprehensive, accurate, and up-to-date resource for solving all types of lip sync and audio video synchronization problems. From quick fixes for casual viewers to advanced techniques for professional editors, we've got you covered.

2025
Founded
50+
Guides Published
24/7
Community Support
✉ī¸ Get In Touch

Need Custom Help?

Can't find a solution to your specific sync issue? Reach out and our team will help you diagnose and fix the problem.

Ready to Fix Your Audio Video Sync?

Join 500,000+ users who have solved their lip sync problems with OutOfLipSync. Start with our free diagnostic tool today.

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