🎵 Seamless AI Audio Services
Transform your visuals into complete multimedia experiences with our advanced audio and voice synchronization tools. Create promotional videos with background music, generate talking avatars with automated narration, and streamline your complete video production workflow.
🎤 Sound & Speech Integration
One-click background music and voiceover integration that brings your content to life.
Background Music
Add professional background music to your videos with our extensive library of royalty-free tracks. Perfect for promotional content, social media posts, and marketing materials.
AI Voiceover
Generate natural-sounding voiceovers in multiple languages with emotional tone control. Create talking avatars with automated narration for engaging content.
Complete Production
Streamline your video production workflow with integrated audio tools. Create promotional videos with background music or talking avatars with narration in one go.
🎬 AI Lipsync Generator
Create realistic lip-synced videos with AI-powered speech synthesis. Upload a video and add natural-sounding speech with our advanced TTS technology.
🎭 Actor Studio
Choose from our pre-defined avatars to create talking characters with synchronized speech and expressions.
Professional
Business presentations
Casual
Social media content
Creative
Artistic projects
Educational
Learning content
Entertainment
Fun and engaging
Custom
Upload your own
How It Works
Create professional audio-visual content in just a few simple steps.
Upload Your Content
Upload your video or image, or choose from our pre-defined avatars in the Actor Studio.
Add Audio
Select background music, generate AI voiceover, or upload your own audio file for synchronization.
Generate & Download
Our AI processes your content and creates a professional video with synchronized audio.
Why Choose Posternity for AI Audio?
Professional audio integration that elevates your content creation.
Time-Saving
Create complete videos with audio in minutes, not hours. No need for separate audio editing software.
Multi-Language
Generate voiceovers in multiple languages to reach global audiences with localized content.
Royalty-Free
Access a vast library of royalty-free music and sound effects for commercial use.
Perfect Sync
AI-powered synchronization ensures perfect timing between audio and visual elements.
🎬 Sound Editor in Action
Watch how our revolutionary sound effects technology automatically adds cinematic audio to any scene.
🎵 This scene was fully created and voiced using the Posternity Editor.
You only need to write what you want for the sound effect. If your video includes a moving vehicle—like the train in this example—the Posternity Editor will automatically add appropriate sound effects. Explosion scenes will be matched with explosion sounds, and natural elements like wind or waves will also trigger fitting ambient effects.
🎬 Sound Editor in Action
Watch how our revolutionary sound effects technology automatically adds cinematic audio to any scene.
Vehicle Sound Effects
Trains, cars, planes, and motorcycles are automatically detected and matched with authentic engine sounds, brakes, and movement audio.
Action & Explosion Effects
Dramatic scenes with explosions, gunfire, and impacts are automatically enhanced with professional sound design and audio effects.
Natural Ambient Sounds
Environmental scenes with wind, water, fire, and weather are enriched with realistic ambient soundscapes and atmospheric audio.
🎬 In the Posternity Cinematic Universe, anything is possible — and everything is just one click away.
Experience the future of automatic sound design with our intelligent audio system.
🎬 Desert Tank Battle Sound Effects
Experience the power of automatic sound design in military action scenes
🎵 Heavy Tank Battle in Desert Environment
This scene showcases automatic sound detection for military vehicles. The Posternity Editor automatically adds tank engine sounds, track movement, desert wind, and battle ambient effects. Main battle tank maneuvers, motor assembly sounds, and desert environment audio are perfectly synchronized with the visual action.
🎬 Digital Soundtrack and Sound Mix
Discover how our AI creates perfect audio balance between music and effects
🎵 Soundtrack and Sound Mix Technology
Experience the perfect blend of soundtrack and sound effects. The Posternity Editor intelligently balances background music with digital screen effects and flying vehicle sounds. Our AI ensures that music enhances the scene without overwhelming the crucial sound effects.
🎬 Futuristic Urban Soundscape
Witness the future of urban transportation with advanced sound design
🎵 Urban Soundscape for a Futuristic City
In this futuristic city scene, flying vehicles navigate between skyscrapers with collision sounds and forced bridge landings. The Posternity Editor automatically adds tire spark sounds, engine effects, and urban ambient audio. Experience the perfect blend of sci-fi sound design with realistic physics-based audio effects.
🎤 Why Choose Posternity Lip Sync?
Create realistic lip-synced videos with AI-powered speech synthesis and advanced TTS technology
15+ Natural Voices
Choose from a diverse library of natural-sounding voices including male, female, and various accents. Perfect for any content type and audience.
Perfect Lip Synchronization
Our advanced AI technology ensures perfect synchronization between speech and lip movements, creating realistic and professional results.
Lightning Fast Processing
Generate lip-synced videos in minutes, not hours. Our optimized AI processes your requests quickly while maintaining the highest quality standards.
Multiple Video Formats
Support for MP4, AVI, MOV, and other popular video formats. Upload any video and our AI will handle the rest with perfect compatibility.
Advanced TTS Technology
State-of-the-art Text-to-Speech technology with natural intonation, emotion, and pronunciation for the most realistic speech synthesis.
Smart Speech Recognition
Our AI understands context, emotions, and natural speech patterns to create perfectly synchronized lip movements that look completely natural.
🎬 Perfect For Every Use Case
From content creation to education, marketing to entertainment - add realistic speech to any video
Content Creation
Add realistic speech to your videos for TikTok, Instagram, YouTube, and more
Marketing & Ads
Create compelling product demos, promotional videos, and brand content with speech
Education & Training
Add voiceovers to educational content, tutorials, and training materials
Entertainment
Create engaging videos with synchronized speech for entertainment and creative content
💬 What Our Users Say
Join thousands of satisfied creators who trust Posternity Lip Sync
"The lip sync quality is incredible! I use it for all my TikTok videos now. The voices sound so natural."
Sarah Chen
Content Creator"Perfect for our marketing videos! The synchronization is spot-on and the processing is lightning fast."
Mike Rodriguez
Marketing Director"As an educator, this tool has revolutionized how I create video content. The voice quality is exceptional."
Dr. Emily Watson
Online EducatorReady to Create Amazing Audio-Visual Content?
Join thousands of creators who are already using AI Audio to enhance their content.