Seedance 1.5 Pro – AI Audio-Video Generator with Synchronized Sound
Seedance 1.5 Pro is a new AI video tool. It makes videos with sound at the same time. The sound and video match perfectly. You can make 1080p videos from text or images. It takes 30-120 seconds. That's 10 times faster than old tools.
Seedance 1.5 Pro Features
Native Audio-Video Joint Generation
Seedance 1.5 Pro makes sound and video together. It does this in one step. Old tools make them separately. Then you have to match them. Seedance 1.5 Pro matches them perfectly. The sound and video line up exactly. No lip-sync problems. Great viewing experience.
High-Precision Lip-Sync with Seedance 1.5 Pro
Seedance 1.5 Pro achieves exceptional lip-sync accuracy, matching mouth movements precisely with audio timing, tone, and performance rhythm. Whether generating dialogue, narration, or songs, Seedance 1.5 Pro ensures characters' lip movements perfectly align with spoken words across multiple languages and dialects.
Cinematic Camera Control
Seedance 1.5 Pro offers professional-grade camera movement controls including pan, tilt, zoom, tracking, and orbital movements. Direct your videos like a filmmaker with Seedance 1.5 Pro's precise lens control, creating dynamic narratives and cinematic visual effects that enhance storytelling and visual impact.
Multi-Language and Dialect Support
The model supports multiple languages and dialects with accurate lip-sync, including English, Mandarin Chinese, Japanese, Korean, Spanish, Portuguese, Indonesian, and Chinese dialects like Cantonese and Sichuanese.
Ultra-Fast Generation Speed
Leveraging sparse attention mechanisms and quantization techniques, Seedance 1.5 Pro generates videos 10x faster than traditional diffusion models. Seedance 1.5 Pro produces high-quality 1080p videos in just 30-120 seconds, dramatically reducing production time while maintaining professional standards.
Text-to-Video and Image-to-Video
Seedance 1.5 Pro supports dual input modes: generate synchronized audio-video from text descriptions or animate static images with natural motion and matching audio. Seedance 1.5 Pro handles complex scenes while maintaining high consistency across both generation modes.
How to Use Seedance 1.5 Pro
Input Your Content
Choose between text-to-video or image-to-video mode. For text-to-video, write a detailed description including scene details, characters, actions, and desired audio elements. For image-to-video, upload a high-quality image and optionally add a text prompt describing the desired motion and audio.
Configure Settings
Adjust video parameters like aspect ratio (16:9, 9:16, etc.), duration, and select your preferred language. Optionally use Seedance 1.5 Pro's cinematic camera controls to set pan, tilt, zoom, tracking, or orbital movements.
Generate and Export
Click generate and let Seedance 1.5 Pro's DB-DiT architecture process your request. It will simultaneously create synchronized audio and video content in 30-120 seconds. Preview the result with perfect lip-sync, then download your 1080p video.
Why Choose Seedance 1.5 Pro
When you're creating videos, the last thing you want is to spend hours fixing lip-sync issues or waiting for slow generation times that kill your creative momentum. Seedance 1.5 Pro solves this by generating audio and video together from the start—not as separate tracks you have to manually align later. This means you get perfectly synchronized content in 30-120 seconds, not hours. Whether you're creating content in English, Chinese, Japanese, or any of the supported languages, you can work directly in your language and your audience's language without dealing with awkward translations or mismatched audio. The DB-DiT architecture ensures that when a character speaks, their mouth moves exactly with the words—no post-processing, no manual adjustments, just professional results ready to publish. This is what makes Seedance 1.5 Pro different: instead of giving you tools to fix problems, it prevents those problems from existing in the first place, so you can focus on creating rather than correcting.
What is Seedance 1.5 Pro
Seedance 1.5 Pro is a cutting-edge AI audio-video generation model launched in December 2025. Seedance 1.5 Pro represents a breakthrough in native audio-visual joint generation technology. Unlike conventional video generators that create video and audio separately, Seedance 1.5 Pro uses its innovative Dual-Branch Diffusion Transformer (DB-DiT) architecture to simultaneously generate synchronized audio and video content, ensuring perfect alignment and immersive experiences.
How Seedance 1.5 Pro Works
Seedance 1.5 Pro's DB-DiT architecture processes audio and video through parallel branches that communicate and coordinate during generation. When you input a text prompt, Seedance 1.5 Pro interprets the description, identifies visual elements, motion patterns, and audio requirements, then generates synchronized content in a single pass. For image-to-video tasks, Seedance 1.5 Pro analyzes the static image, creates natural motion sequences, and generates matching audio that complements the visual movement. This unified approach ensures that Seedance 1.5 Pro produces content where audio and video are inherently synchronized from creation.
Seedance 1.5 Pro DB-DiT Architecture
The Dual-Branch Diffusion Transformer architecture is Seedance 1.5 Pro's core innovation. This architecture features two parallel processing branches—one for video generation and one for audio generation—that share information and maintain temporal alignment throughout the diffusion process. Seedance 1.5 Pro's DB-DiT ensures that every frame of video corresponds precisely with the audio timeline, eliminating the need for post-processing synchronization. This technical advancement makes Seedance 1.5 Pro uniquely capable of producing naturally synchronized audio-video content.
Chinese Language Optimization in Seedance 1.5 Pro
Seedance 1.5 Pro features native understanding of Chinese language and cultural context. Seedance 1.5 Pro excels at interpreting Chinese prompts, generating content that aligns with Asian aesthetic preferences, and producing accurate lip-sync for Chinese speech. This makes Seedance 1.5 Pro particularly valuable for Chinese content creators and businesses targeting Chinese-speaking audiences.
Use Cases for Seedance 1.5 Pro
Filmmakers use Seedance 1.5 Pro to create movie scenes with synchronized dialogue and sound effects. Marketing teams leverage Seedance 1.5 Pro to produce multilingual advertising videos with perfect voice-over synchronization. Social media creators rely on Seedance 1.5 Pro for TikTok, Instagram Reels, and YouTube Shorts content with matching audio. Game developers utilize Seedance 1.5 Pro for trailers with synchronized sound effects. Product teams use Seedance 1.5 Pro for demonstration videos with narration. Educational institutions employ Seedance 1.5 Pro to create instructional videos with synchronized explanations. With Seedance 1.5 Pro, the applications span across industries and creative needs.
Seedance 1.5 Pro FAQ
What makes Seedance 1.5 Pro different from other AI video generators?
Seedance 1.5 Pro uses a unique Dual-Branch Diffusion Transformer (DB-DiT) architecture that generates audio and video simultaneously, ensuring perfect synchronization. Unlike other tools that combine separate audio and video tracks, Seedance 1.5 Pro creates natively synchronized content with millisecond-level alignment and superior lip-sync accuracy.
How fast does Seedance 1.5 Pro generate videos?
Seedance 1.5 Pro generates videos 10 times faster than traditional diffusion models. Thanks to optimized inference with sparse attention and quantization, Seedance 1.5 Pro typically produces high-quality 1080p videos in 30-120 seconds, dramatically reducing production time compared to conventional methods.
What languages does Seedance 1.5 Pro support?
Seedance 1.5 Pro supports multiple languages including English, Chinese, Japanese, Korean, Spanish, Indonesian, and various regional dialects. Seedance 1.5 Pro excels particularly in Chinese language understanding and accurately captures speech rhythms and emotional expressions for each supported language.
What video quality does Seedance 1.5 Pro produce?
Seedance 1.5 Pro generates professional 1080p high-definition videos with smooth frame transitions and cinematic quality. Every video from Seedance 1.5 Pro maintains consistent visual standards suitable for commercial use, presentations, and professional portfolios.
Can Seedance 1.5 Pro generate videos with synchronized audio?
Yes, Seedance 1.5 Pro's core feature is native audio-video joint generation. Seedance 1.5 Pro simultaneously creates synchronized audio and video content, ensuring perfect lip-sync, accurate timing, and natural audio-visual harmony without requiring post-processing or manual synchronization.
What is cinematic camera control in Seedance 1.5 Pro?
Seedance 1.5 Pro offers professional camera movement controls including pan, tilt, zoom, tracking, and orbital movements. This allows users to direct videos like filmmakers, creating dynamic narratives and cinematic visual effects. Seedance 1.5 Pro's camera control enhances storytelling and visual impact.
Does Seedance 1.5 Pro support both text-to-video and image-to-video?
Yes, Seedance 1.5 Pro supports both text-to-video and image-to-video generation modes. You can generate synchronized audio-video from text descriptions or animate static images with natural motion and matching audio. Seedance 1.5 Pro handles complex scenes while maintaining high consistency in both modes.
How accurate is lip-sync in Seedance 1.5 Pro?
Seedance 1.5 Pro achieves high-precision lip-sync accuracy, matching mouth movements precisely with audio timing, tone, and performance rhythm. Whether generating dialogue, narration, or songs, Seedance 1.5 Pro ensures characters' lip movements perfectly align with spoken words across multiple languages.