Seedance 1.5 Pro: Cinematic Video Generation with Built-in Audio & Lip Sync

bytedance/seedance-v1.5-pro/image-to-video

Seedance 1.5 Pro generates cinematic, multilingual videos from text or images with synchronized dialogue, camera control, and seamless audio-visual storytelling for ads, dubbing, and creative short productions.

Idle

The rate is $0.012 per second for 480p without audio, $0.024 per second for 480p with audio, $0.026 per second for 720p without audio, and $0.052 per second for 720p with audio.

Introduction to Seedance 1.5 Pro

ByteDance's Seedance V1.5 Pro turns text or images into cinematic, multi-shot video with synchronized dialogue, ambience, and music, priced from $0.012/s (480p no audio) to $0.052/s (720p with audio), delivering 480p or 720p outputs at 24 FPS through native, joint audio-visual generation. Trading post-dubbing, manual lip-sync, and timeline juggling for context-aware, multi-shot coherence with cinematic camera control and multilingual dialogue, Seedance 1.5 streamlines production from days to minutes and eliminates complex masking and separate audio pipelines, built for advertising teams, content studios, localization and dubbing groups, and e-learning producers. For developers, Seedance 1.5 on RunComfy can be used both in the browser and via an HTTP API, so you don’t need to host or scale the model yourself.
Ideal for: High-Conversion Video Ads | Multilingual Product Demos and Dubbing | Cinematic Social Shorts with Precise Lip-Sync

Examples of Seedance 1.5 Pro

Seedance 1.5 Pro on X Platform

Model Overview for Seedance 1.5 Pro

Provider: ByteDance (Seed Vision Team)
Task: Text/Image to Video (Audio-Visual Joint Generation)
Max Resolution/Duration: Up to 720p, 12s
Summary: Seedance 1.5 Pro is the next-generation professional audio-visual model from the Doubao team. Unlike traditional video generators that focus solely on visual frames, Seedance 1.5 Pro supports native audio-visual joint generation, producing high-fidelity video synchronized with vocals, sound effects, and background music in a single pass. It anchors generation to your input image, locking in character identity and style, while delivering cinema-grade camera movements and lifelike emotional performances.

Seedance 1.5 Pro Key Capabilities

1. High-Precision Audio-Visual Synchronization (Millisecond Level)

Seedance 1.5 Pro achieves a breakthrough in "Sound and Picture Unity." It doesn't just add sound; it generates environment sounds (wind, footsteps), action sounds (swords clashing), and background music that perfectly match the visual rhythm. The model ensures millisecond-level alignment between visual motion and audio waveforms, eliminating the "dubbing disconnect" often seen in other models.

2. Multi-Turn Dialogue & Multilingual Lip-Sync (Including Dialects)

This model is a powerhouse for character animation. It supports multi-character dialogue with distinct voices and highly accurate lip-sync.

Language Support: Native proficiency in Mandarin Chinese, English, Japanese, Korean, Spanish, and Indonesian.
Dialect Capability: Uniquely supports specific Chinese dialects (e.g., Sichuan, Shaanxi), allowing for culturally rich and comedic content creation (e.g., a panda speaking Sichuanese).
Performance: Accurately renders speaking rhythms, pauses, and inter-character interactions.

3. Cinematic Narrative Tension & Micro-Expressions

Seedance 1.5 Pro moves beyond simple motion to complex storytelling.

Camera Control: Capable of executing pro-level camera schedules like Hitchcock zooms (dolly zoom), long-take tracking, and fast whip pans.
Emotional Depth: Captures subtle micro-expressions (e.g., a shift from anxiety to relief, a slight swallow, or widening eyes) based on the image context, delivering film-grade acting quality without "AI stiffness."

4. Image-Anchored Consistency

As an I2V model, it uses the first frame (your uploaded image) to strictly lock the character's appearance, lighting style, and composition. It extends the static image into a dynamic narrative, ensuring the subject doesn't morph or lose identity even during complex movements or long 12-second generations.

Input Parameters

Core Inputs

Parameter	Type	Default/Range	Description
prompt	string	<500 chars	Detailed description of the action, camera movement, and audio atmosphere (e.g., "speaking in English," "sound of rain").

Dimensions & Settings

Parameter	Type	Default/Range	Description
resolution	enum	480p, 720p	Output resolution. 720p provides the best texture details.
ratio	enum	Adaptive, 16:9, 9:16, 1:1, etc.	Aspect ratio. "Adaptive" automatically fits your uploaded image's dimensions.
duration	integer	4–12 (seconds)	Video length. Supports "Smart Duration" (set to -1) where the model autonomously picks the best length (4-12s) for the action.

Prompts for Seedance 1.5 Pro

To help you explore the audio-visual synchronization capabilities of Seedance 1.5 Pro, we have curated a list of high-quality examples. You can copy and paste these prompts directly into the input field to test how Seedance 1.5 Pro handles complex soundscapes, dialogue, and emotional expression.

Scenario / Capability	Prompt Example (Copy & Paste)
1. Ambient Sound	The cruise ship emits a roar as it sails on the sea, with the sounds of splashing waves and the cries of seabirds
2. Dynamic Sound Field	Close-up huge explosion sound , the sound decays significantly with time and space echoes
3. Solo Monologue	The drunkard, with his speech slurred and his logic muddled, said: I ... I want to tell you ... (hiccup)... You're my best friend . After saying that, his emotions broke down, with a tone of grievance and sobbing, and finally he shouted out in a fit of rage, They're all using me! Then he broke down and cried
4. Multi-person Conversation	The man and woman looked at each other affectionately, and the man was very unwilling and incomprehensible. With an angry voice, he said, " We clearly love each other, why can't we go to the end? " The woman turned around and left. The camera switched to a close-up of the woman's face, choking and saying, " I'm sorry " The background is the wind blowing the waves, the sound of the sea pushing against the shore ,
5. Emotional Expression	Subject: young male, furious expression (frowning, baring teeth, tense facial muscles), tense body with fists clenched, making angry noises running, with rapid breathing , rapid footsteps, heavy landing sounds . Dynamic blurred street scene background; Atmosphere: intense emotional tension, low light and high contrast tones, realistic movie-like night scene
6. Onomatopoeia (Non-verbal)	The sky is windy, the wheat ears are swaying in the air, making a rustling sound, the little girl and the puppy are playing in the field, the little girl's laughter is infectious, the camera cuts, the puppy faces the sky and barks twice
7. Film & TV Scene	The background sound is the sound of heavy rain and the sound of thunder and lightning The accompaniment is relatively tense music ; the figure in the distance in the picture says in a voice of anger mixed with the sound of rain: "Run, why don't you run?" , then the person kneeling in front of the camera says in a weak voice: "Cut the crap, shoot "; the camera cuts to the hand of the main figure in the distance, who slowly raises the gun in his hand and pulls the trigger of the empty gun
8. Advertising Scenario	Advertising style; the main character in the picture glances at the apple in her hand and then says in a gentle voice with a mature woman's tone: "Grown in the golden fruit belt at 35° north latitude, with a day-night temperature difference exceeding 15°C, grown without pollution, with delicate pulp, high nutrition, rich sweet fragrance, and extremely satisfying!"
9. Promotional Video	A promotional video of a certain city; The background music is grand and imposing ;
10. Immersive/ASMR	Headset-style sound pickup, immersive audio; a kitten slurping noodles, with clearchewing sounds
11. Music Performance	The character is immersed in a guitar performance, with the melody leaning towards sadness

Recommended Use Cases for Seedance 1.5 Pro

Global Advertising: Create multilingual product videos or marketing reels that speak directly to local audiences (e.g., Spanish for LATAM, Japanese for APAC) from a single key visual.
Film & TV Pre-viz: Generate storyboard animatics with complex camera moves and emotional acting to visualize scripts before shooting.
Social Media & Entertainment: Produce viral content featuring characters speaking in funny dialects or dialects (e.g., animated memes, virtual influencers).
Game & Anime Production: Generate dynamic cutscenes with synchronized sound effects (SFX) and high-impact visual styles.

How Seedance 1.5 Pro compares to other models

Vs Seedance 1.0 Pro:

- 1.0 Pro: Focused on the "Baseline" (Stability). It generates silent videos with good motion stability but lacks audio and dynamic tension.

- 1.5 Pro: Focuses on the "Upper Limit" (Impact). It adds native audio generation, supports complex camera moves, and delivers significantly higher visual tension and narrative expressiveness. It is slower (~60s for 5s) but produces final-quality results.

Vs Seedance 1.0 Lite:

- 1.0 Lite: Optimized for Speed (~10s generation). Best for rapid prototyping or testing prompts.

- 1.5 Pro: Optimized for Quality. Use 1.5 Pro when you need 720p resolution, lip-sync, and production-ready details.

Vs Wan 2.5 / Kling 1.6:

- While competitors offer strong video generation, Seedance 1.5 Pro stands out with its "Audio-Visual Joint Generation" architecture. It is currently the industry leader in syncing dialect-specific speech and environmental sounds directly with video generation in a single inference step.

API Integration

Developers can integrate Seedance 1.5 Pro via the RunComfy API. The endpoint supports full multimodal control, allowing you to send an image + text prompt and receive a fully rendered MP4 with audio. This is ideal for building automated content creation agents.

Note: API Endpoint for Seedance 1.5 Pro

Official resources and licensing

Official Model Card: https://arxiv.org/pdf/2512.13507
Project Page: https://seed.bytedance.com/seedance1_5_pro
License: Proprietary. Usage subject to ByteDance terms.

Explore Related Capabilities

If you want to create a video from scratch without a reference image, use the Seedance 1.5 Pro (Text-to-Video) playground.

Related Playgrounds

infinite-talk/fast

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pikaframes

Animate between two images with smooth keyframe transitions using Pikaframes.

pixverse/v5.5/image-to-video

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kling-2-1/pro/image-to-video

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Frequently Asked Questions

What is Seedance 1.5 Pro and what is it used for?

Seedance 1.5 Pro is an advanced AI video generation model designed to create cinematic video content from text prompts and optional visual inputs. It can generate visuals together with built-in dialogue, ambient sound effects, and background music, enabling cohesive audio-visual output with natural synchronization. The model is commonly used for creative storytelling, marketing videos, social media content, and other scenarios that benefit from integrated video and audio generation.

Is Seedance 1.5 Pro free or does it require paid credits?

Seedance 1.5 Pro offers limited free credits upon registration, but continued usage or high-resolution image-to-video outputs typically require purchasing credits according to the platform’s pricing policy.

What are the main features of Seedance 1.5 Pro compared to previous versions?

Seedance 1.5 Pro builds on earlier versions with improved motion coherence, higher visual fidelity, and stronger prompt adherence, while introducing native audio generation as part of the video creation process. The model can generate dialogue, ambient sound effects, and background music alongside video content, enabling more cohesive audio-visual synchronization and natural lip movement in speaking scenes.

Who should use Seedance 1.5 Pro?

Seedance 1.5 Pro is well suited for marketers, content creators, filmmakers, and designers who want to produce cinematic video content with integrated visuals and audio. It is ideal for users who need high-quality video generation with built-in dialogue, sound effects, and music, without relying on complex editing or post-production workflows.

Does Seedance 1.5 Pro support audio or just visuals?

Seedance 1.5 Pro supports both video and audio generation natively. In addition to visuals, the model can generate dialogue, ambient sound effects, and background music as part of the same video generation process. Audio and visuals are produced in a synchronized manner, enabling cohesive audio-visual output without relying on third-party post-processing tools.

Are there any limitations to Seedance 1.5 Pro?

Seedance 1.5 Pro has limits such as video length (typically 4–12 seconds), resolution up to 720p, and lack of official ByteDance documentation for a dedicated 1.5 model. Complex image-to-video transitions may require refined prompts.

How does Seedance 1.5 Pro differ from other AI video generation tools?

Seedance 1.5 Pro differentiates itself through stable subject consistency, cinematic motion control, and high visual fidelity, while also generating audio and visuals together as a unified process. Unlike many tools that focus on visuals alone, it can produce dialogue, ambient sound effects, and background music in sync with the video, resulting in more natural, cohesive audio-visual output.

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Seedance 1.5 Pro: Cinematic Video Generation with Built-in Audio & Lip Sync | RunComfy