Picture track01
Action and camera share one timeline
State who does what, how the camera approaches or follows, and where the shot ends.
Seedance 1.5 Pro
Direct the picture, performance and sound as one complete scene.
Seedance / Audio-visual take
Not video first, sound later
Seedance 1.5 Pro is ByteDance Seed's native joint picture-and-sound model. It understands visuals, dialogue, ambience and music together so lip movement, delivery, action and camera rhythm can serve one scene instead of adding sound after a silent video.
Native picture + soundCinematic cameraMultilingual dialogueCoherent storytelling
One shared timeline
Why synchronized sound changes the way you prompt
Seedance 1.5 Pro treats visuals, speech and scene sound as one performance. A stronger brief places every action and sound cue on the same timeline instead of describing them in separate blocks.
Voice track02
Speaker, line and emotion stay connected
Place dialogue after its speaker, then name the language, delivery and performance during the line.
World track03
Ambience, effects and music build the world
Use sounds that belong in the scene and tie each important cue to a visible action.
Best scenes
Where Seedance 1.5 Pro earns its place
Choose it when sound is part of the story—not an afterthought—and the scene depends on dialogue, performance, atmosphere or a precise camera beat.
Dialogue-led short scenes
Stage a compact exchange with named speakers, expressive delivery, matching facial performance and scene ambience.
Narrated product stories
Combine a clear product reveal with voiceover, material sounds and camera moves for ads, launches and ecommerce.
Cinematic action moments
Direct fast movement, tracking shots and impact sounds together so pace and physical energy feel connected.
Stylized social storytelling
Create anime, comedy, game-like or cultural scenes where language, accent, music and visual style carry the idea.
Editable prompts
Prompt templates written like a shooting brief
Replace the bracketed details. Keep the order—scene, performance, camera, dialogue, sound and ending—so every instruction belongs to a moment viewers can see or hear.
Short drama or character sceneReplace the brackets
Two-person dialogue beat
In [specific location and time], [character A] is [visible action] while [character B] approaches. Begin with a [shot size], then slowly [camera move] as A says in [language and tone], ‘[exact line].’ B pauses, [facial response], and replies, ‘[exact line].’ Layer [ambient sound] under the dialogue, let [one sound cue] land on [specific action], and end on [clear final image]. [Visual style and lighting].
Brand and ecommerce adReplace the brackets
Product reveal with narration
A cinematic product film for [product] in [setting]. Start on an extreme close-up of [recognizable detail] with [material sound]. The camera [movement] to reveal the full product as [visible product action] happens. A [voice description] narrator says, ‘[short benefit-led line].’ Add [ambient sound or restrained music], synchronize [sound cue] with [visual moment], and finish on a steady [pack shot or use scene] with clean space for [headline or logo].
Sport, game or social hookReplace the brackets
High-energy action moment
[Subject] moves through [environment] and performs [one precise action]. Follow from a [camera angle] in a continuous [camera path], then cut to a brief slow-motion close-up at [impact moment]. Use [wind, footstep, engine or impact sounds] synchronized to the movement, with [music style] rising toward the key action. Keep [identity or costume detail] consistent and end as [subject] reaches [clear endpoint].
Direct, review, simplify
Direct one complete beat at a time
Write the prompt as a compact shooting brief: define one dramatic beat, order the subject, action and camera, attach every line and sound to its moment, then review synchronization and story before visual polish.
Content is distilled from ByteDance Seed's official materials. Visual examples are selected from Flux Art's Seedance generation library to illustrate each creative concept; results vary by prompt and source material.
Create with Seedance 1.5 Pro- 01
Define the dramatic beat
Start with one visible change: a reveal, reply, turn, impact or emotional decision that the whole shot builds toward.
- 02
Place picture and sound together
Describe subject, action and camera in order, then attach each line, effect or music cue to the moment when it should be heard.
- 03
Review synchronization before polish
First check speech, movement and sound timing. If the result drifts, simplify one layer before adding more style or detail.
Compare related AI video models
- Seedance 2.0High-quality motion for product videos and story shots.
- Seedance 2.0 FastThe accelerated Seedance route for faster video drafts, comparisons and creative decisions.
- Seedance 2.0 MiniA lighter Seedance workflow for fast drafts, social clips and high-frequency creative testing.
- HappyHorse 1.1Upgraded cinematic video generation for smoother motion, consistent subjects and audio-aware clips.
Seedance 1.5 Pro FAQ
What is Seedance 1.5 Pro?
Seedance 1.5 Pro is a synchronized picture-and-sound AI video model from ByteDance Seed. It can organize dialogue, ambience, sound effects and music alongside character performance and camera direction to create a complete scene.
How is Seedance 1.5 Pro different from a regular AI video model?
Its main difference is that picture and sound are considered in the same creation. You do not have to generate a silent clip first and separately assemble dialogue, ambience and music, which makes it useful when sound is part of the story.
What kinds of videos are best suited to Seedance 1.5 Pro?
It suits dialogue-led short scenes, character moments, product ads, narrated brand films, cinematic action shots and stylized social videos. It is especially worth trying when sound, performance or timing is central to the idea.
What kinds of sound can Seedance 1.5 Pro create?
You can describe character dialogue, narration, ambience, action sound effects and background music in the same scene. Keep only the sounds that move the scene forward so several competing audio cues do not make the result unclear.
Can Seedance 1.5 Pro synchronize dialogue with lip movement?
Seedance 1.5 Pro is designed to coordinate spoken lines with facial expression and lip movement. Short, specific lines with a clearly identified speaker and natural tone usually produce steadier results, but the final synchronization should still be reviewed.
Does Seedance 1.5 Pro support dialogue in different languages?
Yes, it supports multilingual dialogue creation. State the language, speaker, voice quality and exact line clearly, such as: a young woman says softly in natural Mandarin, ‘[your line].’
Can I create a video from text or an image?
Yes. You can describe a new scene with text or guide the video with a first frame or first-and-last frames. Text is useful for open-ended scenes, while images help preserve a character, product, composition or visual style.
What should a Seedance 1.5 Pro prompt include?
Write the scene in this order: setting, character, action, camera, dialogue, sound and ending. Each instruction should belong to a specific moment viewers can see or hear instead of relying only on broad words such as cinematic or impressive.
How can I make character dialogue sound more natural?
Name the speaker, language and tone, then put the exact line in quotation marks. Start with short sentences and avoid overlapping speakers; add pauses, emotional changes or a second speaker after the basic performance is stable.
How do I make a sound happen at the right moment?
Attach the sound to a visible action, such as: a clear clink is heard when the cup touches the table. This is easier to follow than collecting every sound instruction at the end of the prompt.
Should one video prompt describe a full story or a single moment?
Start with one complete dramatic beat, such as a reveal, reply, turn or impact. A focused scene makes it easier to keep character performance, camera movement and sound timing coherent.
How can I keep the same character or product consistent?
Use a clear, stable reference image and repeat the most important identity, clothing or product details in each prompt. For a series, change one major variable at a time instead of changing the subject, style and action together.
What should I do if the first result is not right?
Identify whether the problem is the picture, dialogue, sound or camera, then simplify only that layer. Shorten the dialogue, reduce the action or keep one main sound cue, check synchronization first and add visual polish afterward.
Can I try Seedance 1.5 Pro for free and use the result commercially?
Flux Art lets registered users start free, with current credit limits and subscription options shown on the pricing page. Generated videos can support product, advertising and social content, but review the current terms and the rights to any reference images, likenesses, brands or music before publishing.