Seedance 4.0 AI Video Generator
Seedance 4.0 turns a prompt, a still image, or a short reference clip into a 1080p shot with the sound already in the file. Faces stay consistent across cuts, and the camera moves the way your prompt describes. Seedance 4.0 handles vertical posts, ad variations, hosted shows, music edits, and rough pre-viz.
Why Seedance 4.0 Is Different
Six pieces of Seedance 4.0 worth knowing about before you open the editor.
Multimodal Input
Most video tools lock you into a single input. Seedance 4.0 reads four: a prompt, a photo, a reference clip, and audio. Use one or combine them in Seedance 4.0. A common setup is a hero image for the look, one line of text for the action, and a track to set the rhythm.
Audio And Picture Together
Older video generators treated sound as a second step: render first, add audio later, then resync it somewhere else. Seedance 4.0 makes both in one pass. Foley, ambient layers, dialog timing, and music sync all get produced alongside the frames, so each Seedance 4.0 scene gets whatever audio it needs.
Identity Holds
Faces in older AI video tend to drift. A couple of seconds in, the wardrobe changes; a moment later, a different actor seems to take over. Seedance 4.0 locks facial structure, hair, eye color, and small details like the watch on a wrist, so multi shot scenes in Seedance 4.0 finally hold together.
Cinematic Vocabulary
Camera terms map to real moves: push in, rack focus, crash zoom, static wide, slow orbit. Seedance 4.0 reads the language a director uses on set and turns it into motion paths. Chain several together and Seedance 4.0 runs them in the order you wrote.
Scenes Across Cuts
Single shots are easy. Holding a scene together across a hard cut is the harder problem. Lighting, blocking, wardrobe, and background characters carry from one shot to the next in Seedance 4.0, so a 10 second clip can hold three shots that read like one piece of film.
Output Specs
Seedance 4.0 outputs native 1080p at five or ten seconds. The trade-off is deliberate: a short clip that's finished beats a long one that isn't. There's also a 480p preview mode that renders faster, useful for checking a storyboard before you commit to a full quality pass.
Ways to Work With Seedance 4.0
Four entry points into Seedance 4.0. Most jobs touch more than one.
Text Prompt
Open the editor and type the shot you want, like a neon-lit ramen shop with steam rising over the bar. The prompt runs and Seedance 4.0 returns the clip at 1080p with sound inside the file. You skip the camera, the cast, and the soundstage; it all happens server side.
Image Drop
If you have a still that already nails the mood, use it as the visual reference for Seedance 4.0. The image becomes the starting frame and motion grows from there, keeping the color grade, lighting, and composition. It's a good way to add movement to a still you already like.
Reference Clip
Found a short clip with the motion or pacing you want? Upload it alongside your scene description, and Seedance 4.0 lifts the movement from the reference and applies it to your new visual. With Seedance 4.0 you don't have to choreograph or storyboard the action from scratch.
Source Footage Edit
Old clip, new pass. Send Seedance 4.0 the source and describe the change: extend it by four seconds, drop a night skyline into the background, or remove a boom mic at the top of the frame. Anything you don't flag keeps its original frames.
How A Project Runs
Three steps. Most jobs loop the last two a few times before export.
Pick A Source
Three boxes on the home screen: a prompt, an image upload, and a video upload. Audio is optional and rides on top. Plain English handles the rest, with no syntax or special tokens to learn. A sentence and a file picker are all Seedance 4.0 needs.
Run The Job
Hit generate and Seedance 4.0 queues the render on its GPU pool. A 5 second Seedance 4.0 job usually finishes inside a minute; 10 seconds takes a little longer. Your browser tab sends a notification when the clip is ready, so you don't have to sit and watch the wait.
Iterate, Then Export
Watch it back and type what to fix, whether that's tighter framing, a slower pace, or a different wardrobe color. Each pass costs less than the first because Seedance 4.0 patches the clip instead of starting over. Hit export when the cut works and the MP4 lands in your downloads.
Real Use Cases
Six places Seedance 4.0 keeps showing up in actual production work.
Vertical Content Calendar
Creators run out of ideas before they run out of week. Sketch seven hooks, push them through Seedance 4.0 in vertical format, and each comes back at 5 or 10 seconds with audio. Drop the batch into your scheduler and the branding stays consistent.
Campaign Testing
Winning ad creative rarely comes from the first cut. One approved brief becomes ten Seedance 4.0 variations in an afternoon, each with a different end card, headline, or plate. Plug them into the ad set and let the spend data pick the winner.
Catalog Video
Shops with many items usually end up with mismatched clip styles. Set the look once in Seedance 4.0 and every listing matches: spin the item, push in on the texture, show it in use. Render from your product stills and swap onto the page.
Avatar Hosts
Course channels, news shows, and explainers hit the same wall: a real host costs days per episode. Set up a Seedance 4.0 avatar once and feed it a script per drop. The face holds and the voice tracks lip sync, so no recording studio needed.
Audio Driven Cuts
Editing to a track by hand takes an hour of dropping markers and dragging clips. Hand the audio to Seedance 4.0 and the cuts land on the beat, with drops and choruses on rhythm. Manual work stays for parts that need judgment.
Pre-viz Drafts
Pitching a director or client with paper boards is rough, since most people can't read a storyboard. Run each panel through Seedance 4.0 for a five second moving version, then stitch them in any editor. A Seedance 4.0 pre-viz lands harder than stills.
Seedance 4.0 FAQ
Quick answers about the model and the product. Did not see your question? Email [email protected].
What exactly is Seedance 4.0?
ByteDance Seed's video model. Seedance 4.0 turns text, an image, a video, or audio into finished short clips with built-in sound, locked characters, and real camera control.
Does it actually generate sound?
Yes. Seedance 4.0 makes audio in the same pass, not bolted on after. Foley is believable, voice tracks lip movement, and songs line up the cuts. No second tool needed.
Will the same character stay the same across cuts?
Yes, a big upgrade. A Seedance 4.0 character keeps their face, hair, clothes, even props across shots, so a three shot sequence reads as one person.
What inputs does Seedance 4.0 take?
Four kinds: text, an image, a video reference, or audio. Mix them freely, like an image with a one line prompt, or a clip with a music track.
How well does it follow prompts?
Seedance 4.0 knows filmmaking terms. Camera moves become real motion and shot order holds, so a wide, a push-in, then an over the shoulder play in that order.
Can I edit footage I already have?
Yes. Send Seedance 4.0 the source and name the change: swap a background, recolor wardrobe, or extend the tail. Everything else keeps its original pixels.
Can I use Seedance 4.0 output commercially?
Paid plans include commercial rights for ads, campaigns, client work, and storefronts. The free tier is personal-use only, and NSFW is blocked on every plan.
Do you allow NSFW content?
No. Seedance 4.0 filters prompts at submission and catches anything that slips through on output. Repeated attempts close the account for good. See the Terms of Service.
Do I need editing experience?
No. Seedance 4.0 works through plain language chat. If you can describe a scene out loud, you can use it. No timelines, masks, or node graphs anywhere.
How do cancellation and refunds work?
Cancel your Seedance 4.0 plan in account settings, no ticket needed. Refunds are reviewed within seven days; email [email protected]. You can also pause and return later.
Start Creating With Seedance 4.0
Sign up to Seedance 4.0, drop in a prompt or an image, and your first clip lands in about a minute with sound attached. If something's off, say so in the chat and run it again. There's no install, no setup fee, and no model to pick. Cancel any time from your account.