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 sound baked into the file. Faces hold across cuts. Camera moves track the words you wrote. Fits vertical posts, ad iteration, hosted shows, music edits, and quick pre-viz drafts.
Why Seedance 4.0 Is Different
Six pieces of the model worth knowing about before you open the editor.
Multimodal Input
Most video tools lock you into one input. Seedance 4.0 reads four. Prompt, photo, reference clip, audio. Use one or stack them. A common combo is a hero image as the look reference, a single line for the action, a track for rhythm.
Audio And Picture Together
Older video gen treated sound as a second step. Render, then add audio, then resync somewhere else. Seedance 4.0 generates both in one pass. Foley, ambient layers, dialog timing, music sync. Whatever the scene needs gets made next to the frames.
Identity Holds
Faces in old AI video drift. Two seconds in and the wardrobe shifts. Three seconds in and a different actor takes over. Seedance 4.0 locks facial structure, hair, eye color, even the watch on the wrist. Multi shot scenes finally feel coherent.
Cinematic Vocabulary
Camera words map to actual moves. Push in. Rack focus. Crash zoom. Static wide. Slow orbit. Terms a director uses on set get parsed by Seedance 4.0 as motion paths. Chain them together and the output runs the moves in the order you wrote.
Scenes Across Cuts
Single shots are easy. Holding a scene together across a hard cut is the actual hard problem. Lighting, blocking, wardrobe, and side characters carry from one shot into the next. A 10 second clip can fit three shots that read like part of one film.
Output Specs
Seedance 4.0 ships native 1080p. Five or ten second runtime. Built on the idea that short and finished beats long and half done. A 480p preview mode renders quicker for storyboard checks before committing to a full quality pass.
Ways to Work With Seedance 4.0
Four entry points. Most jobs touch more than one.
Text Prompt
Open the editor and type the shot. A neon-lit ramen shop with steam rising over the bar. Done. The prompt runs, the clip comes back at 1080p with sound packed inside the file. Skip the camera, the cast, the soundstage. Everything happens server side.
Image Drop
Got 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 out from there. Color grade, light direction, and composition all carry through. Good for breathing motion into stills you like.
Reference Clip
Spot a short clip whose motion or pacing fits your idea. Upload it next to your scene description. Movement lifts from the reference and gets applied to your new visual. No need to choreograph or storyboard the action from scratch.
Source Footage Edit
Old clip, new pass. Send the source, describe the change. Extend by four seconds. Drop in a city skyline at night. Remove a boom mic at the top of the frame. Anything you do not flag keeps its exact 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. Prompt. Image upload. Video upload. Audio is optional and rides on top. Plain English does the rest. No syntax, no curly braces, no special tokens. A sentence and a file picker.
Run The Job
Hit generate. Seedance 4.0 queues the render on the GPU pool. A 5 second job usually finishes inside a minute. 10 seconds takes a bit longer. Your browser tab fires a notification when the clip is ready, so the wait does not eat your attention.
Iterate, Then Export
Watch playback. Type what to fix. Tighter framing. Slower pace. Different wardrobe color. Each pass costs less than the first because the model patches rather than starts over. Hit export when the cut works. MP4 lands in downloads.
Real Use Cases
Six places Seedance 4.0 keeps showing up in actual production work.
Vertical Content Calendar
Creators run out of ideas faster than time. Sketch seven hooks for the week. Push them through Seedance 4.0 in vertical format. Each lands at 5 or 10 seconds with audio. Drop the batch into your usual scheduler. Hooks stay tight, branding stays consistent.
Campaign Testing
Winning ad creative almost never comes from the first cut. One approved brief can become ten Seedance 4.0 iterations the same afternoon. Different end card, different headline, different background plate. Plug each one into the ad set and let the spend data sort it out.
Catalog Video
Shops with more than a handful of items end up with mismatched clip styles. Render once with Seedance 4.0 and every listing matches. Spin the item, push in on the texture, demo the action. Pull the still from the database, render, swap it 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 consistent avatar once. Feed it a script per drop. Face holds. Voice ties to lip sync. A weekly show stops needing a recording studio.
Audio Driven Cuts
Editing to a track by hand means dropping markers and dragging clips around for an hour. Hand the audio to Seedance 4.0. Cuts already sit on the beat. Drops, breakdowns, and choruses each get their own rhythm. Saves the manual scrubbing for parts that actually need taste.
Pre-viz Drafts
Pitching a director or a client with paper boards is rough. Most decision makers cannot read storyboards. Run each panel through Seedance 4.0. Get a five second moving version. Stitch them in any cut software. The pitch lands harder because you are showing motion.
Seedance 4.0 FAQ
Quick answers about the model and the product. Did not see your question? Email [email protected].
Start Creating With Seedance 4.0
Sign up, drop in a prompt or an image, and your first clip lands in about a minute with sound attached. Anything off, say so in the chat and run again. No install, no setup fee, no model picking. Cancel any time from your account.