Create a Directed Story, Not Just a Motion Test
Last verified: August 16, 2026
Built to sustain a directed audio-video narrative for up to 30 seconds, Seedance 2.5 is ByteDance Seed's next-generation joint generation model, officially presented in 2026. Its core purpose is to carry a complete scene through camera movement, performance blocking, and synchronized sound instead of stopping at a brief visual beat.
The model's official presentation highlights smoother, more consistent motion, more realistic visuals, more precise interpretation of reference-video framing and cinematic language, and stronger editing responses. ByteDance also documents white-model control and green-screen editing for broader professional production, while this page packages generation into text, image, first-to-last-frame, and reference-led paths.
Explore Seedance AI's Models
Video Controls at a Glance
These six values are the generation controls available on this page.
Clip duration
4-30 seconds
Output resolution
480p or 720p
Frame shapes
1:1, 3:4, 4:3, 9:16, 16:9, or auto
Audio output
Audio track supported
Generation paths
Text-to-video, image-to-video, first-to-last-frame, and reference-to-video
Image-to-video files
1-30 JPG, JPEG, PNG, or WebP files; up to 10 MB each
Set the Scene Before You Generate
Confirm these six choices to reduce framing errors, continuity drift, and weak audio direction.
Choose the generation path first
Start with text, images, endpoint frames, or reference-led generation so the prompt describes the correct kind of transformation.
Pair length with resolution
Select a duration from 4 to 30 seconds and choose 480p or 720p before judging how much action and detail the scene can carry.
Lock the delivery shape
Choose landscape, portrait, square, classic, or auto framing before writing camera directions so key subjects remain inside the intended composition.
Prepare image batches carefully
For image-to-video, use supported JPG, JPEG, PNG, or WebP files, keep each file within 10 MB, and remove conflicting visual directions.
Script sound with the action
Describe dialogue, ambience, music, and effects as separate cues, including exactly when each sound should enter or react to an event.
Use Web Search intentionally
Enable the page's Web Search control only when the scene depends on real-world facts; leave it off for fully fictional art direction.
Choose More Story Runway or More Keyframe Breadth
The middle column shows exactly what this page delivers; any wider creator-only allowance would be marked as "ByteDance-side headroom." The table focuses on story length, audio, framing, and input control so you can choose the right generation path.
| Feature/Spec | Seedance 2.5 | Flux 3 |
|---|---|---|
| Single-generation story window | 4-30 seconds | Up to 20 seconds |
| Selectable output resolution | 480p or 720p | HD 720p; Full HD 1080p via upscaling |
| Generated audio scope | Audio track supported | Optional native audio with multilingual dialogue, synchronized speech, effects, and ambience |
| Documented generation inputs | Text-to-video, image-to-video, and reference-to-video | Text-to-video, image-to-video, and continuation from up to 4 seconds of video and audio |
| Endpoint and keyframe control | First-to-last-frame generation mode | Start frame, end frame, or multiple ordered keyframes |
| Where these story workflows run | Use the reference-directed workflow directly on Vidofy.ai | Also usable directly on Vidofy.ai in the same workspace |
Turn the Spec Differences into a Shot Plan
When the extra story runway matters
Choose the middle-column workflow when a single scene needs more room for setup, performance, escalation, and resolution. The alternative is better framed as a compact multimodal shot engine, especially when typography, multilingual dialogue, or several ordered key moments matter more than the longest selectable take.
How to choose a control strategy
The Seedance path separates image animation, endpoint transitions, and reference-led generation into distinct modes, making the starting intent explicit. Flux 3 concentrates text, image, keyframe, and continuation capabilities inside a broader multimodal system; confirm the controls shown on its model page before planning a production around any one capability.
Choose Story Runway or Ordered-Keyframe Control
Use this quick guidance to pick the best option for your workflow.
When to choose each: Choose the Seedance workflow for longer, reference-directed audio-video stories or endpoint-controlled transitions. Choose Flux 3 when its documented keyframes, multilingual speech, typography, or continuation features better match the planned shot, then verify the options exposed for that generation.
Go from Story Brief to Directed Clip in Four Steps
Choose a mode, set the shot controls, and refine one generated sequence in four practical steps.
Step 1: Choose the production path
In Vidofy, select text-to-video, image-to-video, first-to-last-frame, or reference-to-video according to the source and control your scene needs.
Step 2: Write the scene plan
Describe the subject, ordered actions, environment, camera movement, lighting, and audio cues. Use the prompt helper when you need a more structured brief.
Step 3: Set the output controls
Choose duration, resolution, aspect ratio, and audio behavior. Add eligible images for image-to-video and enable Web Search only for fact-dependent scenes.
Step 4: Generate and inspect the take
Review motion continuity, subject consistency, framing, and audio timing, then revise the prompt or settings where the sequence loses clarity.
Frequently Asked Questions
What is Seedance 2.5 best at?
Its signature strength is up to 30-second audio-video storytelling with professional camera movement, performance blocking, and reference-aware production controls. Use it when the scene needs a setup, progression, and payoff rather than a brief loop.
Does the ByteDance 30-second video model generate audio too?
Yes. This page supports an audio track, so prompts can direct dialogue, ambience, music, and event-timed sound effects alongside the visuals.
How does first-to-last-frame video generation work here?
Choose the dedicated first-to-last-frame mode when you already know the opening and closing composition. Describe the action, timing, subject changes, and camera path that should connect those two visual states.
Can I upload multiple images for image-to-video generation?
The image-to-video path accepts 1-30 JPG, JPEG, PNG, or WebP files, with a maximum size of 10 MB per file. The prompt field accepts up to 2,048 characters, so prioritize the images' roles, ordered action, camera behavior, and sound cues.
What resolution can I select for Seedance 2.5 30-second clips?
Both 480p and 720p are selectable across durations from 4 through 30 seconds on this page. Choose 720p when visible detail matters and use 480p for faster exploratory iterations.
How can I reduce continuity drift in a longer clip?
Break the prompt into ordered beats, keep character and wardrobe descriptions consistent, and assign one main action to each beat. Avoid introducing too many new subjects, locations, props, and camera rules in the same sequence.
Can I move the generated video into an editing workflow?
Treat the result as an asset to inspect before handoff: confirm dimensions, audio behavior, and compatibility in your editor after generation. If delivery requires a specific codec or container, transcode the result in your normal post-production tool rather than assuming an export format.
Can I use generated campaign or film clips commercially?
Usage rights depend on the terms that apply to your account and distribution channel. Review those terms before publishing or delivering work, and make sure you have permission to use every image, identity, trademark, script, and audio element included in the project; this is not legal advice.
Do free generations include a watermark, and how are credits shown?
Free accounts receive watermarked outputs, while paid plans generate without a watermark. The per-generation credit cost updates live from the selected model and options, and new accounts receive 60 signup credits.