Seedances

Seedance 2.5 is an AI video generator that produces cinematic clips up to 30 seconds in a single pass. It outputs native 4K resolution (3840×2160) video with scene transitions, native audio (lip-synced dialogue, sound effects), and supports up to 50 multimodal references per job. The product is developed and hosted by Seedances, an independent platform that integrates models like Seedance, Seedream, and Nano Banana.

What is Seedance 2.5?

Seedance 2.5 is an AI video generation model accessible via the Seedances web platform that converts text prompts, images, or reference media into full-length video clips. It takes text prompts (up to 2500 characters) or uploaded images/audio/video as inputs and outputs video in resolutions up to 4K, with optional native audio. The generation happens entirely in the browser through the AI Video Studio at seedances.ai.

Key Features

• 30-second single-pass generation — Produces complete narrative clips with built-in scene transitions and pacing, no stitching required.
• Native 4K output — Generates video at full 3840×2160 resolution for production-ready deliverables.
• 50 multimodal references — Combines up to 50 inputs including product shots, character sheets, audio cues, video clips, and style guides to maintain brand consistency.
• Region-level editing — Select a specific area within a frame and regenerate only that region (e.g., fix a product label, swap background) without rebuilding the entire clip.
• Native audio and lip sync — Generates sound effects, ambient audio, and lip-synced speech alongside video; dialogue in quotes triggers mouth movement.
• AI Video Studio — Browser-based interface with credit-based billing, account authentication, generation history, and model selection (Seedance 2.0, Mini, 1.5 Pro).

Who is it for?

• Marketers — A/B test ad hooks and produce short social videos without reshoots.
• E-commerce teams — Turn product photos into lifestyle video demos.
• Agencies — Localize campaigns by editing specific regions in video instead of full re-renders.
• Content creators — Publish 30-second vertical stories for TikTok, YouTube Shorts with native audio.

What can you do with Seedance 2.5?

• Social media ads — Generate 30-second branded clips with scene transitions and lip-synced voiceovers for platforms like TikTok and YouTube Shorts.
• Product demos — Upload product photos as references and generate lifestyle video showcasing features in different contexts.
• Film pre-visualization — Create cinematic storyboards with consistent characters and environments using multimodal references.

How does Seedance 2.5 work?

1. Write a text prompt (or upload reference images/audio/video) in the AI Video Studio.
2. Attach up to 50 multimodal references (character sheets, product photos, style guides, etc.).
3. Choose settings (model, aspect ratio, duration up to 30s, quality up to 4K, audio toggle).
4. Click generate; the video renders in the browser. Preview at 720p for speed, export at higher resolutions.

Pricing

Seedance 2.5 uses a credit-based system with three subscription tiers: Basic, Pro, and Max. Credit packs are also available. Failed generations receive automatic refunds.

FAQ

What reference inputs are supported?

Images, audio files, video clips, and style guides — up to 50 total per generation job. These help maintain character consistency, brand look, and audio cues.

How is Seedance 2.5 different from Seedance 2.0?

Seedance 2.5 offers longer single-pass clips (up to 30 seconds vs. 15 seconds), native 4K output, region-level editing, and approximately 20% better prompt adherence, along with native audio and lip sync.

Does it output native 4K?

Yes, Seedance 2.5 generates video at native 3840×2160 resolution — not upscaled from a lower resolution.

How do credits work?

Each generation consumes credits based on duration, resolution, and model. Credits are included in subscription plans or can be purchased as packs. Unused credits roll over.