Seedance 2.5 — ByteDance’s 30-Second AI Video Generation

• URL: https://www.threads.com/share/_xEE7gXLU/
• Date Saved: 2026-08-03
• Source: Threads (@abbychi_weekly)
• Tags: ai-tools, creative-ai

Summary

ByteDance’s Seedance 2.5 can generate 30-second videos in one shot from a single reference photo + text prompt. Demonstrates a massive leap in AI video capabilities.

Key capabilities demonstrated:

• 30-second continuous generation (previously limited to shorter clips)
• Complex temporal control: time freeze, 360° camera orbit, rewind, causal resolution
• Character consistency across multiple shots from one reference photo
• Selective motion (protagonist moves while world is frozen)
• Detailed physics simulation (different fluids with different viscosity/transparency)
• Strong natural language understanding for Chinese prompts

Practical details:

• Cost: ~NT$600 (~US$20) per generation
• Available on 即夢 (China) and Dreamina (international)
• Currently limited to 720P output
• Accepts very long prompts (3000+ chars) with second-by-second instructions

Why it matters:

The comment from @vincent.chanw captures it: “This isn’t text-to-video anymore, it’s executing a director’s script.” The model handles selective motion, character consistency, camera movement, physics rewind, and causal storytelling in a single long take — capabilities that put it far ahead of Western models like Veo 3.1 for this type of narrative video.

Prompt technique:

The shared prompt is a masterclass in AI video prompting — specifying timeline by second, character consistency rules, physics constraints, period-accurate details, and explicit “forbidden elements” list. The prompt itself was likely AI-generated (per commenter @killua001: describe what you want to AI, get professional prompt, then feed to Seedance with reference photo).