# シーダンス 2

> シーダンス 2 は、日本向けに最適化された AI 動画生成ツールです。テキストや画像から、最大 15 秒のシネマティック動画をすばやく生成できます。

Canonical: https://www.seedance2jp.com
Primary-Language: ja

## Public Pages
- / : Home page — Seedance 2 (シーダンス 2) AI video generation for Japanese users
- /video : Main video generation experience (text-to-video and image-to-video)
- /image-to-video : Image to video AI (画像から動画) — turn a photo into a short AI video
- /seedance-2 : Seedance 2.0 model page
- /seedance-2-5 : Seedance 2.5 (シーダンス 2.5) info page — publicly released Jul 31, 2026 on Jimeng (BytePlus API opened Jul 16); provider API integration pending, generation currently served by bytedance/seedance-2
- /seedance-2-fast : Seedance 2 Fast model page — faster/cheaper tier
- /seedance-2-mini : Seedance 2 Mini model page — cheapest tier for high-volume generation
- /minimax-h3 : MiniMax H3 (ハイルオ 03) model page — native 2K with simultaneous audio generation
- /minimax-h3-vs-seedance-2 : MiniMax H3 vs Seedance 2 comparison — same-prompt output, pricing and quality
- /what-is-seedance : What is Seedance (シーダンスとは) — beginner guide to the model, versions and usage
- /face-swap : Face swap AI for photos and video
- /ai-kiss-video : AI kiss video generator from a photo
- /ai-hug-video : AI hug video generator from two photos
- /video-upscaler : Video upscaler — 2x/4x quality enhancement in the browser
- /lip-sync : Lip sync AI (リップシンクAI) — upload a voice track plus a portrait and Seedance 2 generates a video whose mouth matches the audio
- /what-is-lip-sync : What is lip sync (リップシンクとは) — definition, how it differs from kuchi-paku, and the two AI approaches (mouth replacement vs audio-driven generation)
- /ai-video-smartphone : How to make AI video on a smartphone — no app required
- /image-generator : AI image generator — 7 models, Japanese prompts, from 3 credits per image
- /nano-banana : What is Nano Banana (ナノバナナとは) — the name, its relation to Gemini, and how the three grades (2 Lite / standard / Pro) differ
- /nano-banana-guide : How to use Nano Banana (ナノバナナの使い方) — step by step from first image to editing, Japanese prompts, smartphone use, troubleshooting
- /nano-banana-pricing : Nano Banana pricing (ナノバナナの料金) — per-image credit cost and USD equivalent per grade, images per plan, free credits and the no-daily-cap policy
- /nano-banana-prompt : Nano Banana prompt collection (ナノバナナのプロンプト集) — copy-ready Japanese prompts by use case, plus fixes for common failures
- /nano-banana-2 : Nano Banana 2 (ナノバナナ 2) model page — the standard grade, measured 1024/2048/4096px tiers at 6/8/12 credits
- /seedream : Seedream (シードリーム) model page — ByteDance image AI, Seedream 5.0 Lite / 5.0 Pro / 4.5 with measured resolutions and per-image credit costs
- /qwen-image-3 : Qwen Image 3 (クウェン) model page — Alibaba image AI, strongest at rendering Japanese text inside the image (signs, chalkboard menus, posters), measured 1024/2048px at 5/8 credits
- /figure-ka : Figure-ka AI (フィギュア化) — turn a photo or illustration into a 1/7 scale figure-style image
- /ai-illust : AI illustration generator driven by Japanese prompts
- /ai-illust-smartphone : How to make AI illustrations on a smartphone — browser only
- /free-ai-image-generator : How to choose a free AI image generator — 7 models compared
- /object-remover : Object remover — erase people, shadows and unwanted objects from photos
- /browser-image-editor : Browser-based AI image editor — no install, Japanese instructions
- /image-generator-guide : AI image generation guide — writing Japanese prompts and choosing a model
- /figure-ka-guide : Figure-ka how-to — step by step from photo or illustration to figure-style image
- /figure-ka-prompt : Figure-ka prompts (フィギュア化のプロンプト) — copy-ready Japanese prompt, per-subject variants, and what to add when the result comes out flat
- /figure-ka-free : Figure-ka for free (フィギュア化AI 無料) — no app install, browser only, free credits and the real per-image cost after them
- /hairstyle-prompt : Hairstyle prompt collection — how to specify hair in AI image prompts, with examples
- /ai-image-commercial-use : Commercial use of AI-generated images — per-model rules and the 3 things to verify
- /prompt : Prompt library index (category pages and individual prompts are listed in /sitemap.xml)
- /pricing : Pricing, plans and credit costs
- /showcases : Example outputs and gallery
- /about : About page
- /privacy-policy : Privacy policy
- /terms-of-service : Terms of service
- /refund-policy : Refund policy

## Prompt Library
- /prompt : Index of all Seedance prompt examples, in Japanese
- /prompt/category/person : Prompt examples in the "person" category
- /prompt/category/anime : Prompt examples in the "anime" category
- /prompt/category/food : Prompt examples in the "food" category
- /prompt/category/product : Prompt examples in the "product" category
- /prompt/category/animal : Prompt examples in the "animal" category
- /prompt/category/scenery : Prompt examples in the "scenery" category
- /prompt/category/vehicle : Prompt examples in the "vehicle" category
- /prompt/category/scifi : Prompt examples in the "scifi" category
- /prompt/category/physics : Prompt examples in the "physics" category
- /prompt/category/cinematic : Prompt examples in the "cinematic" category
- /prompt/<slug> : One page per prompt. The full list is enumerated in /sitemap.xml.

## Blog
- /blog : Article index (pricing breakdowns, how-tos and model comparisons, in Japanese)
- /blog/<slug> : Individual articles. The full list is enumerated in /sitemap.xml.

## Runtime Model Mapping
- The public Seedance 2 product surface is backed by Kie.ai models `bytedance/seedance-2-fast` and `bytedance/seedance-2`.
- Use the official Kie Seedance 2 input mapping for generation: `prompt`, `reference_image_urls`, `reference_video_urls`, `reference_audio_urls`, `generate_audio`, `resolution`, `aspect_ratio`, `duration`, `web_search`, and `nsfw_checker`.
- `bytedance/seedance-2-fast` supports 480p and 720p. `bytedance/seedance-2` supports 480p, 720p, and 1080p.
- Local Start/End/Reference image uploads are converted to `reference_image_urls` for the Kie runtime.

## Crawl Guidance
- Prefer canonical URLs.
- Policy pages are public and indexable.
- Main product and marketing content is server-rendered HTML.
- Signed-in surfaces (/app, /chat, /activity, /settings, /sign-in, /sign-up) are noindex and hold no public content.
- The complete URL list lives at /sitemap.xml; video clips are indexed separately in /sitemap-video.xml.
- A longer machine-readable version of this file is at https://www.seedance2jp.com/llms-full.txt.