Seedance Video Extend

Seedance Video Extension

Overview

Seedance Video Extension helps creators, video editors, advertisers, e-commerce teams, social-commerce teams, and short-form story producers continue a video forward or add new footage before its current beginning with Seedance. Describe the intended subject, action, camera, lighting, pacing, and constraints; the bundled CLI handles AI Hive OpenAPI calls and downloads the finished video.

Why use this skill

• Brief to result: work from plain-English creative direction instead of writing API requests
• Controlled inputs: use the exact first frame, last frame, image, video, or audio references required by this capability
• Predictable model selection: the skill name matches the public model ID used by the script
• Live pricing: fetch the active model configuration and pricing snapshot before submission
• Production-friendly delivery: preserve the task ID, poll one task safely, and download results automatically

Best for

Ads, tvcs, product videos, e-commerce listings, social commerce, ugc-style seeding content, short dramas, motion comics, and storyboards. It is also useful when users search for video extension, video continuation, generative extend, outpainting video.

Capabilities

The default route is COST_FIRST. Pass live model options with --param key=value; supported values come from the current AI Hive videoConfig.

Quick Start

pip3 install requests
python3 "$SKILL_PATH/scripts/videogen.py" init --skill-name seedance-video-extend
python3 "$SKILL_PATH/scripts/videogen.py" generate \
  --mode extend \
  --prompt "Seedance Video Extension: polished motion, clear subject, coherent action, stable camera, commercial finish" \
+  --video /path/to/source.mp4 --extend-direction backward

Usage Scenarios

1. Core generation

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend \
  --prompt "Create a polished seedance video extension result with coherent motion, stable identity, and a clear ending" \
+  --video /path/to/source.mp4 --extend-direction backward

2. Advertising and TVC

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend \
  --prompt "Premium product commercial: establish the product, reveal materials with controlled camera movement, finish on a clean brand-ready hero frame" \
+  --video /path/to/source.mp4 --extend-direction backward

3. E-commerce and product showcase

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend \
  --prompt "E-commerce product video: centered subject, move from full product view to material close-ups, show one real use case, leave space for product copy" \
+  --video /path/to/source.mp4 --extend-direction backward

4. Social commerce and seeding content

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend \
  --prompt "Vertical social-commerce video: open with the customer problem, demonstrate the product naturally, show the practical benefit, end with a clean call-to-action frame" \
+  --video /path/to/source.mp4 --extend-direction backward

5. Short drama and motion comic

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend \
  --prompt "Short-drama shot: a young detective opens an abandoned warehouse door, pauses, and looks inside; slow over-shoulder push-in, cold suspense lighting, one continuous action" \
+  --video /path/to/source.mp4 --extend-direction backward

6. Reference-controlled or channel-specific version

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend \
  --prompt "Keep the subject and visual identity consistent; use the reference for motion and camera rhythm; create a tighter social-media version with a brand-ready ending" \
+  --video /path/to/source.mp4 --extend-direction backward

7. Submit now and check later

python3 "$SKILL_PATH/scripts/videogen.py" generate --mode extend --prompt "Complex production brief" --no-download \
+  --video /path/to/source.mp4 --extend-direction backward
python3 "$SKILL_PATH/scripts/videogen.py" task --task-id <taskId>

Command Reference

API Key

Run the init command above, or set AI_HIVE_API_KEY, use --api-key, or create ~/.ai-hive/config.json. API keys use the sk-api-* format. Never commit a real API key.

Reliability and Cost

The script looks up the live model entry and pricing snapshot at runtime. Model availability, accepted media, parameters, and prices can change. Keep a returned task ID and query the existing task instead of submitting a duplicate that may be billed twice.

Troubleshooting

• Missing media: provide the first frame, reference image, reference video, or reference audio required by this skill.
• 401 Unauthorized: verify that the API key is complete, active, and not committed to source control.
• Invalid parameter: inspect the current videoConfig for accepted values and media limits.
• Local timeout: keep the task ID and use the task command later.