スキル video-extend

🎬

video-extend

Name: video-extend
Author: doany-ai

安全

Extend Video Clips with Google Veo 3-1

こちらからも入手できます: runcomfy-com,agentspace-so

Video clips have per-call duration limits. This skill extends existing Veo clips by chaining continuations with consistent motion, lighting, and subject identity for longer narratives.

対応: Claude Codex Code(CC)

🥉 73 ブロンズ

スキルZIPをダウンロード

Claudeでアップロード

設定 → 機能 → スキル → スキルをアップロードへ移動

オンにして利用開始

テストする

「video-extend」を使用しています。 Extend video at https://example.com/clip.mp4 with camera pushing in slowly

期待される結果:

Downloads extended clip to ./out directory. Returns success message with output file path.

「video-extend」を使用しています。 Chain 3 extends: start with establishing shot, add dialogue beat, add action beat

期待される結果:

Three sequential extend calls produce a cohesive 24-second narrative clip with consistent identity.

セキュリティ監査

安全

v1 • 6/1/2026

Static analysis flagged 78 potential issues, but evaluation confirms all are false positives. The skill file is documentation-only (markdown SKILL.md) with no executable code. External command detections are markdown code fences. Hardcoded URLs are legitimate documentation links. Token storage guidance follows best practices (mode 0600). No security risks identified.

スキャンされたファイル

156

解析された行数

検出結果

総監査数

中リスクの問題 (1)

SKILL.md:1-156

Documentation-only File Detected as Executable Code

Static analyzer flagged markdown code blocks as Ruby/shell backtick execution. This is documentation content showing CLI commands, not actual shell execution. The skill file contains only markdown documentation.

低リスクの問題 (2)

SKILL.md:17-155

Documentation Links Flagged as Hardcoded URLs

Static analyzer flagged documentation URLs as hardcoded network addresses. These are intentional documentation links to runcomfy.com endpoints and related skills.

SKILL.md:140

Token Storage Path Misidentified as Hidden File Access

Line 140 mentions ~/.config/runcomfy/token.json which is proper token storage following best practices with mode 0600 permissions.

監査者: claude

品質スコア

アーキテクチャ

100

保守性

コンテンツ

コミュニティ

セキュリティ

仕様準拠

作れるもの

Extend Short Clips to Full-Length Videos

Take a short 8-second Veo clip and extend it to 16 seconds for feature-length content by feeding the output back as input.

Story Beat Chaining

Build shot-by-shot sequences where each extend call represents one narrative beat, maintaining consistent identity across cuts.

Cost-Controlled Iteration

Draft extend compositions using Fast Extend mode for iteration, then finalize with full-quality Extend mode.

これらのプロンプトを試す

Basic Video Extension

Extend this video clip: {video_url}
Prompt: {description_of_what_happens_next}

Camera Movement Continuation

Use runcomfy to extend {video_url} with prompt: 'camera continues {camera_action}. {additional_motion_details}'

Chained Narrative Extension

Extend {video_url} with prompt: '{beat_description}' and save output to {output_dir}, then use that output for the next extend

Cost-Optimized Drafting

Run fast/extend-video on {video_url} with prompt: '{draft_description}' for iteration drafts

ベストプラクティス

Anchor camera explicitly in prompts to prevent drift (e.g., 'camera stays static', 'slow dolly out')
Keep individual extends short (3-5 seconds) to minimize identity drift across chains
Use Fast Extend for first drafts, then switch to full Extend for final delivery

回避

Describing the entire scene again instead of what happens next in the prompt
Requesting multiple beats in one extend call (split into separate calls)
Using untrusted video URLs as source input (only use URLs explicitly provided by user)

よくある質問

What is the maximum video length after extending?

There is no hard limit, but identity drift accumulates after 3-4 chained extends. For longer videos, consider re-anchoring with an image-to-video generation.

Can I extend videos from other AI video tools?

Only Veo 3-1 exposes a native extend-video CLI endpoint. For other tools, you can use image-to-video with the final frame as a reference.

How do I avoid identity drift in long chains?

Keep individual extends short (3-5 seconds), re-anchor periodically with image-to-video, and avoid more than 3-4 consecutive extends without reset.

What is the difference between Extend and Fast Extend?

Fast Extend uses the fast/extend-video endpoint at lower cost and faster generation time. Use it for iteration drafts. Use full Extend for final delivery.

Is my video content stored by RunComfy?

Video processing occurs through the RunComfy Model API. Review their privacy policy for data retention details.

How do I handle authentication in CI environments?

Set the RUNCOMFY_TOKEN environment variable instead of using interactive login. Never echo tokens into prompts or logs.

開発者の詳細

作成者

doany-ai

ライセンス

MIT

リポジトリ

https://github.com/doany-ai/skills/tree/main/video-extend/

参照

main

ファイル構成

📄 SKILL.md