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video-outpainting

Extend video spatial canvas for aspect-ratio changes via RunComfy CLI.

31|9|Updated Apr 30, 2026
Search Tags:#comfyui#aspect ratio#runcomfy cli#uncrop#video outpainting#spatial extension#seam quality
One-click install
npx skills add https://github.com/agentspace-so/runcomfy-agent-skills --skill video-outpainting-agentspace-so
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: video-outpainting
Source: https://github.com/agentspace-so/runcomfy-agent-skills/tree/main/video-outpainting
Command: npx skills add https://github.com/agentspace-so/runcomfy-agent-skills --skill video-outpainting-agentspace-so

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill solves the problem of uncropping or changing a video's aspect ratio by extending the visual canvas while keeping the central subject and action intact.

Core Features & Use Cases

  • Prompt-shaped spatial outpainting: Extends the left/right or top/bottom regions to achieve aspect-ratio swaps such as 9:16 vertical to 16:9 horizontal.
  • Two routing paths for quality needs: Uses Wan 2-7 edit-video via the RunComfy CLI for fast prompt-driven expansion, and points to ComfyUI outpainting workflows when hero-grade seam quality is required.
  • Preserves center action framing: Encourages continuity by prompting for matching background style, lighting, depth of field, and camera distance around the added regions.
  • Use cases: TikTok/Reels to YouTube reframes, converting square to wide banners, and restoring cropped footage (with seam-quality considerations).

Quick Start

Use the video-outpainting skill to extend the canvas of your uploaded vertical clip by changing it from 9:16 to 16:9 while preserving the subject framing in the center.

Frequently Asked Questions about video-outpainting

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I change a video aspect ratio from vertical to horizontal without cropping?▼

Video outpainting extends the spatial canvas to perform uncropping and aspect-ratio changes while preserving the central action. You can convert 9:16 vertical clips to 16:9 horizontal by using prompt-driven frame expansion to fill the added regions.

Can I use RunComfy CLI for video outpainting and spatial extension?▼

Yes, RunComfy CLI access via the runcomfy command with the Wan 2-7 edit-video endpoint performs prompt-driven spatial extension. You must provide JSON input containing the video_url and a spatial-extension prompt to execute the frame expansion.

What is the best way to convert TikTok Reels to YouTube format without losing the subject?▼

The best way to convert TikTok Reels to YouTube format is prompt-shaped spatial outpainting. It preserves center action framing by matching the background style, lighting, depth of field, and camera distance around the newly added regions for visual continuity.

Does video outpainting handle seam quality for restored cropped footage?▼

Video outpainting handles seam quality for restored footage by offering two routing paths. It uses Wan 2-7 edit-video via RunComfy CLI for fast expansion and points to ComfyUI outpainting workflows when hero-grade seam quality is required.

When should I use ComfyUI outpainting workflows instead of prompt-driven frame expansion?▼

You should use ComfyUI outpainting workflows instead of prompt-driven frame expansion when hero-grade seam quality is critical. The routing guidance directs you to ComfyUI for higher-fidelity outpainting if fast prompt-driven expansion does not meet your seam standards.

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