# Generating Videos

> Generates videos using Grok. Supports text-to-video and image-to-video. AI视频生成、文生视频、图生视频。

- Skill: `yikart/generating-videos` (Agent Skill)
- Install (CLI): `npx skillmds@latest add yikart/generating-videos`
- Raw SKILL.md: https://api.skillmd.com/api/skills/yikart/generating-videos/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: yikart (https://skillmd.com/u/yikart)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/yikart/generating-videos

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# Video Generation

Generates videos using **Grok**.

## Model Selection Strategy

Use `grok-imagine-video` for video generation.

| Scenario | Use Model | Reason |
|----------|-----------|--------|
| Video 1-15s | `grok-imagine-video` | Grok supports direct 1-15s generation |
| Text-to-video | `grok-imagine-video` | Prompt-only generation |
| Image-to-video | `grok-imagine-video` | Uses one reference image |
| Video >15s | Generate multiple clips, then load `editing-videos` to concatenate | Grok max duration is 15s |

## Language Rule

Video prompts MUST follow the user's language. If the user writes in Chinese, generate Chinese prompts; if in English, generate English prompts. If the user explicitly requests a specific language, use that language.

## Grok Video Model

| Model | Speed | Quality | Max Duration | Use Case |
|-------|-------|---------|--------------|----------|
| `grok-imagine-video` | Fast | Good | 15s | Default video generation |

## Parameters

| Parameter | Values | Default | Description |
|-----------|--------|---------|-------------|
| `duration` | 1-15 | model default | Video duration in seconds |
| `resolution` | `480p`, `720p` | `720p` | Video resolution |
| `aspectRatio` | `1:1`, `16:9`, `9:16`, `4:3`, `3:4`, `3:2`, `2:3` | `9:16` | Video aspect ratio |
| `imageUrl` | URL | none | Reference image URL for image-to-video |

## Workflow

1. Call `generateVideoWithGrok` with prompt and optional parameters.
2. Poll `getGrokVideoStatus` every 30 seconds.
3. Maximum wait: 5 minutes.
4. Save completed output to draft unless the user explicitly asks for media library only.

## Prompt Structure

`[Subject & Background] + [Action] + [Style] + [Camera] + [Atmosphere] + [Audio]`

### Subject & Background

Specify the main focus and environmental context.

Examples:
- "A young woman with long black hair wearing a red dress"
- "White concrete apartment building with organic shapes and lush greenery"

### Action

Describe what the subject is doing.

Examples:
- "walks slowly towards the camera"
- "transforms from liquid to solid"

### Style

Add aesthetic direction.

Examples:
- Film noir
- Surrealism
- Cyberpunk
- 3D cartoon animation
- Cinematic documentary

### Camera

Describe movement and framing.

Examples:
- "slow dolly-in"
- "handheld tracking shot"
- "close-up with shallow depth of field"

### Atmosphere

Describe lighting, color, mood, and setting.

Examples:
- "warm sunset lighting"
- "misty morning atmosphere"
- "high contrast studio lighting"

### Audio

Include useful audio cues when relevant.

Examples:
- "soft ambient city sounds"
- "gentle piano music"
- "footsteps on wet pavement"

## Aspect Ratio Guidance

| Platform / Use | Aspect Ratio |
|----------------|--------------|
| TikTok, Reels, Shorts, mobile social video | `9:16` |
| YouTube landscape, website hero, presentation | `16:9` |
| Profile or square feed asset | `1:1` |
| Portrait-style content | `3:4` or `2:3` |
| Landscape social feed | `4:3` or `3:2` |

## Long Video Strategy

For videos longer than 15 seconds:

1. Split the video into independent 15-second-or-shorter segments.
2. Generate each segment with `generateVideoWithGrok`.
3. Poll every task until complete.
4. Load `editing-videos`.
5. Use the video editing tool to concatenate the completed segments.

Keep prompts visually consistent across segments by repeating subject, style, lighting, camera language, and environment details.