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在 OpenClaw 中安装
/install mp4-to-gif
功能描述
Use when the user wants to convert MP4 video files to GIF format, or asks about video-to-GIF conversion with quality/size control
使用说明 (SKILL.md)
MP4 to GIF Conversion
Overview
Convert MP4 videos to high-quality GIFs using ffmpeg's two-pass palette method. The two-pass approach produces significantly better color quality than direct conversion.
When to Use
- User wants to convert MP4 (or other video) to GIF
- User needs to create GIFs from video for documentation, demos, or sharing
- User asks about reducing GIF file size or improving GIF quality
Prerequisites
- ffmpeg must be installed and available in PATH
Core Method
Two-pass palette-based conversion (always use this over single-pass):
# Pass 1: Generate optimized palette
ffmpeg -y -i \x3Cinput> -vf "fps=15,scale=480:-1:flags=lanczos,palettegen=stats_mode=diff" /tmp/palette.png
# Pass 2: Convert using palette
ffmpeg -y -i \x3Cinput> -i /tmp/palette.png -lavfi "fps=15,scale=480:-1:flags=lanczos [x]; [x][1:v] paletteuse=dither=bayer:bayer_scale=5:diff_mode=rectangle" \x3Coutput>
Quick Reference
| Parameter | Default | Effect |
|---|---|---|
fps |
15 | Frame rate — lower = smaller file, choppier motion |
scale width |
480 | Output width in px — height auto-calculated (-1) |
lanczos |
— | High-quality downscaling filter |
stats_mode=diff |
— | Palette optimized for frame differences (better for motion) |
dither=bayer |
— | Ordered dithering, good balance of quality/size |
bayer_scale |
5 | Dither strength (0-5), higher = more dithering |
diff_mode=rectangle |
— | Only update changed regions (smaller file) |
Size vs Quality Tradeoffs
| Goal | Adjust |
|---|---|
| Smaller file | Lower fps (10), smaller width (320), or trim duration |
| Smoother motion | Higher fps (24-30), but file size increases significantly |
| Better colors | Use stats_mode=full for static/slow content |
| Sharper | Increase width (640-800), costs more file size |
Bundled Scripts
Two scripts are bundled alongside this SKILL.md. Use the one matching the current platform.
Windows (PowerShell) — mp4_to_gif.ps1:
& "\x3Cthis-skill-dir>/mp4_to_gif.ps1" -InputFile \x3Cinput> # Defaults: 480px, 15fps
& "\x3Cthis-skill-dir>/mp4_to_gif.ps1" -InputFile \x3Cinput> -Width 640 -Fps 20 # Custom settings
& "\x3Cthis-skill-dir>/mp4_to_gif.ps1" -InputFile \x3Cinput> -OutputFile \x3Coutput> # Custom output name
Linux / macOS (Bash) — mp4_to_gif.sh:
bash "\x3Cthis-skill-dir>/mp4_to_gif.sh" -i \x3Cinput> # Defaults: 480px, 15fps
bash "\x3Cthis-skill-dir>/mp4_to_gif.sh" -i \x3Cinput> -w 640 -f 20 # Custom settings
bash "\x3Cthis-skill-dir>/mp4_to_gif.sh" -i \x3Cinput> -o \x3Coutput> # Custom output name
When Claude invokes this skill, resolve \x3Cthis-skill-dir> to the absolute path of the directory containing this SKILL.md.
Common Mistakes
- Single-pass conversion (
ffmpeg -i in.mp4 out.gif) — produces terrible banding and color artifacts. Always use the two-pass palette method. - Too high fps — 30fps GIFs are massive. 15fps is usually sufficient for demos.
- Too wide — 480px is good for most uses. Full 1080p GIFs are impractically large.
- Forgetting to clean up palette — Delete the temporary palette.png after conversion.
安全使用建议
This skill looks safe for local video-to-GIF conversion. Before using it, make sure ffmpeg is installed from a trusted source and choose the output path carefully because existing GIF files may be overwritten.
功能分析
Type: OpenClaw Skill
Name: mp4-to-gif
Version: 1.0.0
The skill bundle provides a legitimate utility for converting MP4 videos to high-quality GIFs using ffmpeg's two-pass palette method. The included Bash (mp4_to_gif.sh) and PowerShell (mp4_to_gif.ps1) scripts are well-structured, using standard practices for temporary file handling and parameter passing. No indicators of malicious intent, data exfiltration, or prompt injection were found.
能力评估
Purpose & Capability
The SKILL.md and bundled scripts consistently focus on MP4/video-to-GIF conversion using ffmpeg's palette workflow.
Instruction Scope
The conversion commands are user-directed and purpose-aligned, but they use ffmpeg's overwrite flag, so an existing output GIF can be replaced.
Install Mechanism
There is no install spec, but the skill requires ffmpeg to already be installed; the registry requirements do not declare that binary dependency.
Credentials
The scripts read a specified input video, create a temporary palette file, and write a specified or default GIF output; no broad file access or external data transfer is shown.
Persistence & Privilege
No credentials, privileged access, background services, startup hooks, or persistent agent state are present in the artifacts.
如何使用
- 确保已安装 OpenClaw（本地或 Docker 部署）
- 在对话框中输入安装命令：
/install mp4-to-gif - 安装完成后，直接呼叫该 Skill 的名称或使用
/mp4-to-gif触发 - 根据 Skill 的参数说明提供必要输入，即可获得结构化输出
版本历史
v1.0.0
- Initial release of the mp4-to-gif skill.
- Provides two-pass, palette-based MP4 to GIF conversion using ffmpeg for high-quality results.
- Includes scripts for Windows (PowerShell) and Linux/macOS (Bash) with customizable parameters.
- Offers detailed guidance on quality/size tradeoffs and optimal settings.
- Highlights common mistakes and best practices for video-to-GIF conversion.
元数据
常见问题
Mp4 To Gif 是什么？
Use when the user wants to convert MP4 video files to GIF format, or asks about video-to-GIF conversion with quality/size control. 它是一个面向 Claude Code / OpenClaw 的 AI Agent Skill 插件，目前累计下载 68 次。
如何安装 Mp4 To Gif？
在 OpenClaw 或 Claude Code 对话框中运行命令「/install mp4-to-gif」即可一键安装，无需额外配置。
Mp4 To Gif 是免费的吗？
是的，Mp4 To Gif 完全免费，采用 MIT-0 许可证，可自由下载、安装和使用。
Mp4 To Gif 支持哪些平台？
Mp4 To Gif 跨平台运行，可在任意部署了 OpenClaw / Claude Code 的环境中使用（cross-platform）。
谁开发了 Mp4 To Gif？
由 ZZLupus（@zzlupus）开发并维护，当前版本 v1.0.0。
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