Gemini Omni Video To Sticker Gif Agent Skill

by cafe3310

从视频片段裁剪缩放变速以制作GIF动态表情

3k tokens

context cost

the whole folder, loaded on every use

files

ships runnable scripts

copies elsewhere

how many repositories repackaged it

249

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/cafe3310/public-agent-skills --skill gemini-omni-video-to-sticker-gif

The instruction itself

4 sections, as written by the author

技能：gemini-omni-video-to-sticker-gif

概述

此技能专门用于将任意视频（如 MP4）转换为高品质的 GIF 动态表情包。在制作微信表情包等场景下，它提供了从“坐标校准”到“动图生成”的完整工作流。支持在截图中绘制红黄相间的像素坐标刻度（精确到 50px），帮助用户精确确定裁剪范围。

关键词: 视频转GIF, 微信表情包, 坐标定位, GIF加速, 帧定格, ffmpeg

何时使用此技能

当您想将一段视频转换成 GIF 表情包，但不确定具体的裁剪坐标时。
当您需要精确定位视频中某个主体的坐标，想生成一张带有像素尺度的预览图时。
当您需要调整 GIF 速度（如 1.5 倍速），或者想让 GIF 最后一帧定格一段时间（如定格 0.4 秒）时。

目录结构

gemini-omni-video-to-sticker-gif/
├── SKILL.md
└── scripts/
    └── video_to_gif.py   # 核心处理脚本

参数说明

脚本 video_to_gif.py 接收以下参数：

video_path (位置参数): 输入视频文件的绝对路径。
-o, --output: 输出 file 路径。如果是 --grid 模式，输出为 PNG 预览图；否则输出为 GIF 动图。
--ss: 截取起始时间（例如 2.5，单位为秒，默认为 0.0）。
-t, --duration: 截取的时长（例如 3.5，单位为秒）。
--to: 截取的结束时间（例如 6.0，单位为秒）。如果提供了 --to，会自动计算时长 duration = to - ss。
--crop: 裁剪区域。支持以下两种格式：
w:h:x:y (FFmpeg 标准格式，如 700:700:292:10)
x,y,w,h (如 292,10,700,700 或 xy292x10 wh700x700 格式)
--scale: 输出尺寸（例如 600:600，默认为 600:600）。
--speed: 播放速度倍数（例如 1.5，默认为 1.0，大于 1.0 为加速，小于 1.0 为减速）。
--freeze: 最后一帧定格时长（例如 0.4，单位为秒，默认为 0.0，即不定格）。
--grid: 启用网格模式。开启后不会生成 GIF，而是提取 --ss 时间点的一帧，并在其上叠加像素坐标刻度（红线代表 100px，黄虚线代表 50px），用于精确定位。

使用示例

1. 提取并生成带刻度的坐标参考图

如果您不确定坐标，先生成一张带有坐标网格 of 预览帧（第 2.0s 处）：

python3 <path_to_skill>/scripts/video_to_gif.py /path/to/video.mp4 --ss 2.0 --grid -o /path/to/preview_grid.png

2. 生成 1.5 倍速、无定格的表情包

根据预览图确定的坐标 x=352, y=39, w=630, h=630，截取 2.5s - 6.0s 视频段，制作 1.5 倍速表情包：

python3 <path_to_skill>/scripts/video_to_gif.py /path/to/video.mp4 --ss 2.5 --to 6.0 --crop 630:630:352:39 --speed 1.5 -o /path/to/output.gif

3. 生成 1.2 倍速、最后一帧定格 0.4 秒的表情包

python3 <path_to_skill>/scripts/video_to_gif.py /path/to/video.mp4 --ss 2.2 --to 6.2 --crop 700:700:319:10 --speed 1.2 --freeze 0.4 -o /path/to/output_freeze.gif

常见陷阱与注意事项

依赖项: 系统必须安装有 ffmpeg 和 ffprobe，并已加入环境变量。
裁剪区域越界: 填写的 x + w 或 y + h 不能超出视频原始的分辨率，否则 ffmpeg 会报错。可以使用 ffprobe 先查看视频原始分辨率，或直接参考生成的 --grid 图像的边缘刻度。
微信表情包大小限制: 微信自定义表情大小限制通常为 5MB（有些老版本限制更低）。如果生成的 GIF 太大，建议通过减小时长、调低帧率或缩放尺寸（例如从 600x600 缩小到 300x300）来控制文件大小。

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How to use it

Copy the folder

Take cafe3310/gemini-omni-video-to-sticker-gif from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

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