Agent SkillsZJU-REAL/Easel › beat-sync-video

beat-sync-video

GitHub

基于librosa检测音乐节拍,驱动图片/视频在节拍点硬切并添加特效,生成燃系卡点短视频。

skills/openclaw/beat-sync-video/SKILL.md ZJU-REAL/Easel

Trigger Scenarios

卡点视频 踩点视频 音乐卡点 节奏卡点

Install

npx skills add ZJU-REAL/Easel --skill beat-sync-video -g -y
More Options

Non-standard path

npx skills add https://github.com/ZJU-REAL/Easel/tree/main/skills/openclaw/beat-sync-video -g -y

Use without installing

npx skills use ZJU-REAL/Easel@beat-sync-video

指定 Agent (Claude Code)

npx skills add ZJU-REAL/Easel --skill beat-sync-video -a claude-code -g -y

安装 repo 全部 skill

npx skills add ZJU-REAL/Easel --all -g -y

预览 repo 内 skill

npx skills add ZJU-REAL/Easel --list

SKILL.md

Frontmatter
{
    "name": "beat-sync-video",
    "layer": "produce",
    "description": "音乐卡点视频 \/ 踩点视频:检测背景音乐的节拍,让图片或片段在节拍点上切换,配推进\/白闪特效,做出燃系'卡点'短视频。当用户说 卡点视频、踩点视频、音乐卡点、节奏卡点、按音乐切换、鼓点视频、踩节奏、beat 卡点、图片卡点、卡点混剪 时使用。基于 shared\/scripts\/beatsync.py(librosa 节拍检测)。与 slideshow-video 区别:slideshow 每图固定时长、柔和转场,本 SKILL 切换点由音乐节拍决定、硬切踩点带特效。"
}

音乐卡点视频(踩点混剪)

用 librosa 检测背景音乐节拍,让画面在节拍上硬切换,配节拍特效,做"踩点"燃系短视频。 全部走 skills/shared/scripts/beatsync.py不要手数节拍、手拼滤镜——脚本已做 节拍检测、区间切分、素材循环、音画对齐。

每图固定时长的柔和相册见 slideshow-video;主题→AI 配图配音成片见 auto-short-video

输入

字段 必填 说明
背景音乐 决定卡点的音乐文件(节奏越强效果越好;没给就问)
素材 一组图片和/或短片段(按顺序,循环使用),或一个目录
画幅 用户或上游任务未明确横版/竖版(或具体分辨率)时,制作前必须追问并等确认;不得按平台、Profile 或默认值静默推断,已明确则不重复问
切换频率 每几拍切一次(默认每 2 拍)
特效 zoom 推进(默认)/ flash 白闪 / none

输出(outputs/主题名/

  • 卡点成片(*.mp4
  • 报告:卡点段数、总时长、检测到的 BPM、特效

执行步骤

脚本路径(相对项目根):skills/shared/scripts/beatsync.pybuild -h / beats -h)。

1.(可选)先看节拍

python skills/shared/scripts/beatsync.py beats --music <音乐>
# 打印 tempo(BPM) 与节拍时间点,用于判断 --every 该设多少

2. 生成卡点视频

python skills/shared/scripts/beatsync.py build \
  -i 1.jpg 2.jpg 3.jpg 4.jpg --music <音乐> \
  -o outputs/主题名/show.mp4 \
  --size 1080x1920 --every 2 --effect zoom
  • 素材 = 图片或短片段,数量可少于卡点段数(自动循环复用)。
  • --every 1 每拍都切(快闪,素材要多);--every 4 每小节切一次(舒缓)。
  • --effect flash 段首白闪更"燃";--effect none 干净硬切。
  • --max-duration 15 限制成片长度(如做 15s 抖音)。
  • 也可 --images-dir <目录> 批量喂素材(按文件名排序)。

Profile 感知

  • 有 Profile:platforms.md 只用于给出画幅建议,仍须用户确认;卡点风格(快闪/舒缓)与特效贴合账号调性 (潮流/运动账号偏快闪 flash,生活/治愈账号偏 zoom 舒缓)。
  • 无 Profile:先确认横版/竖版;默认每 2 拍、zoom 特效。

规则

  1. 音乐节奏越明确卡点越准;无明显节拍时脚本自动退化为等间隔切换并在报告说明。
  2. 卡点用硬切(不加转场),否则会糊掉节拍感——这是刻意设计。
  3. 素材不足自动循环;素材充足时建议 --every 1~2 让每段都换新画面。
  4. 成片默认跟音乐等长,用 --max-duration 卡平台时长。
  5. 产物统一进 outputs/主题名/

参考来源

节拍检测用 librosa beat_track(onset 强度 + 动态规划求拍点),画面在拍点硬切是卡点混剪的 标准做法。把节拍→区间→逐段渲染→音画对齐封装成确定性脚本,避免手数拍子对不齐。

Version History

  • 69c5928 Current 2026-09-08 17:36

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Metadata

Files
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Version
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Hash
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Indexed
2026-09-08 17:36

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