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subtitles-and-text-effects

字幕与花字:为带货短视频生成 ASS/SRT 字幕与花字(大标题弹出、关键词高亮、贴纸标签、行动号召按钮),自动避开平台底部/右侧 UI 安全区,并用 ffmpeg/libass 烧录。Use when the user wants subtitles, captions, 字幕, 花字, 大字报, keyword…

Skill by xianyu110

IndexedMIT★ 97
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/xianyu110-subtitles-and-text-effects

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About

字幕与花字:为带货短视频生成 ASS/SRT 字幕与花字(大标题弹出、关键词高亮、贴纸标签、行动号召按钮),自动避开平台底部/右侧 UI 安全区,并用 ffmpeg/libass 烧录。Use when the user wants subtitles, captions, 字幕, 花字, 大字报, keyword highlight, burned-in captions, SRT/ASS files, or text overlays that don't get covered by TikTok/抖音 UI.

Use cases: design

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.

Tools
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Install scripts
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Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/subtitles-and-text-effects

What's inside

Skill name
subtitles-and-text-effects
Description
字幕与花字:为带货短视频生成 ASS/SRT 字幕与花字(大标题弹出、关键词高亮、贴纸标签、行动号召按钮),自动避开平台底部/右侧 UI 安全区,并用 ffmpeg/libass 烧录。Use when the user wants subtitles, captions, 字幕, 花字, 大字报, keyword highlight, burned-in captions, SRT/ASS files, or text overlays that don't get covered by TikTok/抖音 UI.
License
MIT
Instructions
69 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Files (2)

  • SKILL.md
  • make_subs.py · scripts/

SKILL.md (first lines)

# 字幕与花字 · Subtitles & Text Effects

一份 ASS 同时放四种样式:**Sub**(底部字幕)· **Hook**(弹出式大花字)· **Tag**(左上角贴纸)· **CTA**(行动号召按钮)。脚本:`scripts/make_subs.py`。

> Part of [ecommerce-video-skills](https://github.com/xianyu110/ecommerce-video-skills)

## 输入 Inputs

- 时间轴 JSON(`ffmpeg-auto-assemble` 自动生成 `build/timing.json`),或自己写:

```json
{"size": [1080, 1920], "cues": [
  {"start": 0.10, "end": 2.70, "text": "冰水撑不到中午?", "style": "Hook"},
  {"start": 0.15, "end": 2.60, "text": "冰水不到中午就**变温**了?", "style": "Sub"},
  {"start": 0.00, "end": 17.0, "text": "AURA 保温杯", "style": "Tag"},
  {"start": 14.2, "end": 17.0, "text": "点击下方链接 ›", "style": "CTA"}]}
```

## 标记语法 Markup

| 写法 | 效果 |
|---|---|
| `**关键词**` | 关键词换成高亮色(默认暖黄) |
| `早上装满冰块|到晚上冰块还在` | Sub:拆成两段按字数分配时间依次出现;其他样式:换行 |

## 步骤 Steps

1. 每条字幕 ≤ 14 个汉字(1080 宽 ≈ 一行),超过用 `|` 拆。
2. 每条只高亮 1 个关键词;花字 ≤ 10 字,只在钩子和关键卖点用。
3. 生成:`python scripts/make_subs.py build/timing.json -o build/subs.ass --srt build/subs.srt`
4. 烧录:`ffmpeg -i in.mp4 -vf "ass=build/subs.ass" -c:a copy out.mp4`
5. 平台若支持上传字幕文件(如 YouTube / 部分广告平台),同时交付 `.srt`。

## 安全区 Safe zones(经验值,以真机为准)

- 底部约 20%:标题文案、商品卡、购物车 → 字幕 `MarginV` 默认 26% 高度
- 右侧约 15%:点赞/评论/分享按钮 → 左右边距 70px,重要信息别贴右边
- 顶部约 8%:状态栏/搜索 → Hook 放在 13% 高度处
- 用 `python skills/platform-spec-export/scripts/export_platform.py video.mp4 --safe-preview safe.png`(在仓库根目录运行) 叠加检查

## 样式定制

编辑 `make_subs.py` 里的 `header()`:字号按画面高度比例计算(9:16 / 1:1 / 16:9 都适用),颜色为 ASS `&HAABBGGRR`。字体自动探测(Noto Sans CJK SC / 思源黑体 / 苹方 / 微软雅黑),也可 `--font "思源黑体 CN"`。

## 提示词模板 Prompt template

```text
把这段口播稿拆成短视频字幕:每条 ≤14 字,超过用 | 分段;每条最多 1 个关键词用 **加粗**;
另外为钩子镜头和最强卖点各写 1 条 ≤10 字的花字。输出 JSON cues(start/end 先留空)。口播稿:{…}
```

## 检查清单 Checklist

- [ ] 字幕不压商品主体、不进底部 20% / 右侧按钮区
- [ ] 每屏最多 2 行;关键词高亮 ≤ 1 个
- [ ] 错别字/品牌拼写检查;数字与配音一致
- [ ] 中文字体已安装(否则会出现方框)

## 常见问题与修复 Failure fixes

| 问题 | 修复 |
|---|---|
| 中文显示成方框 | 安装 CJK 字体(`apt install fonts-noto-cjk`)或 `--font` 指定已安装字体 |
| `No such filter: 'ass'` | ffmpeg 未编译 libass,换官方/发行版完整版 ffmpeg |
| 路径含冒号报错(Windows) | 用相对路径或把 `C:` 写成 `C\:`;脚本已自动转义 |
| 字幕和声音不同步 | 用真实配音时长生成 timing(`assemble.py` 已自动处理) |
| 字幕太小 | 调 `header()` 中 `sub = round(h * 0.037)` 的系数 |

From xianyu110/ecommerce-video-skills, MIT.

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Last commit (this folder)
Oct 5, 2026 (28 days ago)

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License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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subtitles-and-text-effects skill. Agent Mart. https://agentmart.dev/skills/xianyu110-subtitles-and-text-effects (last updated 2026-10-24)