更新

2026-02-24 16:55:29 +08:00
parent bc0fe9326a
commit 0a5a17402c
29 changed files with 879 additions and 143 deletions
--- a/Docs/BACKEND_DEV.md
+++ b/Docs/BACKEND_DEV.md
@@ -82,6 +82,9 @@ backend/
 - 标题显示模式参数：
  - `title_display_mode`: `short` / `persistent`（默认 `short`）
  - `title_duration`: 默认 `4.0`（秒），仅 `short` 模式生效
+- 片头副标题参数：
+  - `secondary_title`: 副标题文字（可选，限 20 字），仅在视频画面中显示，不参与发布标题
+  - `secondary_title_style_id` / `secondary_title_font_size` / `secondary_title_top_margin`: 副标题样式配置
 - workflow/remotion 侧需保持字段透传一致，避免前后端语义漂移。

 ---
@@ -167,7 +170,6 @@ backend/user_data/{user_uuid}/cookies/
 - `DOUYIN_LOCALE` / `DOUYIN_TIMEZONE_ID`
 - `DOUYIN_FORCE_SWIFTSHADER`
 - `DOUYIN_DEBUG_ARTIFACTS` / `DOUYIN_RECORD_VIDEO` / `DOUYIN_KEEP_SUCCESS_VIDEO`
- `DOUYIN_COOKIE` (抖音视频下载 Cookie)

 ### 支付宝
 - `ALIPAY_APP_ID` / `ALIPAY_PRIVATE_KEY_PATH` / `ALIPAY_PUBLIC_KEY_PATH`
--- a/Docs/BACKEND_README.md
+++ b/Docs/BACKEND_README.md
@@ -146,6 +146,10 @@ backend/
 - `subtitle_font_size`: 字幕字号（覆盖样式默认值）
 - `title_font_size`: 标题字号（覆盖样式默认值）
 - `title_top_margin`: 标题距顶部像素
+- `secondary_title`: 片头副标题文字（可选，限 20 字，仅视频画面显示）
+- `secondary_title_style_id`: 副标题样式 ID
+- `secondary_title_font_size`: 副标题字号
+- `secondary_title_top_margin`: 副标题距主标题间距
 - `subtitle_bottom_margin`: 字幕距底部像素
 - `enable_subtitles`: 是否启用字幕
 - `bgm_id`: 背景音乐 ID
--- a/Docs/DevLogs/Day25.md
+++ b/Docs/DevLogs/Day25.md
@@ -0,0 +1,254 @@
+## 🔧 文案提取助手修复 — 抖音链接无法提取文案 (Day 25)
+
+### 概述
+
+文案提取助手粘贴抖音链接后无法提取文案，yt-dlp 报错 `Fresh cookies are needed`，手动回退方案也因抖音页面结构变化失效。本日完成了完整修复，并清理了不再需要的 `DOUYIN_COOKIE` 配置。
+
+---
+
+## 🐛 问题诊断
+
+### 错误链路
+
+1. **yt-dlp 失败**：`ERROR: [Douyin] Fresh cookies (not necessarily logged in) are needed`
+   - yt-dlp 版本 `2025.12.08` 过旧
+   - 抖音 API `aweme/v1/web/aweme/detail/` 需要签名 cookie（`s_v_web_id` 等），即使升级 yt-dlp 到最新版 + 传入 cookie 仍无法解决，属 yt-dlp 已知问题
+2. **手动回退失败**：`Could not find RENDER_DATA in page`
+   - 旧方案通过桌面端用户主页 + `modal_id` 访问，抖音 SSR 已不再返回 `videoDetail` 数据
+3. **`.env` 中 `DOUYIN_COOKIE`**：时间戳 2024 年 12 月，早已过期
+
+---
+
+## ✅ 修复方案：移动端分享页 + 自动获取 ttwid
+
+### 核心思路
+
+放弃依赖 yt-dlp 下载抖音视频和手动维护 cookie，改为：
+
+1. 自动从 ByteDance 公共 API 获取新鲜 `ttwid`（匿名令牌，不绑定账号）
+2. 用 `ttwid` 访问移动端分享页 `m.douyin.com/share/video/{id}`
+3. 从页面内嵌 JSON 中提取 `play_addr` 播放地址并下载
+
+### 关键代码（`_download_douyin_manual` 重写）
+
+```python
+# 1. 获取新鲜 ttwid
+ttwid_resp = await client.post(
+    "https://ttwid.bytedance.com/ttwid/union/register/",
+    json={"region": "cn", "aid": 6383, "service": "www.douyin.com", ...}
+)
+ttwid = ttwid_resp.cookies.get("ttwid", "")
+
+# 2. 访问移动端分享页
+page_resp = await client.get(
+    f"https://m.douyin.com/share/video/{video_id}",
+    headers={"cookie": f"ttwid={ttwid}", ...}
+)
+
+# 3. 提取 play_addr
+addr_match = re.search(r'"play_addr":\{"uri":"([^"]+)","url_list":\["([^"]+)"', page_text)
+video_url = addr_match.group(2).replace(r"\u002F", "/")
+```
+
+### 优势
+
+- 不再依赖手动维护的 `DOUYIN_COOKIE`，ttwid 每次请求自动获取
+- 不受 yt-dlp 对抖音支持状况影响
+- 所有用户通用，不绑定特定账号
+
+---
+
+## 🧹 清理 DOUYIN_COOKIE 配置
+
+`DOUYIN_COOKIE` 仅用于文案提取，新方案不再需要，已从以下位置删除：
+
+| 文件 | 变更 |
+|------|------|
+| `backend/.env` | 删除 `DOUYIN_COOKIE` 配置项及注释 |
+| `backend/app/core/config.py` | 删除 `DOUYIN_COOKIE: str = ""` 字段定义 |
+| `backend/app/modules/tools/service.py` | 删除 yt-dlp 传 cookie 逻辑和 `_write_netscape_cookies` 辅助函数 |
+
+---
+
+## 🔤 前端文案修正
+
+将文案提取界面中的"AI 洗稿结果"改为"AI 改写结果"。
+
+| 文件 | 变更 |
+|------|------|
+| `frontend/src/features/home/ui/ScriptExtractionModal.tsx` | `AI 洗稿结果` → `AI 改写结果` |
+| `backend/app/modules/tools/service.py` | 注释中"洗稿"→"改写" |
+| `backend/app/services/glm_service.py` | docstring 中"洗稿"→"改写文案" |
+
+---
+
+## 📦 其他变更
+
+- **yt-dlp 升级**：`2025.12.08` → `2026.2.21`
+- **yt-dlp 初始化修正**：改为 `YoutubeDL(ydl_opts)` 直接传参初始化（原先空初始化后 update params 不生效）
+- **User-Agent 更新**：yt-dlp 中 `Chrome/91` → `Chrome/131`
+
+---
+
+## 涉及文件汇总
+
+### 后端修改
+
+| 文件 | 变更 |
+|------|------|
+| `backend/app/modules/tools/service.py` | 重写 `_download_douyin_manual`（移动端分享页方案）；修正 yt-dlp 初始化；清理 cookie 相关代码；注释改写 |
+| `backend/app/services/glm_service.py` | docstring "洗稿" → "改写文案" |
+| `backend/app/core/config.py` | 删除 `DOUYIN_COOKIE` 字段 |
+| `backend/.env` | 删除 `DOUYIN_COOKIE` 配置 |
+| `backend/requirements.txt` | yt-dlp 版本升级 |
+
+### 前端修改
+
+| 文件 | 变更 |
+|------|------|
+| `frontend/src/features/home/ui/ScriptExtractionModal.tsx` | "AI 洗稿结果" → "AI 改写结果" |
+
+---
+
+## ✏️ AI 智能改写 — 自定义提示词功能
+
+### 概述
+
+文案提取助手的"AI 智能改写"原先使用硬编码 prompt，用户无法定制改写风格。本次在 checkbox 右侧新增"自定义提示词"折叠区域，用户可编辑自定义 prompt，持久化到 localStorage，后端按需替换默认 prompt。
+
+### 后端修改
+
+**路由层** (`router.py`)：`extract_script_tool` 新增可选 Form 参数 `custom_prompt: Optional[str] = Form(None)`，透传给 service。
+
+**服务层** (`service.py`)：`extract_script()` 签名新增 `custom_prompt`，透传给 `glm_service.rewrite_script(script, custom_prompt)`。
+
+**AI 层** (`glm_service.py`)：`rewrite_script(self, text, custom_prompt=None)`，若 `custom_prompt` 有值则用自定义 prompt + 原文拼接，否则保持原有默认 prompt。
+
+```python
+if custom_prompt and custom_prompt.strip():
+    prompt = f"""{custom_prompt.strip()}
+
+原始文案：
+{text}"""
+else:
+    prompt = f"""请将以下视频文案进行改写。...（原有默认）"""
+```
+
+### 前端修改
+
+**Hook** (`useScriptExtraction.ts`)：
+- 新增 `customPrompt` / `showCustomPrompt` 状态
+- 初始值从 `localStorage.getItem("vigent_rewriteCustomPrompt")` 恢复
+- `customPrompt` 变化时防抖 300ms 保存到 localStorage
+- `handleExtract()` 中若 `doRewrite && customPrompt.trim()` 有值，追加 `formData.append("custom_prompt", ...)`
+- modal 重置时不清空 customPrompt（持久化偏好）
+
+**UI** (`ScriptExtractionModal.tsx`)：
+- checkbox 同行右侧新增"自定义提示词 ▼"按钮（仅 `doRewrite` 时显示）
+- 点击展开 textarea 编辑区域，底部提示"留空则使用默认提示词"
+- 取消勾选 AI 智能改写时，自定义提示词区域自动隐藏
+
+### 涉及文件
+
+| 文件 | 变更 |
+|------|------|
+| `backend/app/modules/tools/router.py` | 新增 `custom_prompt` Form 参数 |
+| `backend/app/modules/tools/service.py` | `extract_script()` 透传 `custom_prompt` |
+| `backend/app/services/glm_service.py` | `rewrite_script()` 支持自定义 prompt |
+| `frontend/.../useScriptExtraction.ts` | 新增状态、localStorage 持久化、FormData 传参 |
+| `frontend/.../ScriptExtractionModal.tsx` | UI 按钮 + 展开 textarea |
+
+### 验证
+
+- 后端 `python -m py_compile` 三个文件通过
+- 前端 `npx tsc --noEmit` 通过
+
+---
+
+## 🐛 SSR 构建修复 — localStorage is not defined
+
+### 问题
+
+`npm run build` 报错 `ReferenceError: localStorage is not defined`，因为 `useScriptExtraction.ts` 中 `useState` 的初始化函数在 SSR（Node.js）环境下也会执行，而服务端没有 `localStorage`。
+
+### 修复
+
+`useState` 初始化加 `typeof window !== "undefined"` 守卫：
+
+```typescript
+const [customPrompt, setCustomPrompt] = useState(
+    () => typeof window !== "undefined" ? localStorage.getItem(CUSTOM_PROMPT_KEY) || "" : ""
+);
+```
+
+| 文件 | 变更 |
+|------|------|
+| `frontend/.../useScriptExtraction.ts` | `useState` 初始化增加 SSR 安全守卫 |
+
+---
+
+## 🎬 片头副标题功能
+
+### 概述
+
+新增片头副标题（secondary_title），显示在主标题下方，用于补充说明或悬念引导。副标题有独立的样式配置（字体、字号、颜色等），可由 AI 同时生成，20 字限制，仅在视频画面中显示，不参与发布标题。
+
+命名约定：后端 `secondary_title`（snake_case），前端 `videoSecondaryTitle`（camelCase），用户界面"片头副标题"。
+
+---
+
+### 后端修改
+
+| 文件 | 变更 |
+|------|------|
+| `backend/app/modules/videos/schemas.py` | `GenerateRequest` 新增 4 个可选字段：`secondary_title`、`secondary_title_style_id`、`secondary_title_font_size`、`secondary_title_top_margin` |
+| `backend/app/services/glm_service.py` | AI prompt 增加副标题生成要求（不超过20字），JSON 格式新增 `secondary_title` 字段 |
+| `backend/app/modules/ai/router.py` | `GenerateMetaResponse` 增加 `secondary_title: str = ""`，endpoint 返回时取 `result.get("secondary_title", "")` |
+| `backend/app/modules/videos/workflow.py` | `use_remotion` 条件增加 `or req.secondary_title`；副标题样式解析复用 `get_style("title", ...)`；字号/间距覆盖；`prepare_style_for_remotion` 处理副标题字体；`remotion_service.render()` 传入 `secondary_title` + `secondary_title_style` |
+| `backend/app/services/remotion_service.py` | `render()` 新增 `secondary_title` 和 `secondary_title_style` 参数，构建 CLI 参数 `--secondaryTitle` 和 `--secondaryTitleStyle` |
+
+### Remotion 修改
+
+| 文件 | 变更 |
+|------|------|
+| `remotion/render.ts` | `RenderOptions` 新增 `secondaryTitle?` + `secondaryTitleStyle?`；`parseArgs()` 新增 switch case；`inputProps` 新增两个字段 |
+| `remotion/src/components/Title.tsx` | `TitleProps` 新增 `secondaryTitle?` 和 `secondaryTitleStyle?`；`AbsoluteFill` 改为 `flexDirection: 'column'` 垂直堆叠；主标题 `<h1>` 后增加副标题 `<h2>`，独立样式（默认字号 48px、字重 700），共享淡入淡出动画；副标题字体使用独立 `@font-face`（`SecondaryTitleFont`）避免与主标题冲突 |
+| `remotion/src/Video.tsx` | `VideoProps` 新增 `secondaryTitle?` + `secondaryTitleStyle?`；传递给 `<Title>` 组件；渲染条件改为 `{(title \|\| secondaryTitle) && ...}` |
+| `remotion/src/Root.tsx` | `defaultProps` 新增 `secondaryTitle: undefined` + `secondaryTitleStyle: undefined` |
+
+### 前端修改
+
+| 文件 | 变更 |
+|------|------|
+| `frontend/src/shared/lib/title.ts` | 新增 `SECONDARY_TITLE_MAX_LENGTH = 20` 和 `clampSecondaryTitle()` |
+| `frontend/src/features/home/model/useHomeController.ts` | 新增状态 `videoSecondaryTitle`、`selectedSecondaryTitleStyleId`、`secondaryTitleFontSize`、`secondaryTitleTopMargin`、`secondaryTitleSizeLocked`；新建 `secondaryTitleInput = useTitleInput({ maxLength: 20 })`（不 sync 到发布页）；`handleGenerateMeta()` 接收并填充 `secondary_title`；`handleGenerate()` 构建 payload 增加副标题字段；return 暴露所有新状态 |
+| `frontend/src/features/home/model/useHomePersistence.ts` | 新增 localStorage key：`secondaryTitle`、`secondaryTitleStyle`、`secondaryTitleFontSize`、`secondaryTitleTopMargin`；对应的恢复和保存 effect |
+| `frontend/src/features/home/ui/TitleSubtitlePanel.tsx` | Props 新增副标题相关；主标题输入框下方添加"片头副标题（限制20个字）"输入框；副标题样式选择器（复用 titleStyles 预设）、字号滑块（30-100px）、间距滑块（0-100px） |
+| `frontend/src/features/home/ui/FloatingStylePreview.tsx` | 标题预览改为 flex column 布局；主标题下方增加副标题预览行，独立样式渲染 |
+| `frontend/src/features/home/ui/HomePage.tsx` | 从 `useHomeController` 解构新状态，传给 `TitleSubtitlePanel` |
+
+---
+
+## 🐛 参考音频上传 — 中文文件名 InvalidKey 修复
+
+### 问题
+
+上传中文名参考音频（如"我的声音.wav"）时，Supabase Storage 报 `InvalidKey`，因为存储路径直接使用了原始中文文件名。
+
+### 修复
+
+在 `ref_audios/service.py` 新增 `sanitize_filename()` 函数，将存储路径的文件名清洗为 ASCII 安全字符（仅 `A-Za-z0-9._-`）：
+
+- NFKD 规范化 → 丢弃非 ASCII → 非法字符替换为 `_`
+- 纯中文/emoji 清洗后为空时，使用 MD5 哈希兜底（如 `audio_e924b1193007`）
+- 文件名限长 50 字符
+- 原始中文文件名保留在 metadata 中作为展示名，前端显示不受影响
+
+```
+修复前: cbbe.../1771915755_我的声音.wav  → InvalidKey
+修复后: cbbe.../1771915755_audio_xxxxxxxx.wav → 上传成功
+```
+
+| 文件 | 变更 |
+|------|------|
+| `backend/app/modules/ref_audios/service.py` | 新增 `sanitize_filename()` 函数，上传路径使用清洗后文件名 |
--- a/Docs/FRONTEND_README.md
+++ b/Docs/FRONTEND_README.md
@@ -52,13 +52,14 @@ ViGent2 的前端界面，采用 Next.js 16 + TailwindCSS 构建。
 - **画面比例控制**: 时间轴顶部支持 `9:16 / 16:9` 输出比例选择，设置持久化并透传后端。

 ### 5. 字幕与标题 [Day 13 新增]
- **片头标题**: 可选输入，限制 15 字；支持“短暂显示 / 常驻显示”，默认短暂显示（4 秒）。
+- **片头标题**: 可选输入，限制 15 字；支持”短暂显示 / 常驻显示”，默认短暂显示（4 秒）。
+- **片头副标题**: 可选输入，限制 20 字；显示在主标题下方，用于补充说明或悬念引导；独立样式配置（字体/字号/颜色/间距），可由 AI 同时生成；仅在视频画面中显示，不参与发布标题 (Day 25)。
 - **标题同步**: 首页片头标题修改会同步到发布信息标题。
 - **逐字高亮字幕**: 卡拉OK效果，默认开启，可关闭。
 - **自动对齐**: 基于 faster-whisper 生成字级别时间戳。
- **样式预设**: 标题/字幕样式选择 + 预览 + 字号调节 (Day 16)。
+- **样式预设**: 标题/字幕/副标题样式选择 + 预览 + 字号调节 (Day 16/25)。
 - **默认样式**: 标题 90px 站酷快乐体；字幕 60px 经典黄字 + DingTalkJinBuTi (Day 17)。
- **样式持久化**: 标题/字幕样式与字号刷新保留 (Day 17)。
+- **样式持久化**: 标题/字幕/副标题样式与字号刷新保留 (Day 17/25)。

 ### 6. 背景音乐 [Day 16 新增]
 - **试听预览**: 点击试听即选中，音量滑块实时生效。
@@ -77,7 +78,8 @@ ViGent2 的前端界面，采用 Next.js 16 + TailwindCSS 构建。

 ### 8. 文案提取助手 (`ScriptExtractionModal`) [Day 15 新增]
 - **多源提取**: 支持文件拖拽上传与 URL 粘贴 (B站/抖音/TikTok)。
- **AI 洗稿**: 集成 GLM-4.7-Flash，自动改写为口播文案。
+- **AI 智能改写**: 集成 GLM-4.7-Flash，自动改写为口播文案。
+- **自定义提示词**: 可自定义改写提示词，留空使用默认；设置持久化到 localStorage (Day 25)。
 - **一键填入**: 提取结果直接填充至视频生成输入框。
 - **智能交互**: 实时进度展示，防误触设计。

--- a/Docs/task_complete.md
+++ b/Docs/task_complete.md
@@ -2,7 +2,7 @@

 **项目**: ViGent2 数字人口播视频生成系统
 **进度**: 100% (Day 25 - 支付宝付费开通会员)
-**更新时间**: 2026-02-11
+**更新时间**: 2026-02-24

 ---

@@ -10,15 +10,15 @@

 > 这里记录了每一天的核心开发内容与 milestone。

-### Day 25: 支付宝付费开通会员 (Current)
- [x] **支付宝电脑网站支付**: 集成 `python-alipay-sdk`，支持 `alipay.trade.page.pay` 跳转支付宝收银台。
- [x] **payment_token 机制**: 登录时未激活/已过期用户返回 403 + 短时效 JWT（30 分钟），安全传递身份到付费页。
- [x] **异步通知回调**: `POST /api/payment/notify` 验签 → 更新订单 → 激活用户（is_active=true, expires_at=+365天）。
- [x] **前端付费页**: `/pay` 页面，首次访问创建订单并跳转收银台，支付完成返回后轮询状态。
- [x] **is_active 安全兜底**: `deps.py` 在登录和鉴权两处均检查 is_active，到期自动停用并清理 session。
- [x] **orders 数据层**: 新增 `repositories/orders.py` + `orders` 数据库表。
- [x] **登录流程适配**: 登录接口返回 PAYMENT_REQUIRED，前端 auth.ts 处理 paymentToken 跳转。
- [x] **部署文档**: 新增 `Docs/ALIPAY_DEPLOY.md`，含密钥配置、PEM 格式、产品开通等完整指南。
+### Day 25: 文案提取修复 + 自定义提示词 + 片头副标题 (Current)
+- [x] **抖音文案提取修复**: yt-dlp Fresh cookies 报错，重写 `_download_douyin_manual` 为移动端分享页 + 自动获取 ttwid 方案。
+- [x] **清理 DOUYIN_COOKIE**: 新方案不再需要手动维护 Cookie，从 `.env`/`config.py`/`service.py` 全面删除。
+- [x] **AI 智能改写自定义提示词**: 后端 `rewrite_script()` 支持 `custom_prompt` 参数；前端 checkbox 旁新增折叠式提示词编辑区，localStorage 持久化。
+- [x] **SSR 构建修复**: `useState` 初始化 `localStorage` 访问加 `typeof window` 守卫，修复 `npm run build` 报错。
+- [x] **片头副标题**: 新增 secondary_title（后端/Remotion/前端全链路），AI 同时生成，独立样式配置，20 字限制。
+- [x] **前端文案修正**: "AI 洗稿结果"→"AI 改写结果"。
+- [x] **yt-dlp 升级**: `2025.12.08` → `2026.2.21`。
+- [x] **参考音频中文文件名修复**: `sanitize_filename()` 将存储路径清洗为 ASCII 安全字符，纯中文名哈希兜底，原始名保留为展示名。

 ### Day 24: 鉴权到期治理 + 多素材时间轴稳定性修复
 - [x] **会员到期请求时失效**: 登录与鉴权接口统一执行 `expires_at` 检查；到期后自动停用账号、清理 session，并返回“会员已到期，请续费”。
--- a/README.md
+++ b/README.md
@@ -19,14 +19,15 @@
 - 🎬 **高清唇形同步** - LatentSync 1.6 驱动，512×512 高分辨率 Latent Diffusion 模型。
 - 🎙️ **多模态配音** - 支持 **EdgeTTS** (微软超自然语音, 10 语言) 和 **CosyVoice 3.0** (3秒极速声音克隆, 9语言+18方言, 语速可调)。上传参考音频自动 Whisper 转写 + 智能截取。配音前置工作流：先生成配音 → 选素材 → 生成视频。
 - 📝 **智能字幕** - 集成 faster-whisper + Remotion，自动生成逐字高亮 (卡拉OK效果) 字幕。
- 🎨 **样式预设** - 标题/字幕样式选择 + 预览 + 字号调节，支持自定义字体库。
+- 🎨 **样式预设** - 标题/副标题/字幕样式选择 + 预览 + 字号调节，支持自定义字体库。
 - 🏷️ **标题显示模式** - 片头标题支持 `短暂显示` / `常驻显示`，默认短暂显示（4秒），用户偏好自动持久化。
+- 📌 **片头副标题** - 可选副标题显示在主标题下方，独立样式配置，AI 可同时生成，20 字限制。
 - 🖼️ **作品预览一致性** - 标题/字幕预览与 Remotion 成片统一响应式缩放和自动换行，窄屏画布也稳定显示。
 - 🎞️ **多素材多机位** - 支持多选素材 + 时间轴编辑器 (wavesurfer.js 波形可视化)，拖拽分割线调整时长、拖拽排序切换机位、按 `source_start/source_end` 截取片段。
 - 📐 **画面比例控制** - 时间轴一键切换 `9:16 / 16:9` 输出比例，生成链路全程按目标比例处理。
 - 💾 **用户偏好持久化** - 首页状态统一恢复/保存，刷新后延续上次配置。历史文案手动保存与加载。
 - 🎵 **背景音乐** - 试听 + 音量控制 + 混音，保持配音音量稳定。
- 🤖 **AI 辅助创作** - 内置 GLM-4.7-Flash，支持 B站/抖音链接文案提取、AI 洗稿、标题/标签自动生成、9 语言翻译。
+- 🤖 **AI 辅助创作** - 内置 GLM-4.7-Flash，支持 B站/抖音链接文案提取、AI 智能改写（支持自定义提示词）、标题/标签自动生成、9 语言翻译。

 ### 平台化功能
 - 📱 **全自动发布** - 支持抖音/微信视频号/B站/小红书立即发布；扫码登录 + Cookie 持久化。
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -71,11 +71,9 @@ GLM_MODEL=glm-4.7-flash
 SUPABASE_STORAGE_LOCAL_PATH=/home/rongye/ProgramFiles/Supabase/volumes/storage/stub/stub

 # =============== 抖音视频下载 Cookie ===============
-# 用于从抖音 URL 提取视频文案功能，会过期需要定期更新
-DOUYIN_COOKIE=douyin.com; device_web_cpu_core=10; device_web_memory_size=8; __ac_nonce=06760391f00b9b51264ae; __ac_signature=_02B4Z6wo00f019a5ceAAAIDAhEZR-X3jjWfWmXVAAJLXd4; ttwid=1%7C7MTKBSMsP4eOv9h5NAh8p0E-NYIud09ftNmB0mjLpWc%7C1734359327%7C8794abeabbd47447e1f56e5abc726be089f2a0344d6343b5f75f23e7b0f0028f; UIFID_TEMP=0de8750d2b188f4235dbfd208e44abbb976428f0720eb983255afefa45d39c0c6532e1d4768dd8587bf919f866ff1396912bcb2af71efee56a14a2a9f37b74010d0a0413795262f6d4afe02a032ac7ab; s_v_web_id=verify_m4r4ribr_c7krmY1z_WoeI_43po_ATpO_I4o8U1bex2D7; hevc_supported=true; home_can_add_dy_2_desktop=%220%22; dy_swidth=2560; dy_sheight=1440; stream_recommend_feed_params=%22%7B%5C%22cookie_enabled%5C%22%3Atrue%2C%5C%22screen_width%5C%22%3A2560%2C%5C%22screen_height%5C%22%3A1440%2C%5C%22browser_online%5C%22%3Atrue%2C%5C%22cpu_core_num%5C%22%3A10%2C%5C%22device_memory%5C%22%3A8%2C%5C%22downlink%5C%22%3A10%2C%5C%22effective_type%5C%22%3A%5C%224g%5C%22%2C%5C%22round_trip_time%5C%22%3A50%7D%22; strategyABtestKey=%221734359328.577%22; csrf_session_id=2f53aed9aa6974e83aa9a1014180c3a4; fpk1=U2FsdGVkX1/IpBh0qdmlKAVhGyYHgur4/VtL9AReZoeSxadXn4juKvsakahRGqjxOPytHWspYoBogyhS/V6QSw==; fpk2=0845b309c7b9b957afd9ecf775a4c21f; passport_csrf_token=d80e0c5b2fa2328219856be5ba7e671e; passport_csrf_token_default=d80e0c5b2fa2328219856be5ba7e671e; odin_tt=3c891091d2eb0f4718c1d5645bc4a0017032d4d5aa989decb729e9da2ad570918cbe5e9133dc6b145fa8c758de98efe32ff1f81aa0d611e838cc73ab08ef7d3f6adf66ab4d10e8372ddd628f94f16b8e; volume_info=%7B%22isUserMute%22%3Afalse%2C%22isMute%22%3Afalse%2C%22volume%22%3A0.5%7D; bd_ticket_guard_client_web_domain=2; FORCE_LOGIN=%7B%22videoConsumedRemainSeconds%22%3A180%7D; UIFID=0de8750d2b188f4235dbfd208e44abbb976428f0720eb983255afefa45d39c0c6532e1d4768dd8587bf919f866ff139655a3c2b735923234f371c699560c657923fd3d6c5b63ab7bb9b83423b6cb4787e2ce66a7fbc4ecb24c8570f520fe6de068bbb95115023c0c6c1b6ee31b49fb7e3996fb8349f43a3fd8b7a61cd9e18e8fe65eb6a7c13de4c0960d84e344b644725db3eb2fa6b7caf821de1b50527979f2; is_dash_user=1; biz_trace_id=b57a241f; bd_ticket_guard_client_data=eyJiZC10aWNrZXQtZ3VhcmQtdmVyc2lvbiI6MiwiYmQtdGlja2V0LWd1YXJkLWl0ZXJhdGlvbi12ZXJzaW9uIjoxLCJiZC10aWNrZXQtZ3VhcmQtcmVlLXB1YmxpYy1rZXkiOiJCTEo2R0lDalVoWW1XcHpGOFdrN0Vrc0dXcCtaUzNKY1g4NGNGY2k0TTl1TEowNjdUb21mbFU5aDdvWVBGamhNRWNRQWtKdnN1MnM3RmpTWnlJQXpHMjA9IiwiYmQtdGlja2V0LWd1YXJkLXdlYi12ZXJzaW9uIjoyfQ%3D%3D; download_guide=%221%2F20241216%2F0%22; sdk_source_info=7e276470716a68645a606960273f276364697660272927676c715a6d6069756077273f276364697660272927666d776a68605a607d71606b766c6a6b5a7666776c7571273f275e58272927666a6b766a69605a696c6061273f27636469766027292762696a6764695a7364776c6467696076273f275e5827292771273f273d33323131333c3036313632342778; bit_env=RiOY4jzzpxZoVCl6zdVSVhVRjdwHRTxqcqWdqMBZLPGjMdB4Tax1kAELHNTVAAh72KuhumewE4Lq6f0-VJ2UpJrkrhSxoPw9LUb3zQrq1OSwbeSPHkRlRgRQvO89sItdGUyq1oFr0XyRCnMYG87KSeWyc4x0czGR0o50hTDoDLG5rJVoRcdQOLvjiAegsqyytKF59sPX_QM9qffK2SqYsg0hCggURc_AI6kguDDE5DvG0bnyz1utw4z1eEnIoLrkGDqzqBZj4dOAr0BVU6ofbsS-pOQ2u2PM1dLP9FlBVBlVaqYVgHJeSLsR5k76BRTddUjTb4zEilVIEwAMJWGN4I1BxVt6fC9B5tBQpuT0lj3n3eKXCKXZsd8FrEs5_pbfDsxV-e_WMiXI2ff4qxiTC0U73sfo9OpicKICtZjdq8qsHxJuu6wVR36zvXeL2Wch5C6MzprNvkivv0l8nbh2mSgy1nabZr3dmU6NcR-Bg3Q3xTWUlR9aAUmpopC-cNuXjgLpT-Lw1AYGilSUnCvosth1Gfypq-b0MpgmdSDgTrQ%3D; gulu_source_res=eyJwX2luIjoiMDhjOGQ3ZTJiODQyNjZkZWI5Y2VkMGJiODNlNmY1ZWY0ZjMyNTE2ZmYyZjAzNDMzZjI0OWU1Y2Q1NTczNTk5NyJ9; passport_auth_mix_state=hp9bc3dgb1tm5wd8p82zawus27g0e3ue; IsDouyinActive=false

 # =============== 支付宝配置 ===============
-ALIPAY_APP_ID=********
+ALIPAY_APP_ID=2021006132600283
 ALIPAY_PRIVATE_KEY_PATH=/home/rongye/ProgramFiles/ViGent2/backend/keys/app_private_key.pem
 ALIPAY_PUBLIC_KEY_PATH=/home/rongye/ProgramFiles/ViGent2/backend/keys/alipay_public_key.pem
 ALIPAY_NOTIFY_URL=https://vigent.hbyrkj.top/api/payment/notify
--- a/backend/app/core/config.py
+++ b/backend/app/core/config.py
@@ -88,10 +88,6 @@ class Settings(BaseSettings):

    # CORS 配置 (逗号分隔的域名列表，* 表示允许所有)
    CORS_ORIGINS: str = "*"
-    
-    # 抖音 Cookie (用于视频下载功能，会过期需要定期更新)
-    DOUYIN_COOKIE: str = ""
-    
    @property
    def LATENTSYNC_DIR(self) -> Path:
        """LatentSync 目录路径 (动态计算)"""
--- a/backend/app/modules/ai/router.py
+++ b/backend/app/modules/ai/router.py
@@ -21,6 +21,7 @@ class GenerateMetaRequest(BaseModel):
 class GenerateMetaResponse(BaseModel):
    """生成标题标签响应"""
    title: str
+    secondary_title: str = ""
    tags: list[str]


@@ -66,6 +67,7 @@ async def generate_meta(req: GenerateMetaRequest):
        result = await glm_service.generate_title_tags(req.text)
        return success_response(GenerateMetaResponse(
            title=result.get("title", ""),
+            secondary_title=result.get("secondary_title", ""),
            tags=result.get("tags", [])
        ).model_dump())
    except Exception as e:
--- a/backend/app/modules/ref_audios/service.py
+++ b/backend/app/modules/ref_audios/service.py
@@ -2,9 +2,11 @@ import re
 import os
 import time
 import json
+import hashlib
 import asyncio
 import subprocess
 import tempfile
+import unicodedata
 from pathlib import Path
 from typing import Optional

@@ -19,8 +21,16 @@ BUCKET_REF_AUDIOS = "ref-audios"


 def sanitize_filename(filename: str) -> str:
-    """清理文件名，移除特殊字符"""
-    safe_name = re.sub(r'[<>:"/\\|?*\s]', '_', filename)
+    """清理文件名用于 Storage key（仅保留 ASCII 安全字符）。"""
+    normalized = unicodedata.normalize("NFKD", filename)
+    ascii_name = normalized.encode("ascii", "ignore").decode("ascii")
+    safe_name = re.sub(r"[^A-Za-z0-9._-]+", "_", ascii_name).strip("._-")
+
+    # 纯中文/emoji 等场景会被清空，使用稳定哈希兜底，避免 InvalidKey
+    if not safe_name:
+        digest = hashlib.md5(filename.encode("utf-8")).hexdigest()[:12]
+        safe_name = f"audio_{digest}"
+
    if len(safe_name) > 50:
        ext = Path(safe_name).suffix
        safe_name = safe_name[:50 - len(ext)] + ext
--- a/backend/app/modules/tools/router.py
+++ b/backend/app/modules/tools/router.py
@@ -13,11 +13,12 @@ router = APIRouter()
 async def extract_script_tool(
    file: Optional[UploadFile] = File(None),
    url: Optional[str] = Form(None),
-    rewrite: bool = Form(True)
+    rewrite: bool = Form(True),
+    custom_prompt: Optional[str] = Form(None)
 ):
    """独立文案提取工具"""
    try:
-        result = await service.extract_script(file=file, url=url, rewrite=rewrite)
+        result = await service.extract_script(file=file, url=url, rewrite=rewrite, custom_prompt=custom_prompt)
        return success_response(result)
    except ValueError as e:
        raise HTTPException(400, str(e))
--- a/backend/app/modules/tools/service.py
+++ b/backend/app/modules/tools/service.py
@@ -17,9 +17,9 @@ from app.services.whisper_service import whisper_service
 from app.services.glm_service import glm_service


-async def extract_script(file=None, url: Optional[str] = None, rewrite: bool = True) -> dict:
+async def extract_script(file=None, url: Optional[str] = None, rewrite: bool = True, custom_prompt: Optional[str] = None) -> dict:
    """
-    文案提取：上传文件或视频链接 -> Whisper 转写 -> (可选) GLM 洗稿
+    文案提取：上传文件或视频链接 -> Whisper 转写 -> (可选) GLM 改写
    """
    if not file and not url:
        raise ValueError("必须提供文件或视频链接")
@@ -63,11 +63,11 @@ async def extract_script(file=None, url: Optional[str] = None, rewrite: bool = T
        # 2. 提取文案 (Whisper)
        script = await whisper_service.transcribe(str(audio_path))

-        # 3. AI 洗稿 (GLM)
+        # 3. AI 改写 (GLM)
        rewritten = None
        if rewrite and script and len(script.strip()) > 0:
            logger.info("Rewriting script...")
-            rewritten = await glm_service.rewrite_script(script)
+            rewritten = await glm_service.rewrite_script(script, custom_prompt)

        return {
            "original_script": script,
@@ -156,125 +156,120 @@ def _download_yt_dlp(url_value: str, temp_dir: Path, timestamp: int) -> Path:
        'quiet': True,
        'no_warnings': True,
        'http_headers': {
-            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36',
+            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
            'Referer': 'https://www.douyin.com/',
        }
    }

-    with yt_dlp.YoutubeDL() as ydl_raw:
-        ydl: Any = ydl_raw
-        ydl.params.update(ydl_opts)
+    with yt_dlp.YoutubeDL(ydl_opts) as ydl:
        info = ydl.extract_info(url_value, download=True)
        if 'requested_downloads' in info:
            downloaded_file = info['requested_downloads'][0]['filepath']
        else:
            ext = info.get('ext', 'mp4')
-            id = info.get('id')
-            downloaded_file = str(temp_dir / f"tool_download_{timestamp}_{id}.{ext}")
+            vid_id = info.get('id')
+            downloaded_file = str(temp_dir / f"tool_download_{timestamp}_{vid_id}.{ext}")

        return Path(downloaded_file)


 async def _download_douyin_manual(url: str, temp_dir: Path, timestamp: int) -> Optional[Path]:
-    """手动下载抖音视频 (Fallback)"""
-    logger.info(f"[SuperIPAgent] Starting download for: {url}")
+    """手动下载抖音视频 (Fallback) — 通过移动端分享页获取播放地址"""
+    logger.info(f"[douyin-fallback] Starting download for: {url}")

    try:
+        # 1. 解析短链接，提取视频 ID
        headers = {
-            "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
+            "user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15"
        }

        async with httpx.AsyncClient(follow_redirects=True, timeout=10.0) as client:
            resp = await client.get(url, headers=headers)
            final_url = str(resp.url)

-        logger.info(f"[SuperIPAgent] Final URL: {final_url}")
+        logger.info(f"[douyin-fallback] Final URL: {final_url}")

-        modal_id = None
+        video_id = None
        match = re.search(r'/video/(\d+)', final_url)
        if match:
-            modal_id = match.group(1)
+            video_id = match.group(1)

-        if not modal_id:
-            logger.error("[SuperIPAgent] Could not extract modal_id")
+        if not video_id:
+            logger.error("[douyin-fallback] Could not extract video_id")
            return None

-        logger.info(f"[SuperIPAgent] Extracted modal_id: {modal_id}")
+        logger.info(f"[douyin-fallback] Extracted video_id: {video_id}")

-        target_url = f"https://www.douyin.com/user/MS4wLjABAAAAN_s_hups7LD0N4qnrM3o2gI0vuG3pozNaEolz2_py3cHTTrpVr1Z4dukFD9SOlwY?from_tab_name=main&modal_id={modal_id}"
+        # 2. 获取新鲜 ttwid
+        ttwid = ""
+        try:
+            async with httpx.AsyncClient(timeout=10.0) as client:
+                ttwid_resp = await client.post(
+                    "https://ttwid.bytedance.com/ttwid/union/register/",
+                    json={
+                        "region": "cn", "aid": 6383, "needFid": False,
+                        "service": "www.douyin.com",
+                        "migrate_info": {"ticket": "", "source": "node"},
+                        "cbUrlProtocol": "https", "union": True,
+                    }
+                )
+                ttwid = ttwid_resp.cookies.get("ttwid", "")
+                logger.info(f"[douyin-fallback] Got fresh ttwid (len={len(ttwid)})")
+        except Exception as e:
+            logger.warning(f"[douyin-fallback] Failed to get ttwid: {e}")

-        from app.core.config import settings
-        if not settings.DOUYIN_COOKIE:
-            logger.warning("[SuperIPAgent] DOUYIN_COOKIE 未配置，视频下载可能失败")
-
-        headers_with_cookie = {
-            "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
-            "cookie": settings.DOUYIN_COOKIE,
-            "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36",
+        # 3. 访问移动端分享页提取播放地址
+        page_headers = {
+            "user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15",
+            "cookie": f"ttwid={ttwid}" if ttwid else "",
        }

-        logger.info(f"[SuperIPAgent] Requesting page with Cookie...")
+        async with httpx.AsyncClient(follow_redirects=True, timeout=15.0) as client:
+            page_resp = await client.get(
+                f"https://m.douyin.com/share/video/{video_id}",
+                headers=page_headers,
+            )

-        async with httpx.AsyncClient(timeout=10.0) as client:
-            response = await client.get(target_url, headers=headers_with_cookie)
+        page_text = page_resp.text
+        logger.info(f"[douyin-fallback] Mobile page length: {len(page_text)}")

-        content_match = re.findall(r'<script id="RENDER_DATA" type="application/json">(.*?)</script>', response.text)
-        if not content_match:
-            if "SSR_HYDRATED_DATA" in response.text:
-                content_match = re.findall(r'<script id="SSR_HYDRATED_DATA" type="application/json">(.*?)</script>', response.text)
-
-        if not content_match:
-            logger.error(f"[SuperIPAgent] Could not find RENDER_DATA in page (len={len(response.text)})")
-            return None
-
-        content = unquote(content_match[0])
-        try:
-            data = json.loads(content)
-        except:
-            logger.error("[SuperIPAgent] JSON decode failed")
-            return None
-
-        video_url = None
-        try:
-            if "app" in data and "videoDetail" in data["app"]:
-                info = data["app"]["videoDetail"]["video"]
-                if "bitRateList" in info and info["bitRateList"]:
-                    video_url = info["bitRateList"][0]["playAddr"][0]["src"]
-                elif "playAddr" in info and info["playAddr"]:
-                    video_url = info["playAddr"][0]["src"]
-        except Exception as e:
-            logger.error(f"[SuperIPAgent] Path extraction failed: {e}")
-
-        if not video_url:
-            logger.error("[SuperIPAgent] No video_url found")
+        # 4. 提取 play_addr
+        addr_match = re.search(
+            r'"play_addr":\{"uri":"([^"]+)","url_list":\["([^"]+)"',
+            page_text,
+        )
+        if not addr_match:
+            logger.error("[douyin-fallback] Could not find play_addr in mobile page")
            return None

+        video_url = addr_match.group(2).replace(r"\u002F", "/")
        if video_url.startswith("//"):
            video_url = "https:" + video_url

-        logger.info(f"[SuperIPAgent] Found video URL: {video_url[:50]}...")
+        logger.info(f"[douyin-fallback] Found video URL: {video_url[:80]}...")

+        # 5. 下载视频
        temp_path = temp_dir / f"douyin_manual_{timestamp}.mp4"
        download_headers = {
-            'Referer': 'https://www.douyin.com/',
-            'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
+            "Referer": "https://www.douyin.com/",
+            "User-Agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15",
        }

-        async with httpx.AsyncClient(timeout=60.0) as client:
+        async with httpx.AsyncClient(timeout=120.0, follow_redirects=True) as client:
            async with client.stream("GET", video_url, headers=download_headers) as dl_resp:
                if dl_resp.status_code == 200:
-                    with open(temp_path, 'wb') as f:
+                    with open(temp_path, "wb") as f:
                        async for chunk in dl_resp.aiter_bytes(chunk_size=8192):
                            f.write(chunk)

-                    logger.info(f"[SuperIPAgent] Downloaded successfully: {temp_path}")
+                    logger.info(f"[douyin-fallback] Downloaded successfully: {temp_path}")
                    return temp_path
                else:
-                    logger.error(f"[SuperIPAgent] Download failed: {dl_resp.status_code}")
+                    logger.error(f"[douyin-fallback] Download failed: {dl_resp.status_code}")
                    return None

    except Exception as e:
-        logger.error(f"[SuperIPAgent] Logic failed: {e}")
+        logger.error(f"[douyin-fallback] Logic failed: {e}")
        return None


--- a/backend/app/modules/videos/schemas.py
+++ b/backend/app/modules/videos/schemas.py
@@ -26,6 +26,10 @@ class GenerateRequest(BaseModel):
    enable_subtitles: bool = True
    subtitle_style_id: Optional[str] = None
    title_style_id: Optional[str] = None
+    secondary_title: Optional[str] = None
+    secondary_title_style_id: Optional[str] = None
+    secondary_title_font_size: Optional[int] = None
+    secondary_title_top_margin: Optional[int] = None
    subtitle_font_size: Optional[int] = None
    title_font_size: Optional[int] = None
    title_top_margin: Optional[int] = None
--- a/backend/app/modules/videos/workflow.py
+++ b/backend/app/modules/videos/workflow.py
@@ -598,14 +598,17 @@ async def process_video_generation(task_id: str, req: GenerateRequest, user_id:
            else:
                logger.warning(f"BGM not found: {req.bgm_id}")

-        use_remotion = (captions_path and captions_path.exists()) or req.title
+        use_remotion = (captions_path and captions_path.exists()) or req.title or req.secondary_title

        subtitle_style = None
        title_style = None
+        secondary_title_style = None
        if req.enable_subtitles:
            subtitle_style = get_style("subtitle", req.subtitle_style_id) or get_default_style("subtitle")
        if req.title:
            title_style = get_style("title", req.title_style_id) or get_default_style("title")
+        if req.secondary_title:
+            secondary_title_style = get_style("title", req.secondary_title_style_id) or get_default_style("title")

        if req.subtitle_font_size and req.enable_subtitles:
            if subtitle_style is None:
@@ -627,6 +630,16 @@ async def process_video_generation(task_id: str, req: GenerateRequest, user_id:
                subtitle_style = {}
            subtitle_style["bottom_margin"] = int(req.subtitle_bottom_margin)

+        if req.secondary_title_font_size and req.secondary_title:
+            if secondary_title_style is None:
+                secondary_title_style = {}
+            secondary_title_style["font_size"] = int(req.secondary_title_font_size)
+
+        if req.secondary_title_top_margin is not None and req.secondary_title:
+            if secondary_title_style is None:
+                secondary_title_style = {}
+            secondary_title_style["top_margin"] = int(req.secondary_title_top_margin)
+
        if use_remotion:
            subtitle_style = prepare_style_for_remotion(
                subtitle_style,
@@ -638,6 +651,11 @@ async def process_video_generation(task_id: str, req: GenerateRequest, user_id:
                temp_dir,
                f"{task_id}_title_font"
            )
+            secondary_title_style = prepare_style_for_remotion(
+                secondary_title_style,
+                temp_dir,
+                f"{task_id}_secondary_title_font"
+            )

        final_output_local_path = temp_dir / f"{task_id}_output.mp4"
        temp_files.append(final_output_local_path)
@@ -675,6 +693,8 @@ async def process_video_generation(task_id: str, req: GenerateRequest, user_id:
                        enable_subtitles=req.enable_subtitles,
                        subtitle_style=subtitle_style,
                        title_style=title_style,
+                        secondary_title=req.secondary_title,
+                        secondary_title_style=secondary_title_style,
                        on_progress=on_remotion_progress
                    )
                    print(f"[Pipeline] Remotion render completed")
--- a/backend/app/services/glm_service.py
+++ b/backend/app/services/glm_service.py
@@ -35,18 +35,19 @@ class GLMService:
        Returns:
            {"title": "标题", "tags": ["标签1", "标签2", ...]}
        """
-        prompt = f"""根据以下口播文案，生成一个吸引人的短视频标题和3个相关标签。
+        prompt = f"""根据以下口播文案，生成一个吸引人的短视频标题、副标题和3个相关标签。

 口播文案：
 {text}

 要求：
 1. 标题要简洁有力，能吸引观众点击，不超过10个字
-2. 标签要与内容相关，便于搜索和推荐，只要3个
-3. 标题和标签必须使用与口播文案相同的语言（如文案是英文就用英文，日文就用日文）
+2. 副标题是对标题的补充说明或描述性文字，不超过20个字
+3. 标签要与内容相关，便于搜索和推荐，只要3个
+4. 标题、副标题和标签必须使用与口播文案相同的语言（如文案是英文就用英文，日文就用日文）

 请严格按以下JSON格式返回（不要包含其他内容）：
-{{"title": "标题", "tags": ["标签1", "标签2", "标签3"]}}"""
+{{"title": "标题", "secondary_title": "副标题", "tags": ["标签1", "标签2", "标签3"]}}"""

        try:
            client = self._get_client()
@@ -75,17 +76,24 @@ class GLMService:
            logger.error(f"GLM service error: {e}")
            raise Exception(f"AI 生成失败: {str(e)}")

-    async def rewrite_script(self, text: str) -> str:
+    async def rewrite_script(self, text: str, custom_prompt: str = None) -> str:
        """
-        AI 洗稿（文案改写）
+        AI 改写文案

        Args:
            text: 原始文案
+            custom_prompt: 自定义提示词，为空则使用默认提示词

        Returns:
            改写后的文案
        """
-        prompt = f"""请将以下视频文案进行改写。
+        if custom_prompt and custom_prompt.strip():
+            prompt = f"""{custom_prompt.strip()}
+
+原始文案：
+{text}"""
+        else:
+            prompt = f"""请将以下视频文案进行改写。

 原始文案：
 {text}
@@ -174,6 +182,8 @@ class GLMService:

        # 尝试提取 JSON 块
        json_match = re.search(r'\{[^{}]*"title"[^{}]*"tags"[^{}]*\}', content, re.DOTALL)
+        if not json_match:
+            json_match = re.search(r'\{[^{}]*"title"[^{}]*"secondary_title"[^{}]*"tags"[^{}]*\}', content, re.DOTALL)
        if json_match:
            try:
                return json.loads(json_match.group())
--- a/backend/app/services/remotion_service.py
+++ b/backend/app/services/remotion_service.py
@@ -36,6 +36,8 @@ class RemotionService:
        enable_subtitles: bool = True,
        subtitle_style: Optional[dict] = None,
        title_style: Optional[dict] = None,
+        secondary_title: Optional[str] = None,
+        secondary_title_style: Optional[dict] = None,
        on_progress: Optional[Callable[[int], None]] = None
    ) -> str:
        """
@@ -86,6 +88,12 @@ class RemotionService:
        if title_style:
            cmd.extend(["--titleStyle", json.dumps(title_style, ensure_ascii=False)])

+        if secondary_title:
+            cmd.extend(["--secondaryTitle", secondary_title])
+
+        if secondary_title_style:
+            cmd.extend(["--secondaryTitleStyle", json.dumps(secondary_title_style, ensure_ascii=False)])
+
        logger.info(f"Running Remotion render: {' '.join(cmd)}")

        # 在线程池中运行子进程
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -29,6 +29,9 @@ python-jose[cryptography]>=3.3.0
 passlib[bcrypt]>=1.7.4
 bcrypt==4.0.1

+# 支付宝支付
+python-alipay-sdk>=3.6.0
+
 # 字幕对齐
 faster-whisper>=1.0.0

--- a/frontend/src/features/home/model/useHomeController.ts
+++ b/frontend/src/features/home/model/useHomeController.ts
@@ -9,7 +9,7 @@ import {
  resolveBgmUrl,
  resolveMediaUrl,
 } from "@/shared/lib/media";
-import { clampTitle } from "@/shared/lib/title";
+import { clampTitle, clampSecondaryTitle, SECONDARY_TITLE_MAX_LENGTH } from "@/shared/lib/title";
 import { useTitleInput } from "@/shared/hooks/useTitleInput";
 import { useAuth } from "@/shared/contexts/AuthContext";
 import { useTask } from "@/shared/contexts/TaskContext";
@@ -157,6 +157,13 @@ export const useHomeController = () => {
  const [showStylePreview, setShowStylePreview] = useState<boolean>(false);
  const [materialDimensions, setMaterialDimensions] = useState<{ width: number; height: number } | null>(null);

+  // 副标题相关状态
+  const [videoSecondaryTitle, setVideoSecondaryTitle] = useState<string>("");
+  const [selectedSecondaryTitleStyleId, setSelectedSecondaryTitleStyleId] = useState<string>("");
+  const [secondaryTitleFontSize, setSecondaryTitleFontSize] = useState<number>(48);
+  const [secondaryTitleTopMargin, setSecondaryTitleTopMargin] = useState<number>(12);
+  const [secondaryTitleSizeLocked, setSecondaryTitleSizeLocked] = useState<boolean>(false);
+

  // 背景音乐相关状态
  const [selectedBgmId, setSelectedBgmId] = useState<string>("");
@@ -430,6 +437,8 @@ export const useHomeController = () => {
    setText,
    videoTitle,
    setVideoTitle,
+    videoSecondaryTitle,
+    setVideoSecondaryTitle,
    ttsMode,
    setTtsMode,
    voice,
@@ -442,14 +451,21 @@ export const useHomeController = () => {
    setSelectedSubtitleStyleId,
    selectedTitleStyleId,
    setSelectedTitleStyleId,
+    selectedSecondaryTitleStyleId,
+    setSelectedSecondaryTitleStyleId,
    subtitleFontSize,
    setSubtitleFontSize,
    titleFontSize,
    setTitleFontSize,
+    secondaryTitleFontSize,
+    setSecondaryTitleFontSize,
    setSubtitleSizeLocked,
    setTitleSizeLocked,
+    setSecondaryTitleSizeLocked,
    titleTopMargin,
    setTitleTopMargin,
+    secondaryTitleTopMargin,
+    setSecondaryTitleTopMargin,
    titleDisplayMode,
    setTitleDisplayMode,
    subtitleBottomMargin,
@@ -491,6 +507,12 @@ export const useHomeController = () => {
    onCommit: syncTitleToPublish,
  });

+  const secondaryTitleInput = useTitleInput({
+    value: videoSecondaryTitle,
+    onChange: setVideoSecondaryTitle,
+    maxLength: SECONDARY_TITLE_MAX_LENGTH,
+  });
+
  // 加载素材列表和历史视频
  useEffect(() => {
    if (isAuthLoading) return;
@@ -582,6 +604,16 @@ export const useHomeController = () => {
    }
  }, [titleStyles, selectedTitleStyleId, titleSizeLocked]);

+  useEffect(() => {
+    if (secondaryTitleSizeLocked || titleStyles.length === 0) return;
+    const active = titleStyles.find((s) => s.id === selectedSecondaryTitleStyleId)
+      || titleStyles.find((s) => s.is_default)
+      || titleStyles[0];
+    if (active?.font_size) {
+      setSecondaryTitleFontSize(active.font_size);
+    }
+  }, [titleStyles, selectedSecondaryTitleStyleId, secondaryTitleSizeLocked]);
+
  // 移除重复的 BGM 持久化恢复逻辑 (已统一移动到 useHomePersistence 中)
  // useEffect(() => { ... })

@@ -741,7 +773,7 @@ export const useHomeController = () => {

    setIsGeneratingMeta(true);
    try {
-      const { data: res } = await api.post<ApiResponse<{ title?: string; tags?: string[] }>>(
+      const { data: res } = await api.post<ApiResponse<{ title?: string; secondary_title?: string; tags?: string[] }>>(
        "/api/ai/generate-meta",
        { text: text.trim() }
      );
@@ -751,6 +783,10 @@ export const useHomeController = () => {
      const nextTitle = clampTitle(payload.title || "");
      titleInput.commitValue(nextTitle);

+      // 更新副标题
+      const nextSecondaryTitle = clampSecondaryTitle(payload.secondary_title || "");
+      secondaryTitleInput.commitValue(nextSecondaryTitle);
+
      // 同步到发布页 localStorage
      localStorage.setItem(`vigent_${storageKey}_publish_tags`, JSON.stringify(payload.tags || []));
    } catch (err: unknown) {
@@ -950,6 +986,17 @@ export const useHomeController = () => {
        payload.title_top_margin = Math.round(titleTopMargin);
      }

+      if (videoSecondaryTitle.trim()) {
+        payload.secondary_title = videoSecondaryTitle.trim();
+        if (selectedSecondaryTitleStyleId) {
+          payload.secondary_title_style_id = selectedSecondaryTitleStyleId;
+        }
+        if (secondaryTitleFontSize) {
+          payload.secondary_title_font_size = Math.round(secondaryTitleFontSize);
+        }
+        payload.secondary_title_top_margin = Math.round(secondaryTitleTopMargin);
+      }
+
      payload.subtitle_bottom_margin = Math.round(subtitleBottomMargin);

      if (enableBgm && selectedBgmId) {
@@ -1049,6 +1096,15 @@ export const useHomeController = () => {
    titleFontSize,
    setTitleFontSize,
    setTitleSizeLocked,
+    videoSecondaryTitle,
+    secondaryTitleInput,
+    selectedSecondaryTitleStyleId,
+    setSelectedSecondaryTitleStyleId,
+    secondaryTitleFontSize,
+    setSecondaryTitleFontSize,
+    setSecondaryTitleSizeLocked,
+    secondaryTitleTopMargin,
+    setSecondaryTitleTopMargin,
    subtitleStyles,
    selectedSubtitleStyleId,
    setSelectedSubtitleStyleId,
--- a/frontend/src/features/home/model/useHomePersistence.ts
+++ b/frontend/src/features/home/model/useHomePersistence.ts
@@ -1,5 +1,5 @@
 import { useEffect, useState } from "react";
-import { clampTitle } from "@/shared/lib/title";
+import { clampTitle, clampSecondaryTitle } from "@/shared/lib/title";

 interface RefAudio {
  id: string;
@@ -17,6 +17,8 @@ interface UseHomePersistenceOptions {
  setText: React.Dispatch<React.SetStateAction<string>>;
  videoTitle: string;
  setVideoTitle: React.Dispatch<React.SetStateAction<string>>;
+  videoSecondaryTitle: string;
+  setVideoSecondaryTitle: React.Dispatch<React.SetStateAction<string>>;
  ttsMode: 'edgetts' | 'voiceclone';
  setTtsMode: React.Dispatch<React.SetStateAction<'edgetts' | 'voiceclone'>>;
  voice: string;
@@ -29,14 +31,21 @@ interface UseHomePersistenceOptions {
  setSelectedSubtitleStyleId: React.Dispatch<React.SetStateAction<string>>;
  selectedTitleStyleId: string;
  setSelectedTitleStyleId: React.Dispatch<React.SetStateAction<string>>;
+  selectedSecondaryTitleStyleId: string;
+  setSelectedSecondaryTitleStyleId: React.Dispatch<React.SetStateAction<string>>;
  subtitleFontSize: number;
  setSubtitleFontSize: React.Dispatch<React.SetStateAction<number>>;
  titleFontSize: number;
  setTitleFontSize: React.Dispatch<React.SetStateAction<number>>;
+  secondaryTitleFontSize: number;
+  setSecondaryTitleFontSize: React.Dispatch<React.SetStateAction<number>>;
  setSubtitleSizeLocked: React.Dispatch<React.SetStateAction<boolean>>;
  setTitleSizeLocked: React.Dispatch<React.SetStateAction<boolean>>;
+  setSecondaryTitleSizeLocked: React.Dispatch<React.SetStateAction<boolean>>;
  titleTopMargin: number;
  setTitleTopMargin: React.Dispatch<React.SetStateAction<number>>;
+  secondaryTitleTopMargin: number;
+  setSecondaryTitleTopMargin: React.Dispatch<React.SetStateAction<number>>;
  titleDisplayMode: 'short' | 'persistent';
  setTitleDisplayMode: React.Dispatch<React.SetStateAction<'short' | 'persistent'>>;
  subtitleBottomMargin: number;
@@ -65,6 +74,8 @@ export const useHomePersistence = ({
  setText,
  videoTitle,
  setVideoTitle,
+  videoSecondaryTitle,
+  setVideoSecondaryTitle,
  ttsMode,
  setTtsMode,
  voice,
@@ -77,14 +88,21 @@ export const useHomePersistence = ({
  setSelectedSubtitleStyleId,
  selectedTitleStyleId,
  setSelectedTitleStyleId,
+  selectedSecondaryTitleStyleId,
+  setSelectedSecondaryTitleStyleId,
  subtitleFontSize,
  setSubtitleFontSize,
  titleFontSize,
  setTitleFontSize,
+  secondaryTitleFontSize,
+  setSecondaryTitleFontSize,
  setSubtitleSizeLocked,
  setTitleSizeLocked,
+  setSecondaryTitleSizeLocked,
  titleTopMargin,
  setTitleTopMargin,
+  secondaryTitleTopMargin,
+  setSecondaryTitleTopMargin,
  titleDisplayMode,
  setTitleDisplayMode,
  subtitleBottomMargin,
@@ -112,20 +130,24 @@ export const useHomePersistence = ({

    const savedText = localStorage.getItem(`vigent_${storageKey}_text`);
    const savedTitle = localStorage.getItem(`vigent_${storageKey}_title`);
+    const savedSecondaryTitle = localStorage.getItem(`vigent_${storageKey}_secondaryTitle`);
    const savedTtsMode = localStorage.getItem(`vigent_${storageKey}_ttsMode`);
    const savedVoice = localStorage.getItem(`vigent_${storageKey}_voice`);
    const savedTextLang = localStorage.getItem(`vigent_${storageKey}_textLang`);
    const savedMaterial = localStorage.getItem(`vigent_${storageKey}_material`);
    const savedSubtitleStyle = localStorage.getItem(`vigent_${storageKey}_subtitleStyle`);
    const savedTitleStyle = localStorage.getItem(`vigent_${storageKey}_titleStyle`);
+    const savedSecondaryTitleStyle = localStorage.getItem(`vigent_${storageKey}_secondaryTitleStyle`);
    const savedSubtitleFontSize = localStorage.getItem(`vigent_${storageKey}_subtitleFontSize`);
    const savedTitleFontSize = localStorage.getItem(`vigent_${storageKey}_titleFontSize`);
+    const savedSecondaryTitleFontSize = localStorage.getItem(`vigent_${storageKey}_secondaryTitleFontSize`);
    const savedBgmId = localStorage.getItem(`vigent_${storageKey}_bgmId`);
    const savedSelectedVideoId = localStorage.getItem(`vigent_${storageKey}_selectedVideoId`);
    const savedSelectedAudioId = localStorage.getItem(`vigent_${storageKey}_selectedAudioId`);
    const savedBgmVolume = localStorage.getItem(`vigent_${storageKey}_bgmVolume`);
    const savedEnableBgm = localStorage.getItem(`vigent_${storageKey}_enableBgm`);
    const savedTitleTopMargin = localStorage.getItem(`vigent_${storageKey}_titleTopMargin`);
+    const savedSecondaryTitleTopMargin = localStorage.getItem(`vigent_${storageKey}_secondaryTitleTopMargin`);
    const savedTitleDisplayMode = localStorage.getItem(`vigent_${storageKey}_titleDisplayMode`);
    const savedSubtitleBottomMargin = localStorage.getItem(`vigent_${storageKey}_subtitleBottomMargin`);
    const savedOutputAspectRatio = localStorage.getItem(`vigent_${storageKey}_outputAspectRatio`);
@@ -133,6 +155,7 @@ export const useHomePersistence = ({

    setText(savedText || "大家好，欢迎来到我的频道，今天给大家分享一些有趣的内容。");
    setVideoTitle(savedTitle ? clampTitle(savedTitle) : "");
+    setVideoSecondaryTitle(savedSecondaryTitle ? clampSecondaryTitle(savedSecondaryTitle) : "");
    setTtsMode((savedTtsMode as 'edgetts' | 'voiceclone') || 'edgetts');
    setVoice(savedVoice || "zh-CN-YunxiNeural");
    if (savedTextLang) setTextLang(savedTextLang);
@@ -152,6 +175,7 @@ export const useHomePersistence = ({
    }
    if (savedSubtitleStyle) setSelectedSubtitleStyleId(savedSubtitleStyle);
    if (savedTitleStyle) setSelectedTitleStyleId(savedTitleStyle);
+    if (savedSecondaryTitleStyle) setSelectedSecondaryTitleStyleId(savedSecondaryTitleStyle);

    if (savedSubtitleFontSize) {
      const parsed = parseInt(savedSubtitleFontSize, 10);
@@ -169,6 +193,14 @@ export const useHomePersistence = ({
      }
    }

+    if (savedSecondaryTitleFontSize) {
+      const parsed = parseInt(savedSecondaryTitleFontSize, 10);
+      if (!Number.isNaN(parsed)) {
+        setSecondaryTitleFontSize(parsed);
+        setSecondaryTitleSizeLocked(true);
+      }
+    }
+
    if (savedBgmId) setSelectedBgmId(savedBgmId);
    if (savedBgmVolume) setBgmVolume(parseFloat(savedBgmVolume));
    if (savedEnableBgm !== null) setEnableBgm(savedEnableBgm === 'true');
@@ -179,6 +211,10 @@ export const useHomePersistence = ({
      const parsed = parseInt(savedTitleTopMargin, 10);
      if (!Number.isNaN(parsed)) setTitleTopMargin(parsed);
    }
+    if (savedSecondaryTitleTopMargin) {
+      const parsed = parseInt(savedSecondaryTitleTopMargin, 10);
+      if (!Number.isNaN(parsed)) setSecondaryTitleTopMargin(parsed);
+    }
    if (savedTitleDisplayMode === 'short' || savedTitleDisplayMode === 'persistent') {
      setTitleDisplayMode(savedTitleDisplayMode);
    }
@@ -206,6 +242,7 @@ export const useHomePersistence = ({
    setSelectedMaterials,
    setSelectedSubtitleStyleId,
    setSelectedTitleStyleId,
+    setSelectedSecondaryTitleStyleId,
    setSelectedVideoId,
    setSelectedAudioId,
    setSpeed,
@@ -215,12 +252,16 @@ export const useHomePersistence = ({
    setTextLang,
    setTitleFontSize,
    setTitleSizeLocked,
+    setSecondaryTitleFontSize,
+    setSecondaryTitleSizeLocked,
    setTitleTopMargin,
+    setSecondaryTitleTopMargin,
    setTitleDisplayMode,
    setSubtitleBottomMargin,
    setOutputAspectRatio,
    setTtsMode,
    setVideoTitle,
+    setVideoSecondaryTitle,
    setVoice,
    storageKey,
  ]);
@@ -241,6 +282,14 @@ export const useHomePersistence = ({
    return () => clearTimeout(timeout);
  }, [videoTitle, storageKey, isRestored]);

+  useEffect(() => {
+    if (!isRestored) return;
+    const timeout = setTimeout(() => {
+      localStorage.setItem(`vigent_${storageKey}_secondaryTitle`, videoSecondaryTitle);
+    }, 300);
+    return () => clearTimeout(timeout);
+  }, [videoSecondaryTitle, storageKey, isRestored]);
+
  useEffect(() => {
    if (isRestored) localStorage.setItem(`vigent_${storageKey}_ttsMode`, ttsMode);
  }, [ttsMode, storageKey, isRestored]);
@@ -271,6 +320,12 @@ export const useHomePersistence = ({
    }
  }, [selectedTitleStyleId, storageKey, isRestored]);

+  useEffect(() => {
+    if (isRestored && selectedSecondaryTitleStyleId) {
+      localStorage.setItem(`vigent_${storageKey}_secondaryTitleStyle`, selectedSecondaryTitleStyleId);
+    }
+  }, [selectedSecondaryTitleStyleId, storageKey, isRestored]);
+
  useEffect(() => {
    if (isRestored) {
      localStorage.setItem(`vigent_${storageKey}_subtitleFontSize`, String(subtitleFontSize));
@@ -283,12 +338,24 @@ export const useHomePersistence = ({
    }
  }, [titleFontSize, storageKey, isRestored]);

+  useEffect(() => {
+    if (isRestored) {
+      localStorage.setItem(`vigent_${storageKey}_secondaryTitleFontSize`, String(secondaryTitleFontSize));
+    }
+  }, [secondaryTitleFontSize, storageKey, isRestored]);
+
  useEffect(() => {
    if (isRestored) {
      localStorage.setItem(`vigent_${storageKey}_titleTopMargin`, String(titleTopMargin));
    }
  }, [titleTopMargin, storageKey, isRestored]);

+  useEffect(() => {
+    if (isRestored) {
+      localStorage.setItem(`vigent_${storageKey}_secondaryTitleTopMargin`, String(secondaryTitleTopMargin));
+    }
+  }, [secondaryTitleTopMargin, storageKey, isRestored]);
+
  useEffect(() => {
    if (isRestored) {
      localStorage.setItem(`vigent_${storageKey}_titleDisplayMode`, titleDisplayMode);
--- a/frontend/src/features/home/ui/FloatingStylePreview.tsx
+++ b/frontend/src/features/home/ui/FloatingStylePreview.tsx
@@ -35,9 +35,13 @@ interface TitleStyleOption {
 interface FloatingStylePreviewProps {
  onClose: () => void;
  videoTitle: string;
+  videoSecondaryTitle: string;
  titleStyles: TitleStyleOption[];
  selectedTitleStyleId: string;
  titleFontSize: number;
+  selectedSecondaryTitleStyleId: string;
+  secondaryTitleFontSize: number;
+  secondaryTitleTopMargin: number;
  subtitleStyles: SubtitleStyleOption[];
  selectedSubtitleStyleId: string;
  subtitleFontSize: number;
@@ -56,9 +60,13 @@ const DESKTOP_WIDTH = 280;
 export function FloatingStylePreview({
  onClose,
  videoTitle,
+  videoSecondaryTitle,
  titleStyles,
  selectedTitleStyleId,
  titleFontSize,
+  selectedSecondaryTitleStyleId,
+  secondaryTitleFontSize,
+  secondaryTitleTopMargin,
  subtitleStyles,
  selectedSubtitleStyleId,
  subtitleFontSize,
@@ -126,6 +134,22 @@ export function FloatingStylePreview({
  const scaledTitleTopMargin = Math.max(0, Math.round(titleTopMargin * responsiveScale));
  const scaledSubtitleBottomMargin = Math.max(0, Math.round(subtitleBottomMargin * responsiveScale));

+  // 副标题样式
+  const activeSecondaryTitleStyle = titleStyles.find((s) => s.id === selectedSecondaryTitleStyleId)
+    || activeTitleStyle;
+  const stColor = activeSecondaryTitleStyle?.color || "#FFFFFF";
+  const stStrokeColor = activeSecondaryTitleStyle?.stroke_color || "#000000";
+  const stStrokeSize = Math.max(1, Math.round((activeSecondaryTitleStyle?.stroke_size ?? 6) * responsiveScale));
+  const stLetterSpacing = Math.max(0, (activeSecondaryTitleStyle?.letter_spacing ?? 2) * responsiveScale);
+  const stFontWeight = activeSecondaryTitleStyle?.font_weight ?? 700;
+  const stFontFamilyName = `SecondaryTitlePreview-${activeSecondaryTitleStyle?.id || "default"}`;
+  const stFontUrl = activeSecondaryTitleStyle?.font_file
+    ? resolveAssetUrl(`fonts/${activeSecondaryTitleStyle.font_file}`)
+    : null;
+  const scaledSecondaryTitleFontSize = Math.max(24, Math.round(secondaryTitleFontSize * responsiveScale));
+  const scaledSecondaryTitleTopMargin = Math.max(0, Math.round(secondaryTitleTopMargin * responsiveScale));
+  const previewSecondaryTitleText = videoSecondaryTitle.trim() || "";
+
  const content = (
    <div
      style={{
@@ -159,9 +183,10 @@ export function FloatingStylePreview({
        className="relative overflow-hidden rounded-b-xl"
        style={{ height: `${previewHeight}px` }}
      >
-        {(titleFontUrl || subtitleFontUrl) && (
+        {(titleFontUrl || subtitleFontUrl || stFontUrl) && (
          <style>{`
            ${titleFontUrl ? `@font-face { font-family: '${titleFontFamilyName}'; src: url('${titleFontUrl}') format('${getFontFormat(activeTitleStyle?.font_file)}'); font-weight: 400; font-style: normal; }` : ''}
+            ${stFontUrl && stFontUrl !== titleFontUrl ? `@font-face { font-family: '${stFontFamilyName}'; src: url('${stFontUrl}') format('${getFontFormat(activeSecondaryTitleStyle?.font_file)}'); font-weight: 400; font-style: normal; }` : ''}
            ${subtitleFontUrl ? `@font-face { font-family: '${subtitleFontFamilyName}'; src: url('${subtitleFontUrl}') format('${getFontFormat(activeSubtitleStyle?.font_file)}'); font-weight: 400; font-style: normal; }` : ''}
          `}</style>
        )}
@@ -182,24 +207,55 @@ export function FloatingStylePreview({
              top: `${scaledTitleTopMargin}px`,
              left: 0,
              right: 0,
-              color: titleColor,
-              fontSize: `${scaledTitleFontSize}px`,
-              fontWeight: titleFontWeight,
-              fontFamily: titleFontUrl
-                ? `'${titleFontFamilyName}', "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif`
-                : '"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif',
-              textShadow: buildTextShadow(titleStrokeColor, titleStrokeSize),
-              letterSpacing: `${titleLetterSpacing}px`,
-              lineHeight: 1.2,
-              whiteSpace: 'normal',
-              wordBreak: 'break-word',
-              overflowWrap: 'anywhere',
-              boxSizing: 'border-box',
-              opacity: videoTitle.trim() ? 1 : 0.7,
+              display: 'flex',
+              flexDirection: 'column',
+              alignItems: 'center',
              padding: '0 5%',
+              boxSizing: 'border-box',
            }}
          >
-            {previewTitleText}
+            <div
+              style={{
+                color: titleColor,
+                fontSize: `${scaledTitleFontSize}px`,
+                fontWeight: titleFontWeight,
+                fontFamily: titleFontUrl
+                  ? `'${titleFontFamilyName}', "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif`
+                  : '"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif',
+                textShadow: buildTextShadow(titleStrokeColor, titleStrokeSize),
+                letterSpacing: `${titleLetterSpacing}px`,
+                lineHeight: 1.2,
+                whiteSpace: 'normal',
+                wordBreak: 'break-word',
+                overflowWrap: 'anywhere',
+                opacity: videoTitle.trim() ? 1 : 0.7,
+              }}
+            >
+              {previewTitleText}
+            </div>
+            {previewSecondaryTitleText && (
+              <div
+                style={{
+                  marginTop: `${scaledSecondaryTitleTopMargin}px`,
+                  color: stColor,
+                  fontSize: `${scaledSecondaryTitleFontSize}px`,
+                  fontWeight: stFontWeight,
+                  fontFamily: stFontUrl && stFontUrl !== titleFontUrl
+                    ? `'${stFontFamilyName}', "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif`
+                    : titleFontUrl
+                      ? `'${titleFontFamilyName}', "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif`
+                      : '"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif',
+                  textShadow: buildTextShadow(stStrokeColor, stStrokeSize),
+                  letterSpacing: `${stLetterSpacing}px`,
+                  lineHeight: 1.2,
+                  whiteSpace: 'normal',
+                  wordBreak: 'break-word',
+                  overflowWrap: 'anywhere',
+                }}
+              >
+                {previewSecondaryTitleText}
+              </div>
+            )}
          </div>

          <div
--- a/frontend/src/features/home/ui/HomePage.tsx
+++ b/frontend/src/features/home/ui/HomePage.tsx
@@ -70,6 +70,15 @@ export function HomePage() {
    titleFontSize,
    setTitleFontSize,
    setTitleSizeLocked,
+    videoSecondaryTitle,
+    secondaryTitleInput,
+    selectedSecondaryTitleStyleId,
+    setSelectedSecondaryTitleStyleId,
+    secondaryTitleFontSize,
+    setSecondaryTitleFontSize,
+    setSecondaryTitleSizeLocked,
+    secondaryTitleTopMargin,
+    setSecondaryTitleTopMargin,
    subtitleStyles,
    selectedSubtitleStyleId,
    setSelectedSubtitleStyleId,
@@ -217,6 +226,10 @@ export function HomePage() {
              onTitleChange={titleInput.handleChange}
              onTitleCompositionStart={titleInput.handleCompositionStart}
              onTitleCompositionEnd={titleInput.handleCompositionEnd}
+              videoSecondaryTitle={videoSecondaryTitle}
+              onSecondaryTitleChange={secondaryTitleInput.handleChange}
+              onSecondaryTitleCompositionStart={secondaryTitleInput.handleCompositionStart}
+              onSecondaryTitleCompositionEnd={secondaryTitleInput.handleCompositionEnd}
              titleStyles={titleStyles}
              selectedTitleStyleId={selectedTitleStyleId}
              onSelectTitleStyle={setSelectedTitleStyleId}
@@ -225,6 +238,15 @@ export function HomePage() {
                setTitleFontSize(value);
                setTitleSizeLocked(true);
              }}
+              selectedSecondaryTitleStyleId={selectedSecondaryTitleStyleId}
+              onSelectSecondaryTitleStyle={setSelectedSecondaryTitleStyleId}
+              secondaryTitleFontSize={secondaryTitleFontSize}
+              onSecondaryTitleFontSizeChange={(value) => {
+                setSecondaryTitleFontSize(value);
+                setSecondaryTitleSizeLocked(true);
+              }}
+              secondaryTitleTopMargin={secondaryTitleTopMargin}
+              onSecondaryTitleTopMarginChange={setSecondaryTitleTopMargin}
              subtitleStyles={subtitleStyles}
              selectedSubtitleStyleId={selectedSubtitleStyleId}
              onSelectSubtitleStyle={setSelectedSubtitleStyleId}
--- a/frontend/src/features/home/ui/ScriptExtractionModal.tsx
+++ b/frontend/src/features/home/ui/ScriptExtractionModal.tsx
@@ -26,9 +26,13 @@ export default function ScriptExtractionModal({
        selectedFile,
        activeTab,
        inputUrl,
+        customPrompt,
+        showCustomPrompt,
        setDoRewrite,
        setActiveTab,
        setInputUrl,
+        setCustomPrompt,
+        setShowCustomPrompt,
        handleDrag,
        handleDrop,
        handleFileChange,
@@ -187,18 +191,43 @@ export default function ScriptExtractionModal({
                            )}

                            {/* Options */}
-                            <div className="flex items-center gap-3 bg-white/5 rounded-xl p-4 border border-white/10">
-                                <label className="flex items-center gap-2 cursor-pointer">
-                                    <input
-                                        type="checkbox"
-                                        checked={doRewrite}
-                                        onChange={(e) => setDoRewrite(e.target.checked)}
-                                        className="w-4 h-4 rounded bg-white/10 border-white/20 text-purple-500 focus:ring-purple-500"
-                                    />
-                                    <span className="text-sm text-gray-300">
-                                        AI 智能改写（去口语化）
-                                    </span>
-                                </label>
+                            <div className="bg-white/5 rounded-xl border border-white/10 overflow-hidden">
+                                <div className="flex items-center justify-between p-4">
+                                    <label className="flex items-center gap-2 cursor-pointer">
+                                        <input
+                                            type="checkbox"
+                                            checked={doRewrite}
+                                            onChange={(e) => setDoRewrite(e.target.checked)}
+                                            className="w-4 h-4 rounded bg-white/10 border-white/20 text-purple-500 focus:ring-purple-500"
+                                        />
+                                        <span className="text-sm text-gray-300">
+                                            AI 智能改写
+                                        </span>
+                                    </label>
+                                    {doRewrite && (
+                                        <button
+                                            type="button"
+                                            onClick={() => setShowCustomPrompt(!showCustomPrompt)}
+                                            className="text-xs text-purple-400 hover:text-purple-300 transition-colors flex items-center gap-1"
+                                        >
+                                            自定义提示词 {showCustomPrompt ? "▲" : "▼"}
+                                        </button>
+                                    )}
+                                </div>
+                                {doRewrite && showCustomPrompt && (
+                                    <div className="px-4 pb-4 space-y-2">
+                                        <textarea
+                                            value={customPrompt}
+                                            onChange={(e) => setCustomPrompt(e.target.value)}
+                                            placeholder="输入自定义改写提示词..."
+                                            rows={3}
+                                            className="w-full bg-black/20 border border-white/10 rounded-lg px-3 py-2 text-sm text-white placeholder-gray-500 focus:outline-none focus:border-purple-500 transition-colors resize-none"
+                                        />
+                                        <p className="text-xs text-gray-500">
+                                            留空则使用默认提示词
+                                        </p>
+                                    </div>
+                                )}
                            </div>

                            {/* Error */}
@@ -261,7 +290,7 @@ export default function ScriptExtractionModal({
                                <div className="space-y-2">
                                    <div className="flex justify-between items-center">
                                        <h4 className="font-semibold text-purple-300 flex items-center gap-2">
-                                            ✨ AI 洗稿结果{" "}
+                                            ✨ AI 改写结果{" "}
                                            <span className="text-xs font-normal text-purple-400/70">
                                                (推荐)
                                            </span>
--- a/frontend/src/features/home/ui/TitleSubtitlePanel.tsx
+++ b/frontend/src/features/home/ui/TitleSubtitlePanel.tsx
@@ -38,11 +38,21 @@ interface TitleSubtitlePanelProps {
  onTitleChange: (value: string) => void;
  onTitleCompositionStart?: () => void;
  onTitleCompositionEnd?: (value: string) => void;
+  videoSecondaryTitle: string;
+  onSecondaryTitleChange: (value: string) => void;
+  onSecondaryTitleCompositionStart?: () => void;
+  onSecondaryTitleCompositionEnd?: (value: string) => void;
  titleStyles: TitleStyleOption[];
  selectedTitleStyleId: string;
  onSelectTitleStyle: (id: string) => void;
  titleFontSize: number;
  onTitleFontSizeChange: (value: number) => void;
+  selectedSecondaryTitleStyleId: string;
+  onSelectSecondaryTitleStyle: (id: string) => void;
+  secondaryTitleFontSize: number;
+  onSecondaryTitleFontSizeChange: (value: number) => void;
+  secondaryTitleTopMargin: number;
+  onSecondaryTitleTopMarginChange: (value: number) => void;
  subtitleStyles: SubtitleStyleOption[];
  selectedSubtitleStyleId: string;
  onSelectSubtitleStyle: (id: string) => void;
@@ -68,11 +78,21 @@ export function TitleSubtitlePanel({
  onTitleChange,
  onTitleCompositionStart,
  onTitleCompositionEnd,
+  videoSecondaryTitle,
+  onSecondaryTitleChange,
+  onSecondaryTitleCompositionStart,
+  onSecondaryTitleCompositionEnd,
  titleStyles,
  selectedTitleStyleId,
  onSelectTitleStyle,
  titleFontSize,
  onTitleFontSizeChange,
+  selectedSecondaryTitleStyleId,
+  onSelectSecondaryTitleStyle,
+  secondaryTitleFontSize,
+  onSecondaryTitleFontSizeChange,
+  secondaryTitleTopMargin,
+  onSecondaryTitleTopMarginChange,
  subtitleStyles,
  selectedSubtitleStyleId,
  onSelectSubtitleStyle,
@@ -109,9 +129,13 @@ export function TitleSubtitlePanel({
        <FloatingStylePreview
          onClose={onTogglePreview}
          videoTitle={videoTitle}
+          videoSecondaryTitle={videoSecondaryTitle}
          titleStyles={titleStyles}
          selectedTitleStyleId={selectedTitleStyleId}
          titleFontSize={titleFontSize}
+          selectedSecondaryTitleStyleId={selectedSecondaryTitleStyleId}
+          secondaryTitleFontSize={secondaryTitleFontSize}
+          secondaryTitleTopMargin={secondaryTitleTopMargin}
          subtitleStyles={subtitleStyles}
          selectedSubtitleStyleId={selectedSubtitleStyleId}
          subtitleFontSize={subtitleFontSize}
@@ -153,6 +177,19 @@ export function TitleSubtitlePanel({
        />
      </div>

+      <div className="mb-4">
+        <label className="text-sm text-gray-300 mb-2 block">片头副标题（限制20个字）</label>
+        <input
+          type="text"
+          value={videoSecondaryTitle}
+          onChange={(e) => onSecondaryTitleChange(e.target.value)}
+          onCompositionStart={onSecondaryTitleCompositionStart}
+          onCompositionEnd={(e) => onSecondaryTitleCompositionEnd?.(e.currentTarget.value)}
+          placeholder="输入副标题，显示在主标题下方"
+          className="w-full px-3 sm:px-4 py-2 text-sm sm:text-base bg-black/30 border border-white/10 rounded-xl text-white placeholder-gray-500 focus:outline-none focus:border-purple-500 transition-colors"
+        />
+      </div>
+
      {titleStyles.length > 0 && (
        <div className="mb-4">
          <label className="text-sm text-gray-300 mb-2 block">标题样式</label>
@@ -200,6 +237,53 @@ export function TitleSubtitlePanel({
        </div>
      )}

+      {titleStyles.length > 0 && (
+        <div className="mb-4">
+          <label className="text-sm text-gray-300 mb-2 block">副标题样式</label>
+          <div className="grid grid-cols-2 gap-2">
+            {titleStyles.map((style) => (
+              <button
+                key={style.id}
+                onClick={() => onSelectSecondaryTitleStyle(style.id)}
+                className={`p-2 rounded-lg border transition-all text-left ${selectedSecondaryTitleStyleId === style.id
+                  ? "border-purple-500 bg-purple-500/20"
+                  : "border-white/10 bg-white/5 hover:border-white/30"
+                  }`}
+              >
+                <div className="text-white text-sm truncate">{style.label}</div>
+                <div className="text-xs text-gray-400 truncate">
+                  {style.font_family || style.font_file || ""}
+                </div>
+              </button>
+            ))}
+          </div>
+          <div className="mt-3">
+            <label className="text-xs text-gray-400 mb-2 block">副标题字号: {secondaryTitleFontSize}px</label>
+            <input
+              type="range"
+              min="30"
+              max="100"
+              step="1"
+              value={secondaryTitleFontSize}
+              onChange={(e) => onSecondaryTitleFontSizeChange(parseInt(e.target.value, 10))}
+              className="w-full accent-purple-500"
+            />
+          </div>
+          <div className="mt-3">
+            <label className="text-xs text-gray-400 mb-2 block">副标题间距: {secondaryTitleTopMargin}px</label>
+            <input
+              type="range"
+              min="0"
+              max="100"
+              step="1"
+              value={secondaryTitleTopMargin}
+              onChange={(e) => onSecondaryTitleTopMarginChange(parseInt(e.target.value, 10))}
+              className="w-full accent-purple-500"
+            />
+          </div>
+        </div>
+      )}
+
      {subtitleStyles.length > 0 && (
        <div className="mt-4">
          <label className="text-sm text-gray-300 mb-2 block">字幕样式</label>
--- a/frontend/src/features/home/ui/script-extraction/useScriptExtraction.ts
+++ b/frontend/src/features/home/ui/script-extraction/useScriptExtraction.ts
@@ -1,4 +1,4 @@
-import { useState, useEffect, useCallback } from "react";
+import { useState, useEffect, useCallback, useRef } from "react";
 import api from "@/shared/api/axios";
 import { ApiResponse, unwrap } from "@/shared/api/types";
 import { toast } from "sonner";
@@ -7,6 +7,7 @@ export type ExtractionStep = "config" | "processing" | "result";
 export type InputTab = "file" | "url";

 const VALID_FILE_TYPES = [".mp4", ".mov", ".avi", ".mp3", ".wav", ".m4a"];
+const CUSTOM_PROMPT_KEY = "vigent_rewriteCustomPrompt";

 interface UseScriptExtractionOptions {
    isOpen: boolean;
@@ -23,8 +24,19 @@ export const useScriptExtraction = ({ isOpen }: UseScriptExtractionOptions) => {
    const [selectedFile, setSelectedFile] = useState<File | null>(null);
    const [activeTab, setActiveTab] = useState<InputTab>("url");
    const [inputUrl, setInputUrl] = useState("");
+    const [customPrompt, setCustomPrompt] = useState(() => typeof window !== "undefined" ? localStorage.getItem(CUSTOM_PROMPT_KEY) || "" : "");
+    const [showCustomPrompt, setShowCustomPrompt] = useState(false);

-    // Reset state when modal opens
+    // Debounced save customPrompt to localStorage
+    const debounceRef = useRef<ReturnType<typeof setTimeout>>(undefined);
+    useEffect(() => {
+        debounceRef.current = setTimeout(() => {
+            localStorage.setItem(CUSTOM_PROMPT_KEY, customPrompt);
+        }, 300);
+        return () => clearTimeout(debounceRef.current);
+    }, [customPrompt]);
+
+    // Reset state when modal opens (customPrompt is persistent, not reset)
    useEffect(() => {
        if (isOpen) {
            setStep("config");
@@ -101,6 +113,9 @@ export const useScriptExtraction = ({ isOpen }: UseScriptExtractionOptions) => {
                formData.append("url", inputUrl.trim());
            }
            formData.append("rewrite", doRewrite ? "true" : "false");
+            if (doRewrite && customPrompt.trim()) {
+                formData.append("custom_prompt", customPrompt.trim());
+            }

            const { data: res } = await api.post<
                ApiResponse<{ original_script: string; rewritten_script?: string }>
@@ -126,7 +141,7 @@ export const useScriptExtraction = ({ isOpen }: UseScriptExtractionOptions) => {
        } finally {
            setIsLoading(false);
        }
-    }, [activeTab, selectedFile, inputUrl, doRewrite]);
+    }, [activeTab, selectedFile, inputUrl, doRewrite, customPrompt]);

    const copyToClipboard = useCallback((text: string) => {
        if (navigator.clipboard && window.isSecureContext) {
@@ -193,10 +208,14 @@ export const useScriptExtraction = ({ isOpen }: UseScriptExtractionOptions) => {
        selectedFile,
        activeTab,
        inputUrl,
+        customPrompt,
+        showCustomPrompt,
        // Setters
        setDoRewrite,
        setActiveTab,
        setInputUrl,
+        setCustomPrompt,
+        setShowCustomPrompt,
        // Handlers
        handleDrag,
        handleDrop,
--- a/frontend/src/shared/lib/title.ts
+++ b/frontend/src/shared/lib/title.ts
@@ -1,8 +1,12 @@
 export const TITLE_MAX_LENGTH = 15;
+export const SECONDARY_TITLE_MAX_LENGTH = 20;

 export const clampTitle = (value: string, maxLength: number = TITLE_MAX_LENGTH) =>
  value.slice(0, maxLength);

+export const clampSecondaryTitle = (value: string, maxLength: number = SECONDARY_TITLE_MAX_LENGTH) =>
+  value.slice(0, maxLength);
+
 export const applyTitleLimit = (
  prev: string,
  next: string,
--- a/remotion/render.ts
+++ b/remotion/render.ts
@@ -19,6 +19,8 @@ interface RenderOptions {
  titleDisplayMode?: 'short' | 'persistent';
  subtitleStyle?: Record<string, unknown>;
  titleStyle?: Record<string, unknown>;
+  secondaryTitle?: string;
+  secondaryTitleStyle?: Record<string, unknown>;
  outputPath: string;
  fps?: number;
  enableSubtitles?: boolean;
@@ -75,6 +77,16 @@ async function parseArgs(): Promise<RenderOptions> {
          console.warn('Invalid titleStyle JSON');
        }
        break;
+      case 'secondaryTitle':
+        options.secondaryTitle = value;
+        break;
+      case 'secondaryTitleStyle':
+        try {
+          options.secondaryTitleStyle = JSON.parse(value);
+        } catch (e) {
+          console.warn('Invalid secondaryTitleStyle JSON');
+        }
+        break;
    }
  }

@@ -161,6 +173,8 @@ async function main() {
    titleDisplayMode: options.titleDisplayMode || 'short',
    subtitleStyle: options.subtitleStyle,
    titleStyle: options.titleStyle,
+    secondaryTitle: options.secondaryTitle,
+    secondaryTitleStyle: options.secondaryTitleStyle,
    enableSubtitles: options.enableSubtitles !== false,
    width: videoWidth,
    height: videoHeight,
--- a/remotion/src/Root.tsx
+++ b/remotion/src/Root.tsx
@@ -25,9 +25,11 @@ export const RemotionRoot: React.FC = () => {
          audioSrc: undefined,
          captions: undefined,
          title: undefined,
+          secondaryTitle: undefined,
          titleDuration: 4,
          titleDisplayMode: 'short',
          enableSubtitles: true,
+          secondaryTitleStyle: undefined,
          width: 1080,
          height: 1920,
        }}
--- a/remotion/src/Video.tsx
+++ b/remotion/src/Video.tsx
@@ -10,11 +10,13 @@ export interface VideoProps {
  audioSrc?: string;
  captions?: CaptionsData;
  title?: string;
+  secondaryTitle?: string;
  titleDuration?: number;
  titleDisplayMode?: 'short' | 'persistent';
  enableSubtitles?: boolean;
  subtitleStyle?: SubtitleStyle;
  titleStyle?: TitleStyle;
+  secondaryTitleStyle?: TitleStyle;
  width?: number;
  height?: number;
 }
@@ -28,11 +30,13 @@ export const Video: React.FC<VideoProps> = ({
  audioSrc,
  captions,
  title,
+  secondaryTitle,
  titleDuration = 4,
  titleDisplayMode = 'short',
  enableSubtitles = true,
  subtitleStyle,
  titleStyle,
+  secondaryTitleStyle,
 }) => {
  return (
    <AbsoluteFill style={{ backgroundColor: 'black' }}>
@@ -45,8 +49,15 @@ export const Video: React.FC<VideoProps> = ({
      )}

      {/* 顶层：标题 */}
-      {title && (
-        <Title title={title} duration={titleDuration} displayMode={titleDisplayMode} style={titleStyle} />
+      {(title || secondaryTitle) && (
+        <Title
+          title={title || ''}
+          secondaryTitle={secondaryTitle}
+          duration={titleDuration}
+          displayMode={titleDisplayMode}
+          style={titleStyle}
+          secondaryTitleStyle={secondaryTitleStyle}
+        />
      )}
    </AbsoluteFill>
  );
--- a/remotion/src/components/Title.tsx
+++ b/remotion/src/components/Title.tsx
@@ -25,10 +25,12 @@ export interface TitleStyle {

 interface TitleProps {
  title: string;
+  secondaryTitle?: string;
  duration?: number; // 标题显示时长（秒）
  displayMode?: 'short' | 'persistent'; // 短暂显示或常驻显示
  fadeOutStart?: number; // 开始淡出的时间（秒）
  style?: TitleStyle;
+  secondaryTitleStyle?: TitleStyle;
 }

 /**
@@ -48,17 +50,19 @@ const buildTextShadow = (color: string, size: number) => {
    `${size}px -${size}px 0 ${color}`,
    `-${size}px ${size}px 0 ${color}`,
    `${size}px ${size}px 0 ${color}`,
-    `0 0 ${size * 4}px rgba(0,0,0,0.9)`,
-    `0 4px 8px rgba(0,0,0,0.6)`
+    `0 0 ${size * 2}px rgba(0,0,0,0.5)`,
+    `0 2px 4px rgba(0,0,0,0.3)`
  ].join(',');
 };

 export const Title: React.FC<TitleProps> = ({
  title,
+  secondaryTitle,
  duration = 4,
  displayMode = 'short',
  fadeOutStart,
  style,
+  secondaryTitleStyle,
 }) => {
  const frame = useCurrentFrame();
  const { fps, width } = useVideoConfig();
@@ -130,9 +134,32 @@ export const Title: React.FC<TitleProps> = ({
    ? `'${fontFamilyName}'`
    : '"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif';

+  // 副标题样式
+  const stStyle = secondaryTitleStyle || style;
+  const stFontFile = secondaryTitleStyle?.font_file ?? style?.font_file;
+  const stFontFamily = secondaryTitleStyle?.font_family ?? style?.font_family;
+  const stBaseFontSize = stStyle?.font_size ?? 48;
+  const stBaseStrokeSize = stStyle?.stroke_size ?? 3;
+  const stBaseLetterSpacing = stStyle?.letter_spacing ?? 2;
+  const stBaseTopMargin = secondaryTitleStyle?.top_margin;
+  const stFontSize = Math.max(24, Math.round(stBaseFontSize * responsiveScale));
+  const stColor = stStyle?.color ?? '#FFFFFF';
+  const stStrokeColor = stStyle?.stroke_color ?? '#000000';
+  const stStrokeSize = Math.max(1, Math.round(stBaseStrokeSize * responsiveScale));
+  const stLetterSpacing = Math.max(0, stBaseLetterSpacing * responsiveScale);
+  const stFontWeight = stStyle?.font_weight ?? 700;
+  const stFontFamilyName = stFontFamily || 'SecondaryTitleFont';
+  const stFontFamilyCss = stFontFile
+    ? `'${stFontFamilyName}'`
+    : '"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif';
+  const stMarginTop = typeof stBaseTopMargin === 'number'
+    ? Math.max(0, Math.round(stBaseTopMargin * responsiveScale))
+    : Math.round(12 * responsiveScale);
+
  return (
    <AbsoluteFill
      style={{
+        flexDirection: 'column',
        justifyContent: 'flex-start',
        alignItems: 'center',
        paddingTop: typeof topMargin === 'number' ? `${topMargin}px` : '6%',
@@ -149,6 +176,16 @@ export const Title: React.FC<TitleProps> = ({
          }
        `}</style>
      )}
+      {secondaryTitle && stFontFile && stFontFile !== fontFile && (
+        <style>{`
+          @font-face {
+            font-family: '${stFontFamilyName}';
+            src: url('${staticFile(stFontFile)}') format('${getFontFormat(stFontFile)}');
+            font-weight: 400;
+            font-style: normal;
+          }
+        `}</style>
+      )}
      <h1
        style={{
          transform: `translateY(${translateY}px)`,
@@ -171,6 +208,31 @@ export const Title: React.FC<TitleProps> = ({
      >
        {title}
      </h1>
+      {secondaryTitle && (
+        <h2
+          style={{
+            transform: `translateY(${translateY}px)`,
+            textAlign: 'center',
+            color: stColor,
+            fontSize: `${stFontSize}px`,
+            fontWeight: stFontWeight,
+            fontFamily: stFontFile && stFontFile !== fontFile ? stFontFamilyCss : fontFamilyCss,
+            textShadow: buildTextShadow(stStrokeColor, stStrokeSize),
+            margin: 0,
+            marginTop: `${stMarginTop}px`,
+            width: '100%',
+            boxSizing: 'border-box',
+            padding: '0 5%',
+            lineHeight: 1.3,
+            whiteSpace: 'normal',
+            wordBreak: 'break-word',
+            overflowWrap: 'anywhere',
+            letterSpacing: `${stLetterSpacing}px`,
+          }}
+        >
+          {secondaryTitle}
+        </h2>
+      )}
    </AbsoluteFill>
  );
 };