用 Telegram 触发，GPT-4 + Kling AI 自动生成并多平台发布社交视频

输入 Telegram 文本 → GPT-4 优化视频提示词 → Kling 生成视频 → 合成语音与字幕 → 自动发布到 9 个社交平台

给谁

内容创作者、社交媒体运营、营销人员，具备 n8n 自托管环境

你会得到

发送一条 Telegram 消息，即可自动生成带配音和字幕的短视频，并同步发布到 Instagram、TikTok、YouTube 等 9 个平台

你需要

n8n · telegram · google-sheets · blotato · json2video · cloudinary

步骤

1. 生成视频：从 Telegram 提示词到 Kling 视频

   在 n8n 中配置 Telegram Trigger 节点接收消息，然后用 Code 节点解析消息：去掉 'generate video' 前缀，按第一个逗号分割为 videoPrompt 和 captionIdea。接着使用 AI Agent 节点（GPT-4）将简短提示词扩展为适合 Kling 的详细场景描述，最后通过 HTTP Request 节点调用 Kling API（https://api.piapi.ai/api/v1/task）生成视频。生成后等待约 7 分钟，再查询任务状态获取视频 URL。

   运行提示词 · 来源原文。AI Agent 节点 'Transform Prompt for Kling (GPT-4)' 的 systemMessage 字段

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   =⚙️ System Instructions – AI Agent:
   You are a prompt optimization assistant for Kling AI, a cutting-edge text-to-video generation platform.
   
   🎯 Mission:
   Transform brief user inputs into cinematic, high-quality video prompts rich in sensory details, spatial context, and dynamic motion—perfectly tuned for Kling AI.
   
   ✍️ Instructions:
   Expand short ideas into visually immersive scenes.
   
   Use concrete visual elements: colors, textures, lighting, motion, atmosphere, camera angles.
   
   Keep descriptions concise but vivid, like a scene from a movie script.
   
   Output only the final prompt—no explanations, no formatting tips.
   
   🌟 Examples:
   User Input: “Rainy street at night”
   Final Prompt:
   Neon signs reflect in puddles on a dimly lit city street. Raindrops ripple across a parked motorcycle's chrome. A figure in a trench coat walks past flickering lights as steam rises from a nearby sewer grate. The camera tracks from ground level, capturing water splashing underfoot.
   
   User Input: “Mountain hike”
   Final Prompt:
   A hiker climbs a rugged mountain trail at sunrise, golden light hitting snow-capped peaks in the distance. Wind rustles through pine trees as birds soar overhead. The camera pans slowly from behind, revealing a vast valley below bathed in morning mist.
   
   User Input: “Cozy library”
   Final Prompt:
   A warm library room with wooden shelves lined with old books. Dust floats in the sunbeams streaming through tall windows. A cat naps on a leather armchair while a hand flips through a weathered novel. The camera gently rotates around the room, revealing small glowing lamps.

2. 添加配音：生成脚本、TTS 转语音并合并到视频

   基于上一步解析出的 captionIdea，使用 GPT-4o 生成一段 7 秒左右的配音脚本（约 18-22 词）。然后通过 OpenAI TTS 将脚本转为音频，上传到 Cloudinary，再用 JSON2Video API 将音频与视频合并。合并后等待约 1 分钟，获取带音频的视频 URL。

   运行提示词 · 来源原文。OpenAI 节点 'Generate Voice-Over Script' 的 messages[0].content 字段

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   =Task:
   Craft a short-form voice-over script that perfectly fits a 7-second video duration. The script should align with the following topic:
   
   {{ $('Extract Prompt & Caption').item.json.captionIdea }}
   
   Requirements:
   
   Match the average spoken word count for a 7-second voice-over (approximately 18–22 words, depending on pacing).
   
   The script must be tight, impactful, and written in a natural spoken tone suitable for narration.
   
   No intro text or labels — return only the plain voice-over script with no headers or commentary.
   
   ✅ Example (For Context Only):
   Topic: "Why cold showers boost productivity"
   Generated Output:
   Cold showers shock your system awake, boost focus, and kickstart circulation—training your brain to embrace discomfort.

3. 添加字幕：用 JSON2Video 为视频叠加样式字幕

   等待 30 秒后，调用 JSON2Video API 为带音频的视频添加专业字幕。使用 classic-progressive 样式，字体 Oswald，字号 140，配色为金色文字配深色阴影和边框。提交后等待约 1 分钟渲染，再查询获取最终视频 URL。

4. 保存元数据并通知：生成标题文案、写入表格、Telegram 预览

   使用 GPT-4o 基于配音脚本生成社交文案和 YouTube 风格标题（70 字符以内，无特殊字符）。将原始提示词、视频 URL、标题、描述写入 Google Sheets。然后通过 Telegram 发送最终视频和文案链接，供人工确认或复用。

   运行提示词 · 来源原文。OpenAI 节点 'Generate Social Caption from Voiceover' 的 messages[0].content 字段

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   =📲 Prompt: Caption Generator for Voiceover-Based Social Posts
   Your Role:
   Create a concise and engaging social media caption that builds directly on the voiceover script below:
   {{ $('Generate Voice-Over Script').item.json.message.content }}
   
   🧠 Caption Guidelines:
   Keep it short, compelling, and value-driven.
   
   Avoid generic motivational fluff — focus on real, actionable insight or highlight a problem/solution pattern.
   
   
   Structure:
   
   One sentence per line.
   
   Note: Do not use this character: " in the result.
   Return a single short paragraph with no line breaks and no special characters.
   Note: Do not use this character: " in the result.

   运行提示词 · 来源原文。OpenAI 节点 'Generate YouTube-Style Title' 的 messages[0].content 字段

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   =Act as a YouTube Title Expert.
   Based on the following video description:
   {{ $('Generate Voice-Over Script').item.json.message.content }}
   Generate a short, punchy, and curiosity-driven YouTube video title that makes people want to click.
   Make it feel urgent, valuable, or surprising — and avoid generic or boring phrases.
   Keep it under 70 characters. Return only the title, no explanations.
   Note: The title must be free of special characters and the character ". Return only a plain text title.

   运行提示词 · 来源原文。Telegram 节点 'Send Caption Link via Telegram' 的 text 字段

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   ={{ $('Save Video Metadata to Google Sheets').item.json.DESCRIPTION }}
   
   Link here : {{ $('Save Video Metadata to Google Sheets').item.json['URL VIDEO'] }}

5. 多平台自动发布：通过 Blotato 分发到 9 个社交平台

   在 Set 节点中配置各平台账号 ID（Instagram、YouTube、TikTok、Facebook、Threads、Twitter/X、LinkedIn、Bluesky、Pinterest），先将视频上传到 Blotato 获取媒体 URL，然后并行调用 Blotato API 发布到所有平台。注意：Bluesky 和 Pinterest 的 mediaUrls 在模板中使用了占位图片 URL，实际使用时应替换为真实视频 URL。

6. 前置配置与凭证

   1. 在 n8n 中连接 Telegram Bot 到 Telegram Trigger 节点；2. 为所有 GPT 节点添加 OpenAI API Key；3. 在 Generate Video 节点配置 Kling API 访问（通过 piapi.ai）；4. 连接 Cloudinary 账号用于音频上传；5. 配置 JSON2Video 用于音视频合并和字幕；6. 设置 Google Sheets 并记录 spreadsheet ID；7. 连接 Blotato API Key 并填入各平台账号 ID；8. 测试消息格式：generate video A robot exploring Mars, Why AI will reshape humanity。注意：此工作流使用社区节点，仅适用于自托管 n8n。

你正在搭建一个 n8n 工作流：通过 Telegram 消息触发，用 GPT-4 和 Kling AI 自动生成带配音、字幕的短视频，并自动发布到 9 个社交平台。请先确认你已具备自托管 n8n 环境，然后按以下顺序配置凭证：Telegram Bot → OpenAI → Kling (piapi.ai) → Cloudinary → JSON2Video → Google Sheets OAuth2 → Blotato。配置完成后导入 workflow.json，替换所有 credential-id 为实际凭证，测试消息格式为 'generate video <描述>, <主题>'。