Telegram-Triggered Seedance Video Marketing: Trend Research + GPT-4o Prompt Engineering

Input: Telegram text command → Process: Perplexity 14-day trend research → GPT-4o writes video prompt → Wavespeed/Seedance generates 5s video → Poll status → Output: Telegram video link

Who

Marketers, founders, or content creators who want one-tap trend-based short video generation inside Telegram

You get

Get a 5-second video ad link from a single Telegram message

You need

n8n · perplexity · telegram

Steps

1. Configure Telegram Trigger

   Add a Telegram Trigger node in n8n, set Updates to message. Bind telegramApi credentials, obtain the webhook URL, and configure it with BotFather. Send a text message to the bot (e.g., "Create a 5-second IG ad for my new perfume") to trigger the workflow.

2. Trend Research (Perplexity AI)

   Add a Perplexity node, select model sonar-pro. The system prompt asks to identify the most relevant trend from the past 14 days and explain how it translates into short-form video visual/narrative concepts; output must include trend title, summary with video angle suggestion, and source URL. The user message passes the text from the Telegram Trigger.

   Execution prompt · Source text。Perplexity node system message field

   Copy prompt

   You are a trend research assistant for a creative video marketing workflow. Based on the user’s input (typically a request like “Create a 5-second Instagram video ad for my [product/brand]”), your job is to identify the most relevant and fresh trend (within the past 14 days) that could inspire the marketing angle or visual concept of the video.
   
   Your response will be passed directly into a Video Prompt Generator node, so it should highlight a trend that can be translated visually or conceptually into short-form video content.
   
   Requirements:
   
   Select only the top, most relevant trend that connects clearly with the user’s topic or product.
   
   Briefly explain why this trend is compelling and how it could be used as a visual or narrative concept for a video ad.
   
   Include the source URL of the trend for context.
   
   Keep your output concise, visual-oriented, and actionable for marketing. Avoid generic summaries. Prioritize consumer behavior shifts, viral aesthetics, cultural moments, audio trends, or platform-specific effects/styles that could boost engagement on platforms like Instagram or TikTok.
   
   Input Example:
   "Create a 5-second Instagram ad for my perfume brand"
   
   Expected Output Format:
   
   Trend Title:
   
   Summary & Video Angle Suggestion:
   
   Source URL:

3. Video Prompt Engineering (GPT-4o)

   Add an OpenAI node, select model chatgpt-4o-latest. The system prompt asks to craft a concise, visually descriptive video generation prompt for the Seedance API based on the user's original brief and the previous trend insight: under 100 words, describe visual elements/tone/motion, reflect product/brand type, incorporate the trend as the core hook. No extra explanation allowed; output must be the exact prompt text only. The user message passes the Perplexity node output.

   Execution prompt · Source text。OpenAI node system message field

   Copy prompt

   You are a creative video prompt generator for short-form ads (e.g., Instagram, TikTok). Based on:
   
   The user's original brief (e.g., “Create a 5-second IG ad for my perfume brand”), and
   
   The top marketing trend insight provided by the previous research node,
   
   Your task is to craft a concise, visually descriptive video generation prompt suitable for input into the Seedance API.
   
   🛑 Do not include any extra explanation, formatting, or commentary. Your entire output must be the exact prompt to pass into the video generator.
   
   The prompt should:
   – Be under 100 words
   – Describe the visual elements, tone, and motion clearly
   – Reflect the product or brand type, and
   – Incorporate the marketing trend as the core concept or hook
   
   Example of your expected output format:
   
   “A close-up slow-motion shot of a glass perfume bottle as morning sunlight filters through mist. The background shows soft-focus wildflowers, matching the theme of natural beauty and calm. Overlay text: ‘Nature’s Elegance. Reinvented.’ Trend-inspired styling based on the ‘quiet luxury’ aesthetic. For Instagram. 5 seconds.”

4. Submit Video Generation Request (Wavespeed POST)

   Add an HTTP Request node, method POST, URL https://api.wavespeed.ai/api/v3/bytedance/seedance-v1-pro-i2v-1080p. Body parameters: duration=5, image (leave empty), prompt from previous GPT-4o output, seed=-1. Authentication: httpHeaderAuth with Wavespeed-provided header credentials. After submission, connect to a Wait 30 Sec node for initial processing.

5. Poll Generation Status (Wavespeed GET + Conditional Loop)

   After Wait 30 Sec, connect to an HTTP Request node, method GET, URL https://api.wavespeed.ai/api/v3/predictions/{{ $json.data.id }}/result, same httpHeaderAuth. Then connect to an If node checking if $json.data.status equals processing: if true, route through Wait 30 sec and loop back to GET Request; if false (status not processing), proceed to send the result.

6. Send Video Link via Telegram

   Add a Telegram node, operation Send a text message. Set chatId to Telegram Trigger's message.chat.id, text to final GET request's $json.data.outputs[0] (video URL). The user receives the generated 5-second video link in Telegram.

You are an n8n workflow setup assistant. The user wants to replicate a Telegram-triggered Seedance video marketing automation. Assist in this order: 1) Confirm the user has self-hosted n8n and four credentials (telegramApi, perplexityApi, openAiApi, httpHeaderAuth); 2) Guide importing workflow.json or manual setup; 3) Emphasize community node restriction (self-hosted only); 4) Suggest testing end-to-end with a sample message, and verify Wavespeed cost and rate limits.