Automate AI Videos for TikTok and Instagram
· By AI Compare
From idea to published short video: prompt writing, AI generation, approval and posting.
Use cases
What you will build
A content pipeline that turns an idea into a short AI-generated video and publishes it to TikTok, Instagram Reels and YouTube Shorts. You type an idea (or add it to a sheet); AI writes the prompt and caption, a video model generates the clip, and a publishing tool posts it.
This is based on n8n templates such as "Generate and publish AI videos with Sora 2, Veo 3.1, Gemini and Blotato" and "Generating AI videos with Veo3 and distributing with Blotato".
The building blocks
| Stage | Options | Notes |
|---|---|---|
| Idea input | Chat Trigger, Telegram, Google Sheets | Sheets works well as a content calendar |
| Script and prompt | Gemini, GPT, Claude | Expands a one-line idea into a detailed video prompt |
| Video generation | OpenAI Sora 2, Google Veo 3/3.1 (via Google or resellers such as Wavespeed, fal.ai, kie.ai) | Paid per video or per second; availability varies by region |
| Captions | LLM | Platform-specific captions and hashtags |
| Publishing | Blotato, platform APIs, or a social media scheduler | One API to post to many platforms |
| Review | Telegram or Slack preview | Approve before publishing |
Workflow structure
- Trigger: new row in a Google Sheet with idea, style and duration.
- LLM Chain: write a detailed visual prompt and a short script.
- HTTP Request: submit the generation job to the video API.
- Wait + HTTP Request loop: poll the job status every 30–60 seconds until the video is ready (generation can take minutes).
- HTTP Request: download the MP4.
- LLM: write captions for each platform.
- Telegram/Slack: send a preview for approval (use n8n's send-and-wait so the workflow pauses until you approve).
- Blotato (or another publisher): upload and post to TikTok, Instagram and YouTube.
- Google Sheets: log URLs, cost and status.
Costs and limits
- Video generation is the expensive part: each clip can cost from cents to dollars depending on model, length and resolution.
- Some templates use community nodes that require self-hosted n8n.
- Publishing APIs and schedulers have their own subscriptions.
Quality and policy tips
- Keep a manual approval step; fully automated posting risks low-quality or off-brand content.
- Follow each platform's rules on AI-generated content labels.
- Do not generate real people's likenesses or copyrighted characters.
- Batch: generate several videos once a week, review, then schedule.
