Multi-platform auto-poster template

The problem

Publishing to multiple platforms means writing captions, tags, and blog posts for each one manually. It's repetitive, time-consuming, and leads to inconsistency across channels. The work itself is not hard — it is the same thing over and over, on a schedule that does not forgive a missed week.

How it works

1. Watches a Google Drive folder for new raw video files.
2. Extracts the audio with FFmpeg and transcribes it locally using Whisper.
3. Uses Groq to generate platform-specific captions and hashtags from the transcript.
4. Uploads the video to YouTube, sets the thumbnail, and schedules it natively.
5. Uploads the video to Facebook and schedules it natively to the correct Page.
6. NVIDIA Nemotron writes a full blog post from the transcript.
7. Cloudflare Flux creates a cinematic hero image for the post.
8. A strict SEO gate validates word count, headings, focus keywords, and banned AI phrases before anything is scheduled.
9. Creates a Blogger draft with the post and the YouTube embed, and schedules it.

Read the full story in the case study, or see the system on the Projects page.

What you get

• The n8n workflow file, importable as JSON.
• The Google Sheet template used to log every run and track statuses.
• The prompt templates for caption generation and for the blog post.
• A written setup guide for the YouTube, Facebook and Blogger API connections.
• A redacted walkthrough of a full run, from Drive drop to scheduled post.

Requirements

• A running n8n instance (cloud or self-hosted).
• A Google Drive folder the workflow can watch.
• A YouTube channel, a Facebook Page, and a Blogger blog, each with API access enabled.
• Whisper installed for local transcription, or a compatible transcription API.
• FFmpeg installed on the machine running n8n.
• Optional: a Groq API key for caption generation, and a Cloudflare account for the blog hero images.

Redacted samples