n8n Google Drive Video to PostWire: TikTok, YouTube & Instagram

Automatically turn Google Drive videos into TikTok, YouTube & Instagram posts—with one workflow

This n8n workflow watches a selected Google Drive folder for new video files, uploads them to PostWire to create a public media URL, generates platform-specific caption drafts, and then publishes to TikTok, YouTube, and Instagram automatically.

What this workflow does

• Monitors your Google Drive folder: runs every minute and triggers when a new file is created.
• Validates the file: downloads the new file as binary data, checks the file’s MIME type, and stops if it isn’t a video.
• Uploads to PostWire: requests an upload URL, uploads the video bytes, finalizes the upload, and retrieves a public PostWire media URL.
• Creates captions per platform: sends the video title and PostWire media URL to PostWire to generate caption drafts for TikTok, YouTube, and Instagram.
• Publishes to all three platforms: posts using the per-platform drafts and the public media URL via PostWire.

Use cases

• Social teams upload content to a shared Google Drive folder and publish across TikTok, YouTube, and Instagram without manual downloading/re-uploading.
• Automation engineers build a repeatable pipeline for outbound video publishing using n8n + PostWire.
• SaaS operators streamline content distribution for brands by centralizing media intake in Google Drive.

Technical details

• Trigger/Nodes: Google Drive trigger (checks every minute), Google Drive download, if (MIME type check), and supporting nodes (e.g., http request, no op, sticky note).
• PostWire integration: HTTP Request nodes using an Authorization Bearer header and PostWire’s upload + caption + publishing steps.
• Setup requirements: a PostWire account (free plan covers one brand and 30 posts/month, no card required) plus connected TikTok/YouTube/Instagram profiles in the PostWire dashboard.

Result: faster, consistent, multi-platform video publishing from a single Google Drive entry point.