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Publish Facebook Reels from a video URL with a webhook and Graph API

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Created by: Wolfgang Renner || naviqo
Wolfgang Renner

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Last update 21 hours ago

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Quick Overview

This workflow exposes a webhook that takes a public video URL and caption, uploads the video to a Facebook Page as a Reel via the Facebook Graph API’s three-phase upload, and responds with the created Reel’s video ID and link.

How it works

  1. Receives a POST webhook request containing video_url, caption, and optional video_state plus scheduled_publish_time.
  2. Starts a Facebook Reels upload session on the target Facebook Page using the Facebook Graph API.
  3. Instructs Facebook’s upload service to pull the video directly from the provided URL.
  4. Waits briefly for Facebook to process the uploaded video.
  5. Finishes the upload by setting the caption and creating the Reel as a draft, scheduled post, or published post.
  6. Returns the new video_id and a https://www.facebook.com/reel/<video_id> link in the webhook response.

Setup

  1. Create a Meta app and generate a Facebook Page access token with the required permissions for publishing Reels.
  2. Add an n8n HTTP Header Auth credential that sends Authorization: Bearer <PAGE_ACCESS_TOKEN> and use it for all Facebook HTTP requests.
  3. Replace YOUR_FACEBOOK_PAGE_ID with your Facebook Page ID.
  4. Call the webhook URL with JSON including a publicly reachable video_url, optional caption, and optional video_state (DRAFT, SCHEDULED, or PUBLISHED) plus scheduled_publish_time when scheduling.