Answer: Use the Postifys n8n node → Instagram → type
REEL → professional account id → reachable media URL (proxy for Drive).What this means in a real publishing workflow
Instagram Reel publishing requires a connected professional account and a video that Meta can fetch and process. A browser-playable URL can still fail if it redirects to HTML, requires cookies, or uses an unsupported codec.
Recommended implementation
- Select the intended Instagram professional account.
- Send VIDEO or REEL with a direct, publicly reachable media URL.
- Keep the caption within the platform limit and map collaborators only when supported.
- Track both container processing and final publication.
How to verify the fix
H.264 video, AAC audio, even dimensions, yuv420p pixel format, and MP4 faststart provide the safest path. Postifys may remux or convert risky media before publishing.
Operational check: Test with one item, confirm the final destination and Postifys history state, and only then enable the recurring workflow. Keep the returned Postifys ID beside the source row so every result remains traceable.
Related Postifys resources
API documentation · Error reference · n8n automation guide · Safe retry guide · Compatibility matrix