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Diagnose an Unsupported Media Format

Diagnose unsupported image/video formats in Postifys publishes by matching platform type fields and re-encoding assets.

Reviewed: 2026-07-24

Answer: Confirm the endpoint type matches the file (IMAGE vs REEL/VIDEO), re-encode to a common MP4/H.264 or standard image format, and ensure the URL returns the real file (not an HTML login page).

Technical reviewer: Postifys engineering (docs sourced from live API behavior). Contact info@postifys.com.