platform-format-adapter

name	platform-format-adapter
description	Use when preparing or validating local cover, video, caption, and metadata variants for multiple publishing platforms without auto-publishing.

Platform Format Adapter

Purpose

Map approved episode assets into local platform packages. This skill is the project-level counterpart to one-design-to-many-platform resize patterns such as Canva social resize, but it stays local and deterministic unless a separate explicit tool task is requested.

Inputs

• platform_profiles/*.yaml
• episodes/{paper_id}/video_script/FRAME.md
• Approved cover assets.
• Rendered video or HTML draft status.
• Captions.
• Approved title, description, hashtags, and language mode.

Outputs

• episodes/{paper_id}/publish/platform_manifest.json
• Per-platform review notes for cover, video, captions, and metadata.
• A partial failure report when one platform cannot be packaged but others can still be checked.

Required Variants

All variants must be derived from platform_profiles/*.yaml; the examples below describe the current baseline, not a substitute for reading the profile:

• douyin.zh-CN and youtube-shorts.en-US: vertical 1080x1920.
• xiaohongshu.zh-CN: note-video 1080x1440.
• tiktok.en-US: vertical 1080x1920 when this profile is present.
• bilibili.zh-CN and youtube-long.en-US: landscape 1920x1080.
• x.en-US: square 1080x1080.

Manifest Fields

Each manifest entry must include:

• platform
• language mode
• cover path
• video path
• caption path
• title
• description
• hashtags
• safe-area note
• status

Rules

• Preserve the safe90 cover rule for vertical short-video covers unless a platform profile explicitly overrides it.
• Use exact sizes from platform_profiles/*.yaml; do not guess dimensions.
• Treat missing cover, video, captions, or metadata as partial failure, not success.
• Continue validating other variants after one platform fails and report partial failure clearly.
• If a requested platform has no profile, report missing_profile for that platform and keep validating the remaining platforms.

Forbidden Actions

• Do not auto-publish.
• Do not upload media.
• Do not invent metadata that was not derived from approved script, blog, or platform profile inputs.
• Do not treat a missing cover/video/caption as success.
• Do not run provider, LLM, TTS, HyperFrames, Manim, or network calls.