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Package the finished edit for each platform — Reels/TikTok/Shorts (9:16), feed (1:1), YouTube (16:9) — with the right aspect, safe areas, duration, and captions, then export from Kaestral.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Master motion-designer playbook for composing premium films with compose_motion — the decision process, optical composition, rhythm, restraint, transition craft, the physics of premium motion, worked examples with the reasoning exposed, and the failure modes to avoid. Read this BEFORE composing any motion piece (launch film, product reel, title sequence, brand sting).
Cut and animate to the music — get beats/onsets with analyze_audio, then land cuts and zoom/scale punches on the beat.
Plan and place B-roll cutaways over an A-roll talking track — from the media library or generated (BYOK).
The non-negotiable way to work — build every edit ON the Kaestral timeline via MCP tools so the user watches it happen, and render only with Kaestral's own Export. Read this before any editing task.
Apply modern short-form caption looks — word-pop, karaoke highlight, bold-boxed, typewriter — sized and placed for 9:16.
Give a clip or project a cohesive designed look — extract the palette, build a color grade, and choose on-brand type and captions.
| name | Platform delivery |
| description | Package the finished edit for each platform — Reels/TikTok/Shorts (9:16), feed (1:1), YouTube (16:9) — with the right aspect, safe areas, duration, and captions, then export from Kaestral. |
Follow the build-in-kaestral house rule. This skill takes a FINISHED edit and delivers a version tuned for a specific platform. Each platform has different rules; match them, then export.
Ask which platform(s) the user wants. Common specs:
| Platform | Aspect | Ideal length | Notes |
|---|---|---|---|
| TikTok / Reels / Shorts | 9:16 | 15–60s (hook in 3s) | captions on; keep key content out of the top ~12% (handle) and bottom ~18% (caption bar / CTA) |
| Instagram feed | 1:1 or 4:5 | ≤ 60s | subject centered; text safe from the crop |
| YouTube | 16:9 | any | title card + thumbnail-worthy opening frame |
| YouTube Shorts | 9:16 | ≤ 60s | same as Reels |
set_project_settings with the target aspectRatio (9:16 / 1:1 / 16:9) and quality: "1080p".apply_layout full + fill (center-crop), or set_clip_properties scale/position. Use see_video to check the subject actually sits inside the safe area after the crop.remove_words (filler) + ripple_delete_ranges (pauses/tangents) rather than a hard chop — keep the story intact.add_captions, word-accurate). Keep them inside the safe area.apply_color / a title from generate_title. Match the palette (extract_palette).export_project(mode:"video") renders the current timeline. To deliver multiple platforms, do them in sequence: set 9:16 → export → set 1:1 → re-fit → export, etc. Tell the user each file as it's produced.List each platform version you produced, the aspect/length, and anything that needed a re-fit (e.g. a landscape shot cropped to 9:16). Never leave key content under the platform UI zones.