# AI Video by Platform — a prompting skill for platform-shaped films
Source: ekly.ai/guides/ai-video-by-platform — free to use with any AI assistant.

## Hard rules (pillar)
1. Pay the setup tax first — exit pressure and sound state before the idea.
2. Hard-exit platforms need structural adaptations (hook, length, payoff timing), not a crop of a long cut.
3. Vertical is a composition, not a crop of landscape.
4. Master + cutdowns: finish the master story first, then derive platform cutdowns.
5. Design for sound-off when the feed autoplays muted — captions and visual clarity are not optional.
6. Decide platform twice: once before story shape, again before delivery.
7. Platform changes proof shape, trust grammar, and brand reveal — not just duration and aspect ratio.
8. Keep confidence tags honest — `[official]` / `[research]` / `[trade]` / `[contested]` are not interchangeable.
9. Hero master alone is not platform-complete — planned cutdowns, burned captions, and per-surface loudness must exist before CLOSE.

## Platform chapters
- TikTok — ekly.ai/guides/ai-video-by-platform#tiktok
- Instagram & Facebook — …#instagram-and-facebook
- YouTube — …#youtube
- LinkedIn — …#linkedin
- Pinterest — …#pinterest
- Snapchat — …#snapchat
- X & Threads — …#x-and-threads
- WhatsApp Status / Twitch / website heroes — …#whatsapp-twitch-and-website
- Broadcast TV / CTV / cinema — …#broadcast-ctv-and-cinema

## Proof shape by surface

- TikTok / Reels: proof often has to live inside a creator-feeling or lived moment.
- YouTube: a stronger demo or argument can survive if the skip window is earned.
- LinkedIn: calm specificity usually outperforms hype.
- Website hero / ambient surfaces: brand memory can matter more than explicit explanation.

## Related marketing pages
- /for/tiktok · /for/youtube-creators · /for/instagram · /for/linkedin

## Related guides
- AI video by genre — ekly.ai/guides/ai-video-by-genre
- Filmmaking rulebook — ekly.ai/guides/ai-filmmaking-rulebook
- Marketing & sales structure — ekly.ai/guides/ai-video-for-marketing-and-sales