$npx -y skills add Varnan-Tech/opendirectory --skill vid-sizzle-reelGenerates a high-energy sizzle reel or hype video (MP4) from brand assets and key messages. Fast-paced montage format with dynamic cuts, bold text overlays, and optional music. 4-section structure: Cold Open, Build, Peak, Land. 4 tone presets. Beat-sync cuts when music is provide
| 1 | # vid-sizzle-reel |
| 2 | |
| 3 | Generates a high-energy sizzle reel or hype video from brand assets and key messages. |
| 4 | Pipeline: HyperFrames HTML composition (GSAP timelines) → headless Chromium → FFmpeg H.264 MP4. |
| 5 | No Runway. No Pika. No AI video APIs. Zero runtime cost beyond Node.js + FFmpeg. |
| 6 | |
| 7 | **Differentiation from `vid-product-launch`:** |
| 8 | - `vid-product-launch` tells a narrative story — one earned reveal, five sections, tension arc |
| 9 | - `vid-sizzle-reel` creates energy and excitement — fast cuts, music-first, no single story beat |
| 10 | |
| 11 | --- |
| 12 | |
| 13 | ## Critical Rules (read before every generation) |
| 14 | |
| 15 | 1. **Write the key messages yourself — or ask the user to write them.** These are the exact phrases that appear on screen. "AI will figure it out" produces filler. 3-5 sharp lines is the entire content of a sizzle reel. |
| 16 | |
| 17 | 2. **Brand name appears ONLY in the Land section.** Cold Open and Build create tension without naming the brand. The Land section is the payoff. |
| 18 | |
| 19 | 3. **Declare the rhythm pattern in a comment at the top of the script before writing any HTML.** Format: `// RHYTHM: flash-sequence | Cold[0-5s]: stat | Build[5-40s]: msg(1.5s)|flash|... | Peak[40-55s]: ... | Land[55-60s]: logo+CTA`. Every timing decision checks against this. |
| 20 | |
| 21 | 4. **Build end-state layout in CSS first — no GSAP yet.** Position every element at its most-visible moment in static CSS. Then add GSAP entrances with `gsap.from()` and exits with `gsap.to()`. Never position at animated start state. |
| 22 | |
| 23 | 5. **`class="clip"` on every timed element.** Required by HyperFrames. Without it, the element is invisible to the player. |
| 24 | |
| 25 | 6. **`data-start`, `data-duration`, `data-track-index` on every clip.** No exceptions. Same-track clips cannot overlap — use different track indices. |
| 26 | |
| 27 | 7. **No `Math.random()`.** HyperFrames requires deterministic compositions. Use seeded PRNG (mulberry32) for any pseudo-random values. |
| 28 | |
| 29 | 8. **All GSAP timelines start `{ paused: true }` and register to `window.__timelines["comp-id"]`.** The HyperFrames player controls playback — never call `tl.play()`. |
| 30 | |
| 31 | 9. **Never `position: absolute` on `.scene-content` containers.** Use `width:100%; height:100%; padding:Npx; display:flex`. Reserve `position:absolute` for decorative elements only. |
| 32 | |
| 33 | 10. **Music: separate `<audio>` element with `data-track-index`.** Video must be `muted playsinline`. Never put audio in a `<video>` element. |
| 34 | |
| 35 | 11. **Read `references/cut-patterns.md` AND `references/tone-presets.md` before generating any HTML.** |
| 36 | |
| 37 | 12. **Never dump HTML in chat.** Save to file. Show summary only. |
| 38 | |
| 39 | --- |
| 40 | |
| 41 | ## Step 1: Intake |
| 42 | |
| 43 | **Required:** |
| 44 | - `key_messages` — 3-5 punchy lines to flash on screen (user must write these) |
| 45 | |
| 46 | **Optional parameters and defaults:** |
| 47 | |
| 48 | | Parameter | Default | Description | |
| 49 | |---|---|---| |
| 50 | | brand_assets | none | Logo URL/path, brand colors (hex), key screenshots | |
| 51 | | tone | energetic | energetic / cinematic / emotional / professional | |
| 52 | | music | none | File path, or BPM/genre string (e.g. "128bpm electronic") | |
| 53 | | duration | 60 | 30 / 60 / 90 seconds | |
| 54 | | aspect_ratio | 9:16 | 9:16 (1080x1920) / 16:9 (1920x1080) | |
| 55 | | cut_style | auto | fast (1-2s) / cinematic (3-5s) — auto derives from tone | |
| 56 | | end_card | auto | Logo + tagline + CTA URL for Land section | |
| 57 | |
| 58 | `cut_style` auto-defaults: energetic → `fast`; professional → `fast` (2s); cinematic → `cinematic`; emotional → `mixed` |
| 59 | |
| 60 | **If `key_messages` is missing, ask exactly:** |
| 61 | |
| 62 | > "To generate the sizzle reel, I need your key messages — the exact phrases that will flash on screen. Give me 3-5 punchy lines. These are the most important thing you're writing for this video. |
| 63 | > |
| 64 | > Examples: 'Used by 500+ growth teams' / 'From days to minutes' / 'Works with Claude, Codex, Gemini' |
| 65 | > |
| 66 | > Also useful: tone (energetic/cinematic/emotional/professional), duration (30/60/90s), any brand colors or logo URL." |
| 67 | |
| 68 | If key_messages are present → proceed to Step 2 immediately. |
| 69 | |
| 70 | --- |
| 71 | |
| 72 | ## Step 2: Install HyperFrames |
| 73 | |
| 74 | Install HyperFrames skills (first time only — skip if already installed): |
| 75 | |
| 76 | ```bash |
| 77 | npx skills add heygen-com/hyperframes |
| 78 | ``` |
| 79 | |
| 80 | Verify environment: |
| 81 | ```bash |
| 82 | node --version # must be >= 22 |
| 83 | ffmpeg -version # must be present |
| 84 | ``` |
| 85 | |
| 86 | Scaffold the project: |
| 87 | ```bash |
| 88 | npx hyperframes init sizzle-[slug] --example kinetic-type --non-interactive |
| 89 | cd sizzle-[slug] |
| 90 | ``` |
| 91 | |
| 92 | Slug: kebab-case from end_card brand name or first key_message, max 25 chars. |
| 93 | |
| 94 | -- |