git:20260825.dc9bfc7 to git:20260907.2a8832a

9 added, 1 removed. Audit A to A.

---

name: shortform-viral

description: A short-form viral video style — vertical 9:16, fast hook, authentic handheld creator energy, bright saturated casual look, and a fast cut rhythm. Applies to whatever the user is filming. Trigger on /shortform-viral, "TikTok style", "Reels style", "viral short video", or "UGC creator clip".

---

# Shortform Viral

A **social short-form style**, not a fixed scene. Keep the user's subject exactly as briefed — a product, a moment, people, a place — and shoot it like a creator's phone clip below. The style supplies the *energy*; the user supplies the *what*. Tuned for **Seedance** (the platform's default video model): the prompt follows Seedance's `subject → scene → motion → camera → light → style` ordering.

+ ## Video preview

+ 1. Before generating a video, prepare a few keyframes matching the user's subject, style, and aspect ratio. Reuse suitable supplied or already approved images.

+ 2. Show the actual images through accessible links, briefly describe the intended motion, and ask the user to confirm. End the turn and wait; do not start a video job before confirmation. Revise the preview if requested.

+ 3. After confirmation, generate the video. Use the approved images as first/last frames or references when supported by the selected model; otherwise follow the approved visual direction in the prompt. Reuse existing confirmation for an unchanged preview.

+ Keep the preview message short: the images, a brief motion description, and one confirmation question.

## What this style is

**The essence:** feel like a real person filmed it on their phone and it blew up — **authentic, immediate, high-energy**. The goal is **relatable spontaneity and a fast hook**, not polish. It should look unproduced on purpose.

**Touchstones:** TikTok / Reels creator content, GRWM and day-in-the-life clips, candid travel/lifestyle UGC, run-and-gun phone footage.

**What makes it distinct:** **vertical, handheld, fast, bright**. The opposite of a locked tripod and a slow cinematic grade — its credibility comes from looking casual and real.

## Style dimensions (locked)

- **Visual tone — warm & natural, bright saturated**: punchy daylight, casual phone-camera look, lively color; not a graded "film" look.

- **Camera — handheld raw**: natural handheld movement, slight shake and reframes, follows the action; feels human-held.

- **Editing pace — fast cut**: quick rhythmic cuts; a strong hook in the **first second**. (Seedance can do multi-shot — use it here.)

- **Narrative mode — observational**: candid, in-the-moment; no formal narration.

- **Production type — live action**: real-world phone-grade footage.

- **Emotional tone — playful & fun**: upbeat, joyful, casual energy.

- **Style reference — short-form viral**: authentic creator content built to stop the scroll.

## Prompt construction

Write **one cohesive video prompt in your own words**, adapted to the subject. Hit these beats in Seedance order:

`subject (as briefed) → casual real-world setting → energetic action → handheld camera following it → bright natural light → playful creator vibe`

**Always convey:** vertical 9:16 phone framing · a strong action/hook right away · natural handheld movement · bright saturated casual daylight · playful authentic energy · fast pacing.

**Never:** formal studio/tripod look, slow meditative pacing, cinematic letterbox, heavy color grade, staged stiffness.

Adapt the action and setting to the subject. Put aspect ratio, negatives, and seed in the **params**.

## Generation parameters

- **aspectRatio**: `9:16` (vertical — non-negotiable for this style).

- **resolution & model tier**: pick a tier that supports the resolution — fast tiers cap lower (often `720p`); `1080p` needs a full tier.

- **duration**: `5–8s`; pack a hook + a beat or two of payoff. Multi-shot is welcome.

- **negativePrompt**: `formal studio look, tripod locked frame, cinematic letterbox, slow pacing, heavy color grade, staged, stiff, low resolution`.

- **generateAudio**: **on** — casual ambient/energy helps the authentic feel (swap for trending audio in edit).

- **seed**: mild lever for text-to-video. For look consistency use `firstFrameImageUrl`.

- - **firstFrameImageUrl**: optional here — handheld energy matters more than a locked first frame; use a still anchor only if you need a specific opening look.

+ - **firstFrameImageUrl**: use the approved opening frame when the selected model supports this input.

## How to apply

Shoot the user's subject like a creator would: vertical, in the moment, energetic, bright. If the brief wants a slow, premium, cinematic feel, this is the wrong style — pick a cinematic or product style instead.

## Worked examples

Same casual creator energy; the subject changes.

1. **"unboxing our snack product"** → hands ripping open the pack to camera, quick cuts to a bite and a reaction, vertical, bright kitchen daylight, playful.

2. **"a beach day with friends"** → friends running and laughing toward the water, handheld follow, bright saturated, fast cuts (see reference still / picker thumbnail).

3. **"a coffee shop morning"** → POV walking in, quick cuts of the order and first sip, casual handheld, warm daylight.

4. **"a sneaker drop"** → fast hook on feet stepping into frame, quick spins and angles, vertical, energetic.

## Reference output

| Field | Value |

| --- | --- |

| Picker thumbnail | `https://cdn.vm0.io/artifacts/user_3EWY21Oe3f15kfs3yYmbGgDb3NV/40ab801f-16bc-4e29-8370-6b10cd394e30/thumbnail-shortform-viral.jpg` |

| Reference still — rooftop party (Seedream, seed 51, 9:16) | `https://cdn.vm0.io/artifacts/user_3EWY21Oe3f15kfs3yYmbGgDb3NV/06064f7a-abdb-4284-9562-507d6dce7ed4/image-06064f7a.png` |

| Canonical | vertical 9:16 · handheld · bright saturated · fast cuts · playful creator energy |

> The reference still holds the casual bright-energy look on a different subject (rooftop party vs. beach crew) — the style is subject-invariant.