> ## Documentation Index
> Fetch the complete documentation index at: https://docs.happycapy.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Generate a short video ad
> Use Happycapy to create a vertical MP4 ad, cover image, and short script from a product brief.
export function ConversationPreview({url, label, linkLabel = "Open full conversation", fit = "content"}) {
const isContentFit = fit === "content";
return ;
}
export function LivePreview({url, label, linkLabel = "Open live result", fit = "content"}) {
const isContentFit = fit === "content";
return ;
}
Use this when you want a finished short video, not only a script or storyboard. Happycapy can plan the concept, choose a video model, generate the MP4, create a cover image, and verify the output files.
## Example result
## What you can make
* A vertical 9:16 MP4 video ad
* A generated cover image or thumbnail
* A short script and shot list
* A reusable prompt for another product or platform
## What to prepare
* Product or campaign brief
* Target platform and duration
* Mood, scene ideas, and CTA
* Preferred video model when it matters
## Try this prompt
```text theme={null}
Create a complete short video ad for PocketGarden, an app that helps apartment renters grow herbs indoors. Use Seedance 2.0 for the actual video generation. Create an 8-12 second vertical MP4, a cover image, and a short script with shot list. The video should feel warm, optimistic, and apartment-friendly, with a tiny kitchen, herb growth, an app reminder, and a final CTA: "Start your windowsill garden today." Save the outputs as MP4, PNG, and Markdown, then verify that every file exists and is non-empty.
```
### Full conversation
## What Happycapy does
1. Turns the brief into a compact video concept.
2. Confirms the video model and generation settings.
3. Generates the MP4 in the cloud sandbox.
4. Creates a cover image and supporting script.
5. Verifies file size and keeps the full process shareable.
## Review checklist
* Does the first second communicate the hook?
* Is the output actually an MP4, not only a preview?
* Does the aspect ratio match the target platform?
* Are the cover image and script useful for publishing?
* Can the same brief be remixed for another platform?
## Next step
Ask Happycapy to create alternate versions for Reels, TikTok, YouTube Shorts, or a different product offer.