GreatJIN / tools
Tools menu
IN YOUR BROWSER
All tools/Video prompt
18 / AI & VIDEO

Video prompt

A scene you love, a starting point for your own video.

How to use ↓
VIDEO → PROMPT
How to use

Checking free trial availability…

Up to 10 seconds at one frame per second. Three requests per network per day; 30 per day and 300 per month across the site. Resets use UTC. Shared networks share a quota.

01 · Reference video

Seconds or hh:mm:ss · Select 1–60 seconds. These fields override timestamps in the URL.

Fast motion increases processing. Start with a short clip.

02 · Your intended video

Duration and aspect ratio guide the prompt. Check what your generation tool supports.

Advanced · Your Gemini key
Your Gemini key

Your key is used only on this page and is not saved. Get an API key ↗

Analysis model: Gemini 3.5 Flash-Lite. Availability, free quotas and charges depend on your Google project. Check pricing ↗

From scene to prompt

Awaiting analysis

Analyze composition, lighting, camera work and motion, then get an English prompt to paste into your generation tool.

The trial goes through this site to Google. Personal Gemini keys connect directly to Google. OpenRouter mode sends the scene description and instructions to OpenRouter and the selected model provider.

This tool does not generate videos. OpenRouter uses only free models with no paid fallback. Personal Gemini usage is billed to your account. Failed or cancelled requests may count toward usage limits.

QUICK GUIDE

Analyze once, then explore your ideas.

This creates new instructions from a reference scene; it does not recover the original prompt.

  1. 01

    Select a short scene

    Enter a public YouTube URL and start/end times. Private, members-only and restricted videos are not supported.

  2. 02

    Choose a mode

    The trial analyzes YouTube without your own key. Connect OpenRouter to create prompts from a written scene description. Personal Gemini keys are available in advanced settings.

  3. 03

    Revise and copy

    Change the setting, duration, aspect ratio or generation tool for the same clip to rewrite from analysis text without resending the video. A new interval needs new analysis.

OBSERVE → ADAPT → CREATE

Separate motion from camera work.

A subject moving right differs from a camera moving right. Check the starting state, motion and ending state in the timeline before using your prompt.

AI analysis can miss fast motion or cuts. It cannot guarantee reproduction of the same video.

Frequently asked questions

Where are my key and results stored?

Personal and OpenRouter connection keys stay in page memory and are cleared on refresh or navigation. Login issues a connection key without sharing your password. The trial server stores only dates, random request IDs and a daily changing IP hash for quotas, not request content. Records from previous months are cleared on the next request; Cloudflare backups have separate retention. Google, OpenRouter and model provider terms apply; free-tier data may be used for product improvement. Google API terms ↗

Do I need to log in to YouTube?

Only public videos are supported. We do not ask for YouTube login or cookies. Provider restrictions may still prevent analysis of a public video.

Where do I generate the actual video?

Copy the result into your video generation tool. This page does not sign in to that tool or generate video automatically. Video generation has its own costs.