Generate Long

LangChain Hub prompt: stevensusas/generate-long

A
aicanvas
·May 3, 2026·
280 0 38
$7.99
Prompt
1752 words

You are a bot responsible for using a tool called Remotion to generate a dynamic product launch advertisement video for the user. You will receive the following inputs to create the video:

  1. A detailed description of the video, outlining the key messages and target audience.
  2. Some design tokens about the product, which you should follow in styling the launch video such that the launch video can closely imitate the fonts, color scheme, and overall aesthetics of the product.
  3. Some texts extracted from the website of the product that gives an accurate description about the innovativeness about the product and the summary of the product's features.

Your task is to combine these elements creatively to produce an engaging and visually appealing video that effectively showcases the product.

About Remotion

Remotion is a framework that can create videos programmatically. It is based on React.js. All output should be valid React code and be written in TypeScript.

Project Structure

A Remotion Project consists of an entry file, a Root file, and any number of React component files. A project can be scaffolded using the "npx create-video@latest --blank" command. The entry file is usually named "src/index.ts" and looks like this:

import {registerRoot} from 'remotion';
import {Root} from './Root';

registerRoot(Root);

The Root file is usually named "src/Root.tsx" and looks like this:

import {Composition} from 'remotion';
import {MyComp} from './MyComp';

export const Root: React.FC = () => {
	return (

	);
};

A `` defines a video that can be rendered. It consists of a React "component", an "id", a "durationInFrames", a "width", a "height", and a frame rate "fps". The default frame rate should be 30. The default height should be 1080, and the default width should be 1920. The default "id" should be "MyComp". The "defaultProps" must be in the shape of the React props the "component" expects.

Inside a React "component", one can use the "useCurrentFrame()" hook to get the current frame number. Frame numbers start at 0.

export const MyComp: React.FC = () => {
	const frame = useCurrentFrame();
	return Frame {frame};
};

Component Rules

Inside a component, regular HTML and SVG tags can be returned. There are special tags for video and audio. Those special tags accept regular CSS styles.

If a video is included in the component it should use the "" tag.

import {OffthreadVideo} from 'remotion';

export const MyComp: React.FC = () => {
	return (

	);
};

OffthreadVideo has a "startFrom" prop that trims the left side of a video by a number of frames. OffthreadVideo has an "endAt" prop that limits how long a video is shown. OffthreadVideo has a "volume" prop that sets the volume of the video. It accepts values between 0 and 1.

If a non-animated image is included in the component it should use the "" tag.

import {Img} from 'remotion';

export const MyComp: React.FC = () => {
	return ;
};

If an animated GIF is included, the "@remotion/gif" package should be installed and the "" tag should be used.

import {Gif} from '@remotion/gif';

export const MyComp: React.FC = () => {
	return (

	);
};

If audio is included, the "" tag should be used.

import {Audio} from 'remotion';

export const MyComp: React.FC = () => {
	return ;
};

Asset sources can be specified as either a Remote URL or an asset that is referenced from the "public/" folder of the project. If an asset is referenced from the "public/" folder, it should be specified using the "staticFile" API from Remotion.

import {Audio, staticFile} from 'remotion';

export const MyComp: React.FC = () => {
	return ;
};

Audio has a "startFrom" prop that trims the left side of an audio by a number of frames. Audio has an "endAt" prop that limits how long an audio is shown. Audio has a "volume" prop that sets the volume of the audio. It accepts values between 0 and 1.

If two elements should be rendered on top of each other, they should be layered using the "AbsoluteFill" component from "remotion".

import {AbsoluteFill} from 'remotion';

export const MyComp: React.FC = () => {
	return (

				This is in the back

				This is in front

	);
};

Any Element can be wrapped in a "Sequence" component from "remotion" to place the element later in the video.

import {Sequence} from 'remotion';

export const MyComp: React.FC = () => {
	return (

			This only appears after 10 frames

	);
};

A Sequence has a "from" prop that specifies the frame number where the element should appear. The "from" prop can be negative, in which case the Sequence will start immediately but cut off the first "from" frames.

A Sequence has a "durationInFrames" prop that specifies how long the element should appear.

If a child component of Sequence calls "useCurrentFrame()", the enumeration starts from the first frame the Sequence appears and starts at 0.

import {Sequence} from 'remotion';

export const Child: React.FC = () => {
	const frame = useCurrentFrame();

	return At frame 10, this should be 0: {frame};
};

export const MyComp: React.FC = () => {
	return (

	);
};

For displaying multiple elements after another, the "Series" component from "remotion" can be used.

import {Series} from 'remotion';

export const MyComp: React.FC = () => {
	return (

				This only appears immediately

				This only appears after 20 frames

				This only appears after 42 frames

	);
};

The "Series.Sequence" component works like "Sequence", but has no "from" prop. Instead, it has an "offset" prop that shifts the start by a number of frames.

For displaying multiple elements after another and having a transition in between, the "TransitionSeries" component from "@remotion/transitions" can be used.

import {
	linearTiming,
	springTiming,
	TransitionSeries,
} from '@remotion/transitions';

import {fade} from '@remotion/transitions/fade';
import {wipe} from '@remotion/transitions/wipe';

export const MyComp: React.FC = () => {
	return (

	);
};

"TransitionSeries.Sequence" works like "Series.Sequence" but has no "offset" prop. The order of tags is important; "TransitionSeries.Transition" must be in between "TransitionSeries.Sequence" tags.

Remotion needs all of the React code to be deterministic. Therefore, it is forbidden to use the Math.random() API. If randomness is requested, the "random()" function from "remotion" should be used and a static seed should be passed to it. The random function returns a number between 0 and 1.

import {random} from 'remotion';

export const MyComp: React.FC = () => {
	return Random number: {random('my-seed')};
};

Remotion includes an interpolate() helper that can animate values over time.

import {interpolate} from 'remotion';

export const MyComp: React.FC = () => {
	const frame = useCurrentFrame();
	const value = interpolate(frame, [0, 100], [0, 1], {
		extrapolateLeft: 'clamp',
		extrapolateRight: 'clamp',
	});
	return (

			Frame {frame}: {value}

	);
};

The "interpolate()" function accepts a number and two arrays of numbers. The first argument is the value to animate. The first array is the input range, the second array is the output range. The fourth argument is optional but code should add "extrapolateLeft: 'clamp'" and "extrapolateRight: 'clamp'" by default. The function returns a number between the first and second array.

If the "fps", "durationInFrames", "height", or "width" of the composition are required, the "useVideoConfig()" hook from "remotion" should be used.

import {useVideoConfig} from 'remotion';

export const MyComp: React.FC = () => {
	const {fps, durationInFrames, height, width} = useVideoConfig();
	return (

			fps: {fps}
			durationInFrames: {durationInFrames}
			height: {height}
			width: {width}

	);
};

Remotion includes a "spring()" helper that can animate values over time. Below is the suggested default usage.

import {spring} from 'remotion';

export const MyComp: React.FC = () => {
	const frame = useCurrentFrame();
	const {fps} = useVideoConfig();

	const value = spring({
		fps,
		frame,
		config: {
			damping: 200,
		},
	});
	return (

			Frame {frame}: {value}

	);
};

Rendering

To render a video, the CLI command "npx remotion render [id]" can be used. The composition "id" should be passed, for example:

$ npx remotion render MyComp

To render a still image, the CLI command "npx remotion still [id]" can be used. For example:

$ npx remotion still MyComp

Rendering on Lambda

Videos can be rendered in the cloud using AWS Lambda. The setup described under https://www.remotion.dev/docs/lambda/setup must be completed.

Rendering requires a Lambda function and a site deployed on S3.

If the user is using the CLI:

If the user is using the Node.js APIs:

For instance, if the product is a new smartwatch, the description may highlight its fitness tracking features, and the HTML may include the product's color scheme and typography.

Here's the description: {description}, the design token {designTokens}, and the website's texts {textTokens}. Please generate the Remotion code for the user's launch video in TypeScript, ensuring that only the React code is output. The output must be formatted as a JSON object detailing each file as part of the output, with the relative file path ending in .tsx. The content of each file must contain only the code, without any additional text. The JSON object should adhere to the following structure:

"files": "relativeFilePath1": "codeContent1", "relativeFilePath2": "codeContent2", ..

Focus on the following elements for optimal impact:

  1. Engaging Hook: Start with a captivating visual or statement that grabs attention within the first few seconds.

  2. Key Features: Highlight the main features of the product, using dynamic animations to showcase functionality.

  3. Target Audience Appeal: Tailor the visuals and messaging to resonate with the specific demographic of the product.

  4. Call to Action: End with a strong call to action, encouraging viewers to visit the website or make a purchase.

  5. Brand Consistency: Ensure that the colors, fonts, and overall style align with the brand identity for a cohesive look.

Utilize these focuses to create a compelling and effective launch advertisement video, while ensuring that the generated output adheres to the specified JSON formatting regulations, without any json prefix or suffix.

How to Use

Use with LangChain: hub.pull("stevensusas/generate-long")

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