https://github.com/rohan-deshpande/canvas-to-video

Write your canvas to video
https://github.com/rohan-deshpande/canvas-to-video

canvas html5 html5-canvas html5-video threejs video

Last synced: 3 months ago
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Write your canvas to video

• Host: GitHub
• URL: https://github.com/rohan-deshpande/canvas-to-video
• Owner: rohan-deshpande
• License: mit
• Created: 2021-03-19T06:19:42.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2021-03-24T04:40:35.000Z (almost 4 years ago)
• Last Synced: 2024-09-27T16:40:58.277Z (3 months ago)
• Topics: canvas, html5, html5-canvas, html5-video, threejs, video
• Language: JavaScript
• Homepage:
• Size: 211 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# canvas-to-video

## Overview

`canvas-to-video` is a simple API for writing out whatever is being rendered to your HTML5 canvas to video - all done natively in the browser.

This is especially useful for anyone wanting to create videos of things like [three](https://three.org) applications or games.

`canvas-to-video` uses the following core APIs

- [`captureStream`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/captureStream)

- [`MediaRecorder`](https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder)

- [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob)

## Installation

```

npm i canvas-to-video

```

## Usage

The below code is a super simple example of how you can record whatever is being rendered to your canvas for the `duration` period.

```js

import record from 'canvas-to-video';

const canvas = document.getElementById('canvas');

const button = document.getElementById('button');

const player = document.getElementById('player');

const options = {

  // the number of times you want to record per duration

  timeslice: 100,

  // the length of video you would like to record

  duration: 3000,

  mimeType: 'video/webm',

  audioBitsPerSecond: 0,

  videoBitsPerSecond: 25000000,

};

button.addEventListener('mousedown', async () => {

  const video = await record(canvas, options);

  const url = URL.createObjectURL(video);

  player.src = url;

});

```