React Video Annotation Tool

React Video Annotation Tool is a flexible and intuitive library to add annotations on videos in real-time. It supports a wide range of features including shape tools, annotation lists, undo/redo functionality, and more.

Features

• Annotate videos with custom shapes and colors.
• Easily control video playback.
• Undo, redo, and delete shapes with simple methods.
• Manage annotations with a customizable list.
• Integrate directly with databases for saving/loading annotations.
• Responsive and styled UI for modern web apps.

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• Keyboard Shortcuts for Improved Productivity

• Ctrl + Z: Undo the last action.

• Ctrl + Y: Redo the undone action.

• Delete Button: Remove selected shapes.

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Preview

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Links

• Demo Site: View Live Demo
• GitHub Repository: View on GitHub

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Installation

Install the package using npm or yarn:

npm install react-video-annotation-tool

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Usage

App.js Example

import { useRef, useState } from "react";
import { TwoDVideoAnnotation } from "react-video-annotation-tool";
import { FaUndo, FaRedo, FaTrash } from "react-icons/fa";

function App() {
  const annotationRef = useRef(null);
  const [allAnnotations, setAllAnnotations] = useState([]);

  return (
    <div className="app">
      {/* Toolbar */}
      <div className="tools">
        <button onClick={() => annotationRef.current?.undo()}>
          <FaUndo /> Undo
        </button>
        <button onClick={() => annotationRef.current?.redo()}>
          <FaRedo /> Redo
        </button>
        <button onClick={() => annotationRef.current?.deleteShape()}>
          <FaTrash /> Delete
        </button>
      </div>

      {/* Video Annotation Tool */}
      <TwoDVideoAnnotation
        rootRef={annotationRef}
        shapes={allAnnotations}
        setShapes={setAllAnnotations}
        selectedShapeTool={"rectangle"} 
        videoUrl="https://videos.pexels.com/video-files/6804117/6804117-sd_960_506_25fps.mp4"
      />
    </div>
  );
}

export default App;

Shapes objects and properties examples, expected as initial Data array of shapes of objects if passed

// Example of initial data array with shape objects
const initialShapes = [
{
  id: "rectangle1", // Unique identifier for the shape
  color: "blue", // Color of the annotation
  label: "My Rectangle", // Optional label for the shape
  data: {}, // Custom data for user-defined purposes
  properties: {
    type: "rectangle", // Shape type
    x: 13, // X-coordinate of the rectangle
    y: 5, // Y-coordinate of the rectangle
    width: 4, // Width of the rectangle
    height: 4, // Height of the rectangle
    startTime: 0, // Start time of the annotation (seconds)
    endTime: 0.5, // End time of the annotation (seconds)
    scaleX: 1, // Horizontal scale factor
    scaleY: 1, // Vertical scale factor
    screenHeight: 600, // Height of the annotation area
    screenWidth: 400, // Width of the annotation area
    strokeWidth: 2, // Stroke width for the rectangle
    opacity: 0.8, // Opacity of the rectangle
  },
},
{
  id: "circle1", // Unique identifier for the circle
  color: "red",
  label: "My Circle", // Optional label for the circle
  data: {}, 
  properties: {
    type: "circle", 
    x: 10,
    y: 15, 
    radius: 4, // Radius of the circle
    startTime: 1, 
    endTime: 1.5, 
    scaleX: 1, 
    scaleY: 1,
    screenHeight: 600, 
    screenWidth: 400, 
    strokeWidth: 2, 
    opacity: 0.8,
  },
},
{
  id: "line1", 
  color: "green", 
  label: "My Line", 
  data: {}, 
  properties: {
    type: "line",
    x: 20,
    y: 30, 
    points: [0, 0, 100, 0, 100, 100], // Array of points defining the line
    startTime: 2, 
    endTime: 2.5, 
    scaleX: 1, 
    scaleY: 1, 
    screenHeight: 600, 
    screenWidth: 400, 
    strokeWidth: 2, 
    opacity: 0.8, 
  },
},
];

          

API

TwoDVideoAnnotation Props

Prop	Type	Default	Description
rootRef	ref	-	Ref to access methods (e.g., undo, redo, deleteShape).
shapes	array	[]	Initial array of annotations.
setShapes	function	-	State setter to update annotations.
videoUrl	string	-	URL of the video to annotate.
selectedShapeTool	string	-	The currently selected shape tool ('rectangle' , 'circle' , 'line').
hideAnnotations	boolean	false	Whether to hide all annotations.
annotationColor	string	"red"	Color for new annotations.
videoControls	object	{}	Video playback controls ({autoPlay:true, loop:true}, etc.).
lockEdit	boolean	false	Disable editing annotations.
selectedAnnotationData	function	-	Callback triggered when annotation is selected.

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Developers

• Aniket Gupta
• Suraj Singh

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License

This library is available under the MIT License.