स्क्रीन कैप्चर एपीआई की मदद से, वेब प्लैटफ़ॉर्म पर टैब, विंडो, और स्क्रीन को शेयर किया जा सकता है. getDisplayMedia()
वाला तरीका, उपयोगकर्ता को मीडिया स्ट्रीम के तौर पर कैप्चर करने के लिए स्क्रीन चुनने की अनुमति देता है. इसके बाद, इस स्ट्रीम को MediaRecorder API की मदद से रिकॉर्ड किया जा सकता है या नेटवर्क पर दूसरे लोगों के साथ शेयर किया जा सकता है. रिकॉर्डिंग को showOpenFilePicker()
तरीके का इस्तेमाल करके, किसी लोकल फ़ाइल में सेव किया जा सकता है.
नीचे दिए गए उदाहरण में दिखाया गया है कि आप उपयोगकर्ता की स्क्रीन को WebM फ़ॉर्मैट में कैसे रिकॉर्ड कर सकते हैं, उसी पेज पर लोकल तौर पर उसकी झलक कैसे देख सकते हैं, और रिकॉर्डिंग को उपयोगकर्ता के फ़ाइल सिस्टम में कैसे सेव कर सकते हैं.
let stream;
let recorder;
shareScreenButton.addEventListener("click", async () => {
// Prompt the user to share their screen.
stream = await navigator.mediaDevices.getDisplayMedia();
recorder = new MediaRecorder(stream);
// Preview the screen locally.
video.srcObject = stream;
});
stopShareScreenButton.addEventListener("click", () => {
// Stop the stream.
stream.getTracks().forEach(track => track.stop());
video.srcObject = null;
});
startRecordButton.addEventListener("click", async () => {
// For the sake of more legible code, this sample only uses the
// `showSaveFilePicker()` method. In production, you need to
// cater for browsers that don't support this method, as
// outlined in https://web.dev/patterns/files/save-a-file/.
// Prompt the user to choose where to save the recording file.
const suggestedName = "screen-recording.webm";
const handle = await window.showSaveFilePicker({ suggestedName });
const writable = await handle.createWritable();
// Start recording.
recorder.start();
recorder.addEventListener("dataavailable", async (event) => {
// Write chunks to the file.
await writable.write(event.data);
if (recorder.state === "inactive") {
// Close the file when the recording stops.
await writable.close();
}
});
});
stopRecordButton.addEventListener("click", () => {
// Stop the recording.
recorder.stop();
});
ब्राउज़र समर्थन
MediaDevices.getDisplayMedia()
MediaRecorder एपीआई
File System Access API का showSaveFileChooseer()
इसके बारे में और पढ़ें
- W3C स्क्रीन कैप्चर की खास बातें
- W3C MediaStream रिकॉर्डिंग के बारे में खास जानकारी
- WICG फ़ाइल सिस्टम ऐक्सेस की खास बातें
डेमो
एचटीएमएल
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link
rel="icon"
href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🖥️</text></svg>"
/>
<title>How to record the user's screen</title>
</head>
<body>
<h1>How to record the user's screen</h1>
<button id="startShareScreenButton">Start sharing screen</button>
<button id="stopShareScreenButton" disabled>Stop sharing screen</button>
<button id="startRecordButton" disabled>Start recording</button>
<button id="stopRecordButton" disabled>Stop recording</button>
<video autoplay muted playsinline></video>
<pre id="logs"></pre>
</body>
</html>
सीएसएस
:root {
color-scheme: dark light;
}
html {
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
body {
margin: 1rem;
font-family: system-ui, sans-serif;
}
button {
display: block;
margin-bottom: 4px;
}
video {
display: block;
margin-top: 10px;
max-width: 100%;
background: black;
max-height: 480px;
}
pre {
color: red;
white-space: pre-line;
}
JS
const video = document.querySelector('video');
const startShareScreenButton = document.querySelector('#startShareScreenButton');
const stopShareScreenButton = document.querySelector('#stopShareScreenButton');
const startRecordButton = document.querySelector('#startRecordButton');
const stopRecordButton = document.querySelector('#stopRecordButton');
let stream;
let recorder;
startShareScreenButton.addEventListener("click", async () => {
// Prompt the user to share their screen.
stream = await navigator.mediaDevices.getDisplayMedia();
recorder = new MediaRecorder(stream);
// Preview the screen locally.
video.srcObject = stream;
startRecordButton.disabled = false;
stopShareScreenButton.disabled = false;
log("Your screen is being shared.");
});
stopShareScreenButton.addEventListener("click", () => {
// Stop the stream.
stream.getTracks().forEach(track => track.stop());
video.srcObject = null;
stopShareScreenButton.disabled = true;
startRecordButton.disabled = true;
stopRecordButton.disabled = true;
log("Your screen is not shared anymore.");
});
startRecordButton.addEventListener("click", async () => {
// For the sake of more legible code, this sample only uses the
// `showSaveFilePicker()` method. In production, you need to
// cater for browsers that don't support this method, as
// outlined in https://web.dev/patterns/files/save-a-file/.
// Prompt the user to choose where to save the recording file.
const suggestedName = "screen-recording.webm";
const handle = await window.showSaveFilePicker({ suggestedName });
const writable = await handle.createWritable();
// Start recording.
recorder.start();
recorder.addEventListener("dataavailable", async (event) => {
// Write chunks to the file.
await writable.write(event.data);
if (recorder.state === "inactive") {
// Close the file when the recording stops.
await writable.close();
}
});
stopRecordButton.disabled = false;
log("Your screen is being recorded locally.");
});
stopRecordButton.addEventListener("click", () => {
// Stop the recording.
recorder.stop();
stopRecordButton.disabled = true;
log("Your screen has been successfully recorded locally.");
});