Capturing images from webcam and converting to rgb24. Linux only (v4l2)
npm install linuxcam
var cam = require('linuxcam');
cam.start("/dev/video0", 320, 240);
var frame = cam.frame(); // Buffer
The buffer contains rgb24 data and you can convert it using jpeg-fresh module.
var Jpeg = require('jpeg-fresh').Jpeg;
var jpeg = new Jpeg(frame.data, frame.width, frame.height, 'rgb');
var jpeg_image = jpeg.encodeSync(); // Buffer
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var cam = require('linuxcam');
var Jpeg = require('jpeg-fresh').Jpeg;
cam.start("/dev/video0", 320, 240);
function update(socket) {
var frame = cam.frame();
var jpeg = new Jpeg(frame.data, frame.width, frame.height, 'rgb');
var jpeg_frame = jpeg.encodeSync();
socket.emit("frame", jpeg_frame.toString('base64'));
setTimeout(function() {
update(socket);
}, 40);
}
io.on('connection', function(socket){
socket.on('error', function(err){
console.log("ERROR: "+err);
});
update(socket);
});
http.listen(9639, function(){
console.log('listening on *:9639');
});
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.socket.io/socket.io-1.3.5.js"></script>
<head>
<body>
<canvas id="canvas" width="320" height="240"></canvas>
<script>
socket = io("http://localhost:9639");
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var image = new Image();
image.onload = function() {
ctx.drawImage(image, 0, 0, 320, 240);
};
socket.on('frame', function (frame) {
image.src = "data:image/jpeg;base64," + frame;
});
</script>
</body>
</html>
FAQs
Capturing images from webcam and converting to rgb24. Linux only (v4l2)
The npm package linuxcam receives a total of 0 weekly downloads. As such, linuxcam popularity was classified as not popular.
We found that linuxcam demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Ransomware payment rates hit an all-time low in 2024 as law enforcement crackdowns, stronger defenses, and shifting policies make attacks riskier and less profitable.
Security News
require(esm) backported to Node.js 20, easing the transition to ESM-only packages and reducing complexity for developers as Node 18 nears end-of-life.
Security News
PyPI now supports iOS and Android wheels, making it easier for Python developers to distribute mobile packages.