opencv4nodejs Error to open VideoCapture RTSP

I have a problem when using a ip cam streaming with RTSP, with my usb cam that working.

More anybody having this error?

Thank you!

node -v 
v8.10.0

npm -v
3.5.2

cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"

ERROR

[email protected] start /app nodemon index.js

[nodemon] 1.18.11 [nodemon] to restart at any time, enter rs [nodemon] watching: . [nodemon] starting node index.js /app/index.js:12 const wCap = new cv.VideoCapture("rtsp://admin:[email protected]/Streaming/Channels/1"); ^

Error: VideoCapture::New - failed to open capture at Object. (/app/index.js:12:14) at Module._compile (module.js:652:30) at Object.Module._extensions..js (module.js:663:10) at Module.load (module.js:565:32) at tryModuleLoad (module.js:505:12) at Function.Module._load (module.js:497:3) at Function.Module.runMain (module.js:693:10) at startup (bootstrap_node.js:188:16) at bootstrap_node.js:609:3 [nodemon] app crashed - waiting for file changes before starting...

index.js

const cv = require('opencv4nodejs');
const path = require('path')
const express = require('express');
const app = express();
const server = require('http').Server(app);
const io = require('socket.io')(server);

const PORT = 3000;
const HOST = '0.0.0.0';

const FPS = 10;
// const wCap = new cv.VideoCapture(0); <<< - Work
const wCap = new cv.VideoCapture("rtsp://admin:[email protected]/Streaming/Channels/1")
wCap.set(cv.CAP_PROP_FRAME_WIDTH, 300);
wCap.set(cv.CAP_PROP_FRAME_HEIGHT, 300);

app.get('/', (req, res) => {
    res.sendFile(path.join(__dirname, 'index.html'));
});

setInterval(() => {
    const frame = wCap.read();
    const image = cv.imencode('.jpg', frame).toString('base64');
    io.emit('image', image);
}, 1000 / FPS)

server.listen(PORT, HOST);

package.json

{
  "name": "streamingTesteSocketIO",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "nodemon index.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.16.4",
    "nodemon": "^1.18.11",
    "opencv4nodejs": "^4.7.3",
    "socket.io": "^2.1.1"
  }
}

index.html

<html>
    <body>
        <img id="image">
        <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.1.1/socket.io.js"></script>
        <script>
            const socket = io.connect('http://192.168.1.15:3000');
            socket.on('image', (image) => {
                // console.log('data', data);
                const imageElm = document.getElementById('image');
                imageElm.src = `data:image/jpeg;base64,${image}`;
            });

        </script>
    </body>
</html>

Jun 08 '19 15:06 fabioharry

Did you find it ???

May 14 '20 20:05 oruamfortes

i'm facing the same here. Did you resolve this error?

May 18 '21 05:05 copycharming

same, must have something to do with the link formatting, perhaps? @Saikiranbelana @oruamfortes @fabioharry

Jun 09 '21 20:06 cgd1

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Error to open VideoCapture RTSP

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