Imencode - OpenCV Error: (!image.empty()) in imencode, in file... RPI4

[evgeniy-bondarenk0]

Hello. I'm trying to get a video stream behind the cameras on the RPI 4, but I'm getting the following error:

Using the libcamera-hello command, the image is displayed. I suspect there may be an error in the camera's image format.

Platform: Raspbian Bullseye 11 (32-bit) OpenCV: v4.5.5 NodeJS: v16

My code: const cv2 = require('@u4/opencv4nodejs'); const path = require('path'); const express = require('express'); const app = express(); const server = require('http').Server(app); const io = require('socket.io')(server);

app.set('view engine', 'ejs'); const FPS = 30; const Vcap = new cv2.VideoCapture(0); Vcap.set(cv2.CAP_PROP_FRAME_WIDTH, 300); Vcap.set(cv2.CAP_PROP_FRAME_HEIGHT, 300);

app.get('/', async(req, res, next) => { res.render('index'); }); let frame; setInterval(() => { frame = Vcap.read() const image = cv2.imencode('.jpg', frame).toString('base64') io.emit('image', image); }, 1000 / FPS); server.listen(3030, () => console.log('open up your browser'));

[piercus]

This repository is not maintained anymore, please use @u4/opencv4nodejs for a more active fork