REST API with node-rtsp-stream NPM - node.js

Question

I am trying to stream a RTSP in HTML5 pages using node-rtsp-stream NPM. Here I can see the live stream in HTML page. But the thing is when I try to do REST API with this it throws TypeError: stream is not a constructor. when I call my post method first time its working properly. when I try to do the same again it throws error.
here is my API:
RTSPRouter.post('/getPreview', (req, res) => {
// stream.mpeg1Muxer.kill();
stream = new stream({
name: 'name',
streamUrl: req.body.RTSPURL,
wsPort: 9999,
ffmpegOptions: {
'-r': 30
}
})
res.send(stream)
})
API for Kill :
RTSPRouter.get('/killPreview', (req, res) => {
process.kill(req.body.pid1)
stream.prototype.stop()// this method also not working
})
Even I killed the stream alone using the PID it's throwing the same error.
Kindly help me to fix this problem, thanks in advance!

Answer 1

you're getting a typeError because you haven't imported Stream.
Your code should look like this:
Stream = require("node-rtsp-stream");
stream = new Stream({
name: "name",
streamUrl: "rtsp://184.72.239.149/vod/mp4:BigBuckBunny_115k.mov",
wsPort: 9999,
ffmpegOptions: {
// options ffmpeg flags
"-stats": "", // an option with no neccessary value uses a blank string
"-r": 30, // options with required values specify the value after the key
},
});
res.send(stream);
Also don't forget to run npm install node-rtsp-stream.

Answer 2

After a few days I found the answer for this question.
You should not create stream like this:
var stream = require('node-rtsp-stream')
stream = new stream({
name: 'name',
streamUrl: req.body.RTSPURL,
wsPort: 9999,
ffmpegOptions: {
'-r': 30
}
})
Instead of this, try the below code:
var stream = require('node-rtsp-stream')
var streamObj;
streamObj = new stream({
name: 'name',
streamUrl: req.body.RTSP,
wsPort: 9999,
ffmpegOptions: { // options ffmpeg flags
'-stats': '', // an option with no neccessary value uses a blank string
'-r': 30 // options with required values specify the value after the key
}
})
The actual error is that I had imported a stream with the name stream, and tried to initiate the stream with same variable name stream. You have to use a different variable name to initialize the stream. In my case I used streamobj.