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• ffmpeg can't assign requested address for http stream

  12 août 2022, par MirceaKitsune

  I'm writing a script to stream webcam video / audio to http or rtmp using ffmpeg. I managed to get the capture devices right and have them output to mp4 file, streaming to UDP also seems to work but I want to go with TCP. For some reason ffmpeg always complains about the connection and is unable to access the address.

  


  ffmpeg -f video4linux2 -i /dev/video0 -f alsa -i hw:2 -f mpegts http://1.2.3.4:5678

  


  This instantly gives the error connection refused. I understand I need to add the parameter -listen 1 for http to work, I did so but now the error then becomes cannot assign requested address. Some articles suggested using ffserver but that command doesn't exist, I take it the normal ffmpeg command acts as that now ? Firewall settings and port forwarding in the router are configured and shouldn't be the problem.

  


• POST http://localhost:3000/api/video/thumbnail 500 (Internal Server Error) MongoDB and FFmpeg

  5 juillet 2022, par VoicedCreator

  I am trying to insert a thumbnail on my page using POST and im getting this error
I want to screenshot a video using FFmpeg

  


  const express = require('express');
const router = express.Router();
const multer = require('multer');
var ffmpeg = require('fluent-ffmpeg');
const { User } = require("../models/User");

const { auth } = require("../middleware/auth");
const storage = multer.diskStorage({
    destination: function (req, file, cb) {
      cb(null, 'uploads/')
    },
    filename: function (req, file, cb) {
      cb(null, `${Date.now()}_${file.originalname}`)
    },
    fileFilter: (req, file, cb) => {
        const ext = path.extname(file.originalname);
        if(ext !== '.mp4' || ext !== '.mov' || ext !== '.wmv'){
            return cb(res.status(400).end('Solo archivos mp4-mov-wmv son aceptados'), false);
        }
        cb(null, true)
    }
  })
  
  const upload = multer({ storage: storage }).single("file")


//=================================
//             User
//=================================

router.post("/uploadfiles", (req, res) => {

    upload(req, res, err => {
        if(err) {
            return res.json({ success: false, err })
        }
        return res.json({ success: true, filePath: res.req.file.path, fileName: res.req.file.filename })
    })

});

router.post("/thumbnail", (req, res) => {


    let filePath = ""
    let fileDuration = ""


    ffmpeg.ffprobe(req.body.url, function (err, metadata) {
        console.dir(metadata); // all metadata
        console.log(metadata.format.duration);
        console.log(metadata) 
        fileDuration = metadata.format.duration
    });


    ffmpeg(req.body.url)
        .on('filenames', function (filenames) {
            console.log('Will generate ' + filenames.join(', '))
            console.log(filenames)


            filePath = "uploads/thumbnails/" + filenames[0]
        })
        .on('end', function () {
            console.log('Screenshots taken');
            return res.json({ success: true, url: filePath, fileName: filenames, fileDuration: fileDuration });
        })
        .on('error', function (err) {
            console.error(err);
            return res.json({ success: false, err });
        })
        .screenshots({
            // Will take screenshots at 20%, 40%, 60% and 80% of the video
            count: 3,
            folder: 'uploads/thumbnails',
            size: '320x240',
            //'%b': input basename (filename w/o extension)
            filename: 'thumbnail-%b.png'
        })
});




router.post("/thumbnail", (req, res) => {


    let filePath = ""
    let fileDuration = ""


    ffmpeg(req.body.url)
        .on('filenames', function (filenames) {
            console.log('Will generate ' + filenames.join(', '))
            console.log(filenames)


            filePath = "uploads/thumbnails/" + filenames[0]
        })
        .on('end', function () {
            console.log('Screenshots taken');
            return res.json({ success: true, url: filePath, fileName: filenames, fileDuration: fileDuration });
        })
        .on('error', function (err) {
            console.error(err);
            return res.json({ success: false, err });
        })
        .screenshots({
            // Will take screenshots at 20%, 40%, 60% and 80% of the video
            count: 3,
            folder: 'uploads/thumbnails',
            size: '320x240',
            //'%b': input basename (filename w/o extension)
            filename: 'thumbnail-%b.png'
        })
});



module.exports = router;


  


  Error : POST http://localhost:3000/api/video/thumbnail 500 (Internal Server Error)
TypeError : Cannot read properties of undefined (reading 'format')

  


  I think is because ffmpeg is not connecting to mongodb

  


• Apache2 - RTSP stream redirection without ffmpeg processing

  10 août 2022, par Janusz

  I have IP camera on local network with address let say : 192.168.5.111:36121 (for rtsp conection)
So I can view real time video in local network for example with :

  


  ffplay rtsp://admin:xxxx@192.168.5.111:36121/cam/realmonitor?.......


  


  I can access my camera from any place as well from my linux VPS server with :

  


  ffplay rtsp://admin:xxxx@xbox2.com:37021/cam/realmonitor?.......


  


  To do this on my remote VPS linux server I have VPN server and locally DD-WRT router connected to this server as client :
So on the local router I have :

  


  iptables -t nat -A PREROUTING -i tun11 -p tcp --dport 36121 -j DNAT --to-destination 192.168.5.111


  


  And on VPS server :

  


  iptables -t nat -A PREROUTING -d 176.123.123.123/32 -p tcp -m tcp --dport 37021 -j DNAT --to-destination 10.8.0.10:36121


  


  and that is allowing me to connect my camera from global network with :

  


  ffplay rtsp://admin:xxxx@xbox2.com:37021/cam/realmonitor?.......


  


  or

  


  ffplay rtsp://admin:xxxx@176.123.123.123:37021/cam/realmonitor?.......


  


  Everything works fine - but I would like to avoid to use specific port number directly (and use only :443 for all my cameras) so for example instead of
using xbox2.com:37021 to use xbox2.com/cam1 with redirection from apache2, so to access the camera it would be : ffplay rtsp://admin:xxxx@xbox2.com/cam1/cam/realmonitor?.......
Was trying to use RedirectMatch, ProxyPass, ProxyPassReverse in the VirtualHost config but did not succeed.
So :
question nr.1 - is it at all possible to use apache2 to redirect the rtsp as described before ?
question nr.2 - if yes so how ?

  


  Please note that I can redirect the stream with the node-rtsp-stream within apache2 (over port :443) using :

  


  ProxyPass        /wss1 ws://127.0.0.1:3001
ProxyPassReverse /wss1 ws://127.0.0.1:3001


  


  and later to play it with jsmpeg on the web page but the problem is that ffmpeg processing on my VPS server makes big load to the processor, that's why I would like only to redirect the rtsp stream using apache2 without any ffmpeg processing.