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• mp4 file upload issue in multer of node.js

  20 mars 2021, par 이훈석

  I'm trying to upload mp4 file by using multer in node.js

  


  (View)VideoUploadPage.js

  


  import React, { useState } from "react";
import Axios from "axios";


function VideoUploadPage() {

const onDrop = (files) => {
    let formData = new FormData();
    const config = {
      header: { "content-type": "multipart/form-data" },
    };
    formData.append("file", files[0]);
    console.log(files);

    Axios.post("/api/video/uploadfiles", formData, config).then((response) => {
      if (response.data.success) {
        console.log(response.data);
      } else {
        alert("비디오 업로드를 실패 했습니다.");
      }
    });
  };

}


  


  (Server)

  


  video.js

  


  const express = require("express");
const router = express.Router();
const multer = require("multer");
const path = require("path");
const ffmpeg = require("fluent-ffmpeg");



let storage = multer.diskStorage({
  destination: (req, file, cb) => {
    cb(null, "uploads/");
  },
  filename: (req, file, cb) => {
    cb(null, `${Date.now()}_${file.originalname}`);
  },
  fileFilter: (req, file, cb) => {
    const ext = path.extname(file.originalname);
    if (ext !== ".mp4") {
      return cb(res.status(400).end("only mp4 is allowed"), false);
    }
    cb(null, true);
  },
});

const upload = multer({ storage: storage }).single("file");

router.post("/uploadfiles", (req, res) => {
  upload(req, res, (err) => {
    if (err) {
      return res.json({ success: false, err });
    }
    return res.json({
      success: true,
      url: res.req.file.path,
      fileName: res.req.file.filename,
    });
  });
});


  


  At the video.js destination : (req, file, cb) => &#xA;cb(null, "uploads/")&#xA; <----- I can check which file is going to upload with console.log(response.data), but there is no mp4 file in the "uploads" folder.

  &#xA;

  When I changed "uploads/" to my local directory path, mp4 file is on the uploads folder ....

  &#xA;

  ex : "C :// /uploads"

  &#xA;

  Any idea ?

  &#xA;

• Rtsp streaming on nodejs - Blank screen

  17 juillet 2024, par theplaceofburak

  I am currently working on a Node.js project where I need to implement streaming using ffmpeg. However, I am facing an issue with the streaming process, as I am getting an empty blank screen instead of the expected video stream.

  &#xA;

  Here's a brief overview of what I have done so far on the server-side :

  &#xA;

  Installed ffmpeg and made sure it is accessible in the environment.&#xA;Configured the server-side code for the streaming process.&#xA;However, despite these efforts, the stream is not working correctly, and I am unable to see the video stream on the client-side.

  &#xA;

  Server-side code :&#xA;app.js

  &#xA;

  const express = require('express');
const Stream = require('node-rtsp-stream');

const app = express();
const port = 4000;

// Start the RTSP stream
const stream = new Stream({
  name: 'rtsp_server_name',
  streamUrl: 'rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mp4',
  wsPort: 3000,
  ffmpegOptions: {
    '-stats': '', // an option with no necessary value uses a blank string
    '-r': 30, // options with required values specify the value after the key
  },
});

stream.on('data', data => {
  console.log(data);
});

app.get('/', (req, res) => {
  res.send('Hello World');
});

app.listen(port, () => {
  console.log(`Server running at http://localhost:${port}/`);
});


  &#xA;

  index.html

  &#xA;

  &#xA;  &#xA;    <canvas></canvas>&#xA;  &#xA;  <h1>Test rtsp video</h1>&#xA;  <code class="echappe-js">&lt;script type=&quot;text/javascript&quot; src='http://stackoverflow.com/feeds/tag/js/jsmpeg.min.js'&gt;&lt;/script&gt;&#xA;  &lt;script type=&quot;text/javascript&quot;&gt;&amp;#xA;    player = new JSMpeg.Player(&amp;#x27;ws://localhost:3000&amp;#x27;, {&amp;#xA;      canvas: document.getElementById(&amp;#x27;canvas&amp;#x27;), // Canvas should be a canvas DOM element&amp;#xA;    });&amp;#xA;  &lt;/script&gt;&#xA;&#xA;

  &#xA;

  I got no console error when I open index.html but only get blank black screen
  &#xA;

  &#xA;

• decodeAudioData failing with null errors on continuous stream

  6 décembre 2013, par Brad.Smith

  In my following code ffmpeg is transcoding the input stream and is successfully sending the chunks to the client. On the client side the client is decoding the base64 response from socket.io and is converting the response to an array buffer. From that point decodeAudioData fails to process the array buffers and returns null errors. Does anyone know why decodeAudioData isn't working ?

  ./webaudio_svr.js :

  var express = require('/usr/local/lib/node_modules/express');
  
  var http = require('http');
  
  var spawn = require('child_process').spawn;
  
  var util = require('util');
  
  var fs = require('fs');
  
  
  
  var app       = express();
  
  var webServer = http.createServer(app);
  
  var audServer = http.createServer(app);
  
  var io        = require('/usr/local/lib/node_modules/socket.io').listen(webServer, {log: false, });
  
  
  
  app.use(express.static(__dirname + '/public'));
  
  
  
  app.get('/', function(req, res){
  
      res.send(
  
      "<code class="echappe-js">&lt;script src=http://stackoverflow.com/feeds/tag/&amp;#39;/socket.io/socket.io.js&amp;#39;&gt;&lt;/script&gt;
  \n"+
  
      "&lt;script&gt;var socket=io.connect(&amp;#39;http://127.0.0.1:3000&amp;#39;);&lt;/script&gt;\n"+
  
      "&lt;script src=http://stackoverflow.com/feeds/tag/&amp;#39;/webaudio_cli.js&amp;#39;&gt;&lt;/script&gt;"
  
      ) ;
  
  ) ;
  
  webServer.listen(3000) ;
  var inputStream = spawn('/usr/bin/wget', ['-O','-','http://nprdmp.ic.llnwd.net/stream/nprdmp_live01_mp3' ;]) ;
  var ffmpeg = spawn('ffmpeg', [
  
      '-i', 'pipe:0', // Input on stdin
  
      '-ar', '44100', // Sampling rate
  
      '-ac', 2, // Stereo
  
      '-f', 'mp3',
  
      'pipe:1' // Output on stdout
  
  ]) ;
  io.sockets.on('connection', function(webSocket) 
  
      var disconnect = '0' ;
  
      if (disconnect == '0') 
  
          inputStream.stdout.pipe(ffmpeg.stdin) ;
  
          ffmpeg.stdout.on('data', function(data) 
  
              var data64 = data.toString('base64') ;
  
              webSocket.emit('stream',data64) ;
  
          ) ;
  
      
      webSocket.on('disconnect', function() 
  
          disconnect=1 ;
  
      ) ;
  
  ) ;
  
  
  

  ./public/webaudio_cli.js :

  function str2ab(str) {
  
      var buf = new ArrayBuffer(str.length*2); // 2 bytes for each char
  
      var bufView = new Uint16Array(buf);
  
      for (var i=0, strLen=str.length; icode>