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• ffplay does not play an RTMP stream on VM with Ubuntu

  7 novembre 2020, par PiotrKulesza

  I am trying to run my RTMP stream on a VM with Ubuntu installed. The stream starts on the host computer from the obs program.

  


  Obs stream settings :

  


  Server: rtmp://192.168.56.102:1935/show
Stream key: stream


  


  Obs sends the stream to the nginx server on the VM with Ubuntu installed.

  


  RTMP configuration in nginx.conf

  


  rtmp {
    server {
        listen 1935; # Listen on standard RTMP port
        chunk_size 4000;

        application show {
            live on;
            # Turn on HLS
            hls on;
            hls_path /mnt/hls/;
            hls_fragment 3;
            hls_playlist_length 60;
            # disable consuming the stream from nginx as rtmp
            deny play all;
        }
    }
}


  


  When I start the stream it connects because it shows up in netstat.

  


  Output from netstat :

  


  Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 webapp-VirtualBox:1935  192.168.56.1:56924      ESTABLISHED


  


  But when I try to play stream with ffplay, it doesn't work. I am getting the following error.

  


  ffplay version 4.2.4-1ubuntu0.1 Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
rtmp://192.168.56.102:1935/show/stream: Broken pipeq=    0B f=0/0 


  


  I have tried the following commands to play a stream but each one gives the same error.

  


  ffplay -i rtmp://192.168.56.102:1935/show/stream
ffplay -i rtmp://webapp-VirtualBox:1935/show/stream
ffplay -i rtmp://localhost:1935/show/stream


  


  I also tried VLC but this program also didn't work.
Can anyone tell me what I am doing wrong or forgot to play this stream ?

  


• Decoding a FFMPEG Buffer video Streaming using websocket for processing with OpenCV ?

  4 octobre 2019, par Alexis Meneses

  I am having a problem trying to get a frame from a streaming that I am doing on a web socket.
  I am sending my data from a webcam with ffmpeg using this command :

  ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 -f mpeg1video -b:v 800k -r 30 http://localhost:8092

  Later, I get that stream and broadcast on a node js server with the following code :

  var childProcess = require('child_process')
  
    , express = require('express')
  
    , http = require('http')
  
    , morgan = require('morgan')
  
    , ws = require('ws');
  
  
  
  // configuration files
  
  var configServer = require('./lib/config/server');
  
  
  
  // app parameters
  
  var app = express();
  
  app.set('port', configServer.httpPort);
  
  app.use(express.static(configServer.staticFolder));
  
  app.use(morgan('dev'));
  
  
  
  // serve index
  
  require('./lib/routes').serveIndex(app, configServer.staticFolder);
  
  
  
  // HTTP server
  
  http.createServer(app).listen(app.get('port'), function () {
  
    console.log('HTTP server listening on port ' + app.get('port'));
  
  });
  
  
  
  
  
  var STREAM_MAGIC_BYTES = 'jsmp'; // Must be 4 bytes
  
  var width = 320;
  
  var height = 240;
  
  
  
  // WebSocket server
  
  var wsServer = new (ws.Server)({ port: configServer.wsPort });
  
  console.log('WebSocket server listening on port ' + configServer.wsPort);
  
  
  
  wsServer.on('connection', function(socket) {
  
  
  
    var streamHeader = new Buffer(8);
  
  
  
    streamHeader.write(STREAM_MAGIC_BYTES);
  
    streamHeader.writeUInt16BE(width, 4);
  
    streamHeader.writeUInt16BE(height, 6);
  
    socket.send(streamHeader, { binary: true });
  
    console.log(streamHeader);
  
  
  
    console.log('New WebSocket Connection (' + wsServer.clients.length + ' total)');
  
  
  
    socket.on('close', function(code, message){
  
      console.log('Disconnected WebSocket (' + wsServer.clients.length + ' total)');
  
    });
  
  });
  
  
  
  wsServer.broadcast = function(data, opts) {
  
    for(var i in this.clients) {
  
      if(this.clients[i].readyState == 1) {
  
        this.clients[i].send(data, opts);
  
      }
  
      else {
  
        console.log('Error: Client (' + i + ') not connected.');
  
      }
  
    }
  
  
  
  
  
  };
  
  
  
  // HTTP server to accept incoming MPEG1 stream
  
  http.createServer(function (req, res) {
  
    console.log(
  
      'Stream Connected: ' + req.socket.remoteAddress +
  
      ':' + req.socket.remotePort + ' size: ' + width + 'x' + height
  
    );
  
  
  
    req.on('data', function (data) {
  
      wsServer.broadcast(data, { binary: true });
  
    });
  
  }).listen(configServer.streamPort, function () {
  
    console.log('Listening for video stream on port ' + configServer.streamPort);
  
  
  
  
  
  });
  
  
  
  module.exports.app = app;

  I am getting successfully the data from this.clients[i].send(data, opts) on my python program, but I dont know how to decode the information to process the image with opencv. Any idea ?

  What I want to do is :

  import asyncio
  
  import websockets
  
  import cv2
  
  
  
  async def hello():
  
      uri = "ws://192.168.1.170:8094" #URL of the websocket server
  
      async with websockets.connect(uri) as websocket:
  
              inf = await websocket.recv() 
  
              # Process the data in order to showimg with opencv.
  
  
  
              print(inf)
  
  
  
  
  
  asyncio.get_event_loop().run_until_complete(hello())

• Not getting partial video content while using ffmpeg

  1er mai 2023, par MI Sabic

  I'm trying to partially send a video using nodejs and fluent-ffmpeg. But it's failing to send the data.

  


  When I send the video using only fs module only, it works fine. Here's the code.

  


  const express = require("express");
const app = express();  
const fs = require("fs");

const VIDEO_PATH = 'video.mp4';

app.get("/", (req, res) => {
  res.sendFile(__dirname + "/index.html");
})

app.get("/video", (req, res) => {
  const range = req.headers.range;
  if(!range) {
    res.status(400).send("Requires range header!");
  }

  const size = fs.statSync(VIDEO_PATH).size;
  const CHUNK_SIZE = 10**6;
  const start = Number(range.replace(/\D/g, ""));
  const end = Math.min(start + CHUNK_SIZE, size - 1);

  const contentLength = end - start + 1;

  const headers = {
    "Content-Range": `bytes ${start}-${end}/${size}`,
    "Accept-Ranges": 'bytes',
    "Content-Length": contentLength, 
    "Content-Type": "video/mp4"
  }

  res.writeHead(206, headers);

  const videoStream = fs.createReadStream(VIDEO_PATH, {start, end});
  videoStream.pipe(res);
})

app.listen(3000, () => {
  console.log("Server is running on port: ", 3000);
})


  


  When I send the video after processing it using fluent-ffmpeg module, it doesn't work. I've simplified the code for understanding. Here's my code.

  


  const express = require("express");
const app = express();  
const fs = require("fs");
const ffmpegStatic = require('ffmpeg-static');
const ffmpeg = require('fluent-ffmpeg');

ffmpeg.setFfmpegPath(ffmpegStatic);

const VIDEO_PATH = 'video.mp4';

app.get("/", (req, res) => {
  res.sendFile(__dirname + "/index.html");
})

app.get("/video", (req, res) => {
  const range = req.headers.range;
  if(!range) {
    res.status(400).send("Requires range header!");
  }

  const size = fs.statSync(VIDEO_PATH).size;
  const CHUNK_SIZE = 10**6;
  const start = Number(range.replace(/\D/g, ""));
  const end = Math.min(start + CHUNK_SIZE, size - 1);

  const contentLength = end - start + 1;

  const headers = {
    "Content-Range": `bytes ${start}-${end}/${size}`,
    "Accept-Ranges": 'bytes',
    "Content-Length": contentLength, 
    "Content-Type": "video/mp4"
  }

  res.writeHead(206, headers);

  const videoStream = fs.createReadStream(VIDEO_PATH, {start, end});

  ffmpeg(videoStream)
    .outputOptions('-movflags frag_keyframe+empty_moov')
    .toFormat('mp4')
    .pipe(res);
})

app.listen(3000, () => {
  console.log("Server is running on port: ", 3000);
})


  


  My index.html

  


  &#xA;&#xA;&#xA;  &#xA;  &#xA;  &#xA;  &#xA;&#xA;&#xA;  <video width="50%" controls="controls">&#xA;    <source src="/video" type="video/mp4">&#xA;  </source></video>&#xA;&#xA;&#xA;

  


  Any help would be appreciated. Thanks in advance.