Node-Media-Server Network Output Bandwidth "0"

[mtugrulesin]

I am using NMS on RPi 3 A+. My Camera RPi Zero W. Zero streaming RTSP stream with this FFMPEG script;

raspivid -t 0 -a 1024 -a "Camera Number" -a 12 -ae 32 -n -w 1280 -h 720 -fps 15 -o - | ffmpeg -r 15 -i - -c:v copy -preset veryfast -use_wallclock_as_timestamps 1 -tune zerolatency -fflags nobuffer -rtsp_transport tcp -f rtsp rtsp://127.0.0.1:8554/live

this stream from Zero's RTMP-Simple-Server. My app.js file ;

const NodeMediaServer = require('./');

const config = {
  rtmp: {
    port: 1935,
    chunk_size: 60000,
    gop_cache: true,
    ping: 30,
    ping_timeout: 60,
    /*
    ssl: {
      port: 443,
      key: './privatekey.pem',
      cert: './certificate.pem',
    }
    */
  },
  relay: {
  ffmpeg: '/usr/bin/ffmpeg',
  tasks: [
    {
      app: 'live',
      mode: 'static',
      edge: 'rtsp://150.150.150.10:8554/live',
      name: 'Kamera1',
      rtsp_transport : 'tcp' 
    }
  ]
},
  http: {
    port: 8000,
    mediaroot: '/home/pi/Node-Media-Server/media',
    webroot: './www',
    allow_origin: '*',
    api: true
  },
  auth: {
    api: true,
    api_user: 'admin',
    api_pass: 'admin',
    play: false,
    publish: false,
    secret: 'nodemedia2017privatekey'
  },
  trans: {
    ffmpeg: '/usr/bin/ffmpeg',
    tasks: [
      {
        app: 'live',
        hls: true,
        hlsFlags: '[hls_time=2:hls_list_size=3:hls_flags=delete_segments]',
        mp4: true,
        //mp4Flags: '[movflags=frag_keyframe+empty_moov]',
      }
    ]
  }
};

let nms = new NodeMediaServer(config)
nms.run();

nms.on('preConnect', (id, args) => {
  console.log('[NodeEvent on preConnect]', `id=${id} args=${JSON.stringify(args)}`);
  // let session = nms.getSession(id);
  // session.reject();
});

nms.on('postConnect', (id, args) => {
  console.log('[NodeEvent on postConnect]', `id=${id} args=${JSON.stringify(args)}`);
});

nms.on('doneConnect', (id, args) => {
  console.log('[NodeEvent on doneConnect]', `id=${id} args=${JSON.stringify(args)}`);
});

nms.on('prePublish', (id, StreamPath, args) => {
  console.log('[NodeEvent on prePublish]', `id=${id} StreamPath=${StreamPath} args=${JSON.stringify(args)}`);
  // let session = nms.getSession(id);
  // session.reject();
});

nms.on('postPublish', (id, StreamPath, args) => {
  console.log('[NodeEvent on postPublish]', `id=${id} StreamPath=${StreamPath} args=${JSON.stringify(args)}`);
});

nms.on('donePublish', (id, StreamPath, args) => {
  console.log('[NodeEvent on donePublish]', `id=${id} StreamPath=${StreamPath} args=${JSON.stringify(args)}`);
});

nms.on('prePlay', (id, StreamPath, args) => {
  console.log('[NodeEvent on prePlay]', `id=${id} StreamPath=${StreamPath} args=${JSON.stringify(args)}`);
  // let session = nms.getSession(id);
  // session.reject();
});

nms.on('postPlay', (id, StreamPath, args) => {
  console.log('[NodeEvent on postPlay]', `id=${id} StreamPath=${StreamPath} args=${JSON.stringify(args)}`);
});

nms.on('donePlay', (id, StreamPath, args) => {
  console.log('[NodeEvent on donePlay]', `id=${id} StreamPath=${StreamPath} args=${JSON.stringify(args)}`);
});

My output bandwidth is 0 and does not flow. It won't open completely after a while. But seeing still on NMS Web interface.