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• webcam displayed on LAN not to the internet

  9 juin 2015, par Francois Baret

  OK, this is not due to a dumb mistake : I have forwarded the port and there is no firewall in between.
  I try to make the "live streaming" section of jsmpeg (https://github.com/phoboslab/jsmpeg) to work on the Internet. To get the webcam stream on my webpage I modify "stream-server.js"

  if( process.argv.length < 3 ) {
  
          console.log(
  
                  'Usage: \n' +
  
                  'node stream-server.js <secret> [ ]'
  
          );
  
          process.exit();
  
  }
  
  
  
  var STREAM_SECRET = process.argv[2],
  
          STREAM_PORT = process.argv[3] || 8082,
  
          WEBSOCKET_PORT = process.argv[4] || 8084,
  
          STREAM_MAGIC_BYTES = 'jsmp'; // Must be 4 bytes
  
  
  
  var width = 320,
  
          height = 240;
  
  
  
  // Websocket Server
  
  var socketServer = new (require('ws').Server)({port: WEBSOCKET_PORT});
  
  socketServer.on('connection', function(socket) {
  
          // Send magic bytes and video size to the newly connected socket
  
          // struct { char magic[4]; unsigned short width, height;}
  
          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( 'New WebSocket Connection ('+socketServer.clients.length+' total)' );
  
          
  
          socket.on('close', function(code, message){
  
                  console.log( 'Disconnected WebSocket ('+socketServer.clients.length+' total)' );
  
          });
  
  });
  
  
  
  socketServer.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 incomming MPEG Stream
  
  var streamServer = require('http').createServer( function(request, response) {
  
          var params = request.url.substr(1).split('/');
  
  
  
          if( params[0] == STREAM_SECRET ) {
  
                  width = (params[1] || 320)|0;
  
                  height = (params[2] || 240)|0;
  
                  
  
                  console.log(
  
                          'Stream Connected: ' + request.socket.remoteAddress + 
  
                          ':' + request.socket.remotePort + ' size: ' + width + 'x' + height
  
                  );
  
                  request.on('data', function(data){
  
                          socketServer.broadcast(data, {binary:true});
  
                  });
  
          }
  
          else {
  
                  console.log(
  
                          'Failed Stream Connection: '+ request.socket.remoteAddress + 
  
                          request.socket.remotePort + ' - wrong secret.'
  
                  );
  
                  response.end();
  
          }
  
  }).listen(STREAM_PORT);
  
  
  
  console.log('Listening for MPEG Stream on http://127.0.0.1:'+STREAM_PORT+'/<secret>/<width>/<height>');
  
  console.log('Awaiting WebSocket connections on ws://127.0.0.1:'+WEBSOCKET_PORT+'/');
  
  
  
  var servi = require('servi'),                // include the servi library
  
          app = new servi(false);                // servi instance
  
  
  
  // configure the server's behavior:
  
  app.port(8080);                                                // port number to run the server on
  
  app.serveFiles("public");                        // serve all static HTML files from /public
  
  app.start();        
  
  console.log("Listening for new clients on port 8080");</height></width></secret></secret>

          
  
          
  
          
  
  
  
  
  
  <h1>
  
   The Canvas size specified 
  
  </h1>
  
          
  
          <canvas width="640" height="480">
  
                  <p>
  
                          Please use a browser that supports the Canvas Element, like
  
                          <a href="http://www.google.com/chrome">Chrome</a>,
  
                          <a href="http://www.mozilla.com/firefox/">Firefox</a>,
  
                          <a href="http://www.apple.com/safari/">Safari</a> or Internet Explorer 10
  
                  </p>
  
          </canvas>
  
          <code class="echappe-js">&lt;script type=&quot;text/javascript&quot; src=&quot;http://stackoverflow.com/feeds/tag/jsmpg.js&quot;&gt;&lt;/script&gt;
  	
  &lt;script type=&quot;text/javascript&quot;&gt;<br />
  
                  // Show loading notice<br />
  
                  var canvas = document.getElementById('videoCanvas');<br />
  
                  var ctx = canvas.getContext('2d');<br />
  
                  ctx.fillStyle = '#444';<br />
  
                  ctx.fillText('Loading...', canvas.width/2-30, canvas.height/3);<br />
  
  <br />
  
                  // Setup the WebSocket connection and start the player<br />
  
                  var client = new WebSocket( 'ws://192.168.1.15:8084/' );<br />
  
                  var player = new jsmpeg(client, {canvas:canvas});<br />
  
          &lt;/script&gt;
  

  The "index.html" is included in a "public" folder.

  Then I start ffmpeg with :

  `ffmpeg -s 640x480 -f video4linux2 -i /dev/video0 -f mpeg1video -b:v 800k -r 30 http://192.168.1.15:8082/1693/640/480/`

  When I open, on any station of the lan, url 192.168.1.x:8080 I get the webcam streaming on my page "jsmpeg streaming webcam" ; but if use the public ip 41.142.x.y:8080 from outside the local network (using 3G) I get the page (with the h1 line "The Canvas size specified") but no video it just says in the frame "loading".
  I do not understand why it works locally and not globally. Why the page is streaming on the internet but not the webcam ?
  Thanks for your help !

• A *hot* Piwik Community Meetup 2015 !

  10 août 2015, par André Bräkling — Community

  Last weekend I arrived in Germany to attend the Piwik Community Meetup 2015 and now I am in Poland.

  The meetup was HOT in every sense ! Berlin temperatures reached 35 degrees (celsius), as I finally meet in person several long-time, dedicated Piwik community contributors.

  

  Meetup preparation in Berlin, photo by M. Zawadziński, licensed under CC-BY-SA 4.0

  Pictures from the meetup preparation sessions
  

  In the first leg of my trip I was in Berlin to meet Piwik community members to prepare for the 2015 annual Piwik community meetup. These are my notes taken during the meeting at the request of one of my colleagues. I also relayed live on Framasphère, Twitter and IRC.

  

  Community discussion at the meetup, photo by D.Czajka, licensed under CC-BY-SA 4.0

  More pictures from the Piwik meetup
  

  This was harder than I expected, as I took notes with my laptop, pictures with my phone, wrote live to social media (using the Android Diaspora Native Web App), and used my laptop to relay on IRC. Going forward this requires better preparation, I was glad I had a few links and pictures ready before hand but it really requires intense focus to achieve this. I am glad presenters were patient when I requested repeating some of the ideas they shared. I am also a bit disappointed not much happened in IRC.

  Two day preparation sessions

  The discussions and session we had during the two days prior to the meetup are available here.

  We gathered in rented apartments in Berlin, this reminded me very much of similar community gatherings and perhaps of BarCamp and, at a much smaller scale, UDS sessions.

  

  Piwik Pizza !, photo by F. Rodríguez, licensed under CC-BY-SA 4.0

  A list of ideas of topics was initially submitted, we then proceeded to have scheduled sessions for open discussion. Several people shared their concern there was no possible remote participation which led to making public the Trello boards used/linked here.

  Note : The Trello links below still have action items and notes that are pending bug report / feature requests filing which should happen over the coming weeks. Most importantly, many action items will need identifying leads for different community team including Translations and Documentation, and better coordination of coming community engagement.

  Monday sessions consisted of the following subjects :

  • What are Piwik values & how to communicate them ? (see below for details)
  • How to encourage and recognize new external contributors ?
  • How could we double the Piwik userbase ?
  • How Community can organise help resources

  On Tuesday we met again to discuss the following subjects :

  • Piwik Long Term support (LTS)
  • How do Piwik.org (project) and Piwik PRO (company) sit together / are organized ? – An important part of this session was about having better communication channels and improving the new team page (bug #8520 and bug #8519, respectively)
  • Improving usability of Piwik e.g. for new users – this last session was not held has we ran out of time and prepared to go to the meetup venue.

  Some more details about individual preparation sessions

  What are Piwik values & how to communicate them ?

  The main subjects in this session were important changes proposed in the project mission and values. This was edited directly on on the wiki page on GitHub, some of the changes can be seen by comparing revisions.

  Piwik mission statement (bug #7376)

  “To create the leading Free and open source analytics platform, and to support global organisations and communities to keep full control over their data.”

  Our values

  • Openness
  • Freedom
  • Transparency
  • Data ownership
  • Privacy
  • Kaizen (改善) : continuous improvement

  This was also presented by Matthieu Aubry at the meetup and is published in the Roadmap page. Bringing more visibility and perhaps having a top page for Mission and Values was also brought up.

  Meetup agenda and notes

  The official agenda is available here.

  Many Piwik PRO employees stayed in Berlin for the meetup, and we had good participation although less than last year in Munich as my colleagues told me. Some were consultants, others staff from public organizations, universities, etc. In retrospect considering the very hot weather and summer holidays the attendance was good. I was very happy to arrive at the beautiful Kulturbrauerei and enter the air-conditioned Soda Club. T-Shirts were waiting for all attendees and free drinks (non-alcohol !) were welcome

• Youtube WatchMe android project Login issue

  16 septembre 2015, par Kichu

  I created live streaming application using https://github.com/youtube/yt-watchme. And its installed on android phone.If I logged into this app.I’s still shows the "Not Signed in" Message. After login its showing the following error in android studio console

  09-16 16:48:01.970   25937-3107/com.google.android.apps.watchme E/WatchMe﹕ com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
  
      {
  
      "code": 403,
  
      "errors": [
  
      {
  
      "domain": "usageLimits",
  
      "message": "Access Not Configured. The API (YouTube Data API) is not enabled for your project. Please use the Google Developers Console to update your configuration.",
  
      "reason": "accessNotConfigured",
  
      "extendedHelp": "https://console.developers.google.com"
  
      }
  
      ],
  
      "message": "Access Not Configured. The API (YouTube Data API) is not enabled for your project. Please use the Google Developers Console to update your configuration."
  
      }
  
              at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
  
              at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
  
              at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:321)
  
              at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1056)
  
              at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
  
              at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
  
              at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
  
              at com.google.android.apps.watchme.util.YouTubeApi.getLiveEvents(YouTubeApi.java:155)
  
              at com.google.android.apps.watchme.MainActivity$GetLiveEventsTask.doInBackground(MainActivity.java:312)
  
              at com.google.android.apps.watchme.MainActivity$GetLiveEventsTask.doInBackground(MainActivity.java:295)
  
              at android.os.AsyncTask$2.call(AsyncTask.java:288)
  
              at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  
              at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
  
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
  
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
  
              at java.lang.Thread.run(Thread.java:841)

  How can i solve this issue please help.

  This application is connecting to YouTube Watch Me project.Is it possible to connect my project using client Id and client secret(How can i configure my client id to this app ?) ?

  Please suggest