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• avcodec/avpacket : correctly set the number of side data elements in av_copy_packet_si...

  20 novembre 2013, par Michael Niedermayer

  avcodec/avpacket : correctly set the number of side data elements in av_copy_packet_side_data()
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/avpacket.c

• HTML5 Video/Audio to Nodejs via Socket.io but with a twist - FFMPEG

  9 janvier 2014, par user1840958

  I'm writing this very simple "skype clone". I tried a variety of other languages, python and layering over Node.js with Meteor, WebRTC, but Node.js+socket.io seems to be working the best and cleanest however I've hit a road block and I can't get it all to work correctly.

  I have two issues,
  1. I think I'm sending real data from the HTML5 getUserMedia, but I might not, and I don't know how to test or find out. I think that using, "video.src = window.URL.createObjectURL(stream) ;" makes the Blob stream an actual Data stream... but I don't know.

  This is my Broadcast.html
  It's a very simple getUserMedia grab the camera and microphone... Then I connect to the Socket and on click of the Broadcast button, fires off the Emit to 'Join' and sends over the 'webcamstream' data.

  <video autoplay="autoplay" height="280"></video>
  
  <button class="recordbutton">Broadcast</button>
  
  
  
  
  
  <code class="echappe-js">&lt;script language=&quot;javascript&quot; type=&quot;text/javascript&quot;&gt;<br />
  
  var socket = io.connect(&amp;#39;http://video.domain.com:3031&amp;#39;);<br />
  
  socket.on(&amp;#39;connect&amp;#39;, function() {<br />
  
    $(&amp;#39;#conversation&amp;#39;).append(&amp;#39;Connected &lt;br /&gt;&amp;#39;);<br />
  
  });<br />
  
  <br />
  
  function onVideoFail(e) {<br />
  
    console.log(&amp;#39;webcam fail!&amp;#39;, e);<br />
  
  };<br />
  
  <br />
  
  function hasGetUserMedia() {<br />
  
    return !!(navigator.getUserMedia || <br />
  
      navigator.webkitGetUserMedia || <br />
  
      navigator.mozGetUserMedia || <br />
  
      navigator.msGetUserMedia);<br />
  
  }<br />
  
  <br />
  
  if (hasGetUserMedia()) {<br />
  
    alert(&amp;#39;It is working...&amp;#39;);<br />
  
  } else {<br />
  
    alert(&amp;#39;getUserMedia() is not supported in your browser&amp;#39;);<br />
  
  }<br />
  
  <br />
  
  window.URL = window.URL || window.webkitURL;<br />
  
  navigator.getUserMedia  = navigator.getUserMedia || <br />
  
                           navigator.webkitGetUserMedia ||<br />
  
                            navigator.mozGetUserMedia || <br />
  
                             navigator.msGetUserMedia;<br />
  
  <br />
  
  var video = document.querySelector(&amp;#39;video&amp;#39;);<br />
  
  var streamRecorder;<br />
  
  var webcamstream;<br />
  
  <br />
  
  if (navigator.getUserMedia) {<br />
  
          navigator.getUserMedia({audio: true, video: true}, function(stream) {<br />
  
              video.src = window.URL.createObjectURL(stream);<br />
  
              webcamstream = stream;<br />
  
          }, onVideoFail);<br />
  
  } else {<br />
  
     alert (&amp;#39;failed&amp;#39;);<br />
  
  }<br />
  
  <br />
  
  function startBroadcasting() {<br />
  
      alert(&amp;#39;Broadcast Now Clicked&amp;#39;);<br />
  
      console.log(webcamstream);<br />
  
      socket.emit(&amp;#39;join&amp;#39;, webcamstream);<br />
  
      socket.emit(&amp;#39;echo&amp;#39;, &amp;#39;echo1 echo2 echo3 &lt;br /&gt;&amp;#39;);<br />
  
  }<br />
  
  <br />
  
  socket.on(&amp;#39;echo&amp;#39;, function(data) {<br />
  
      $(&amp;#39;#conversation&amp;#39;).append(data);<br />
  
  }); <br />
  
  &lt;/code&gt;&lt;/pre&gt;<br />
  
  <br />
  
  &lt;p&gt;&lt;/p&gt;<br />
  
  <br />
  
  &lt;p&gt;This is the app.js<br />
  
  2. What I&amp;#39;m trying to do here is consume in the &amp;#39;stream&amp;#39; from the socket, but in it&amp;#39;s place I have a test video to see if the FFMPEG is actually working. I&amp;#39;m using &lt;a href=&quot;https://github.com/schaermu/node-fluent-ffmpeg&quot; rel=&quot;nofollow&quot;&gt;https://github.com/schaermu/node-fluent-ffmpeg&lt;/a&gt;.&lt;/p&gt;<br />
  
  <br />
  
  &lt;p&gt;When I run this test with my myth.mp4 file, I do get an out.avi however it&amp;#39;s 0 bytes ??&lt;/p&gt;<br />
  
  <br />
  
  &lt;pre&gt;&lt;code&gt;var express = require(&amp;#39;express&amp;#39;);<br />
  
  var socket = require(&amp;#39;socket.io&amp;#39;);<br />
  
  var ffmpeg = require(&amp;#39;fluent-ffmpeg&amp;#39;);<br />
  
  var fs = require(&amp;#39;fs&amp;#39;);<br />
  
  <br />
  
  var app = express();<br />
  
  <br />
  
  app.configure(function(req, res){<br />
  
      app.use(express.static(__dirname + &amp;#39;/&amp;#39;));<br />
  
  });<br />
  
  <br />
  
  var server = app.listen(3031);<br />
  
  var io = socket.listen(server);<br />
  
  <br />
  
  io.sockets.on(&amp;#39;connection&amp;#39;, function(socket) {<br />
  
      socket.on(&amp;#39;join&amp;#39;, function(stream) {<br />
  
          socket.stream = stream;<br />
  
          socket.emit(&amp;#39;echo&amp;#39;, socket.stream + &amp;#39;&lt;br /&gt;&amp;#39;);<br />
  
          var proc = new ffmpeg({source:&amp;#39;/srv/www/domain.com/video/red/myth.mp4&amp;#39;})<br />
  
              .withAspect(&amp;#39;4:3&amp;#39;)<br />
  
              .withSize(&amp;#39;640x480&amp;#39;)<br />
  
              .applyAutopadding(true, &amp;#39;white&amp;#39;)<br />
  
              .saveToFile(&amp;#39;/srv/www/domain.com/video/red/out.avi&amp;#39;, function(retcode, error){<br />
  
                  socket.emit(&amp;#39;echo&amp;#39;, &amp;#39;file has been converted succesfully &lt;br /&gt;&amp;#39;);<br />
  
              });<br />
  
      });<br />
  
      socket.on(&amp;#39;echo&amp;#39;, function(data) {<br />
  
          socket.emit(&amp;#39;echo&amp;#39;, data);<br />
  
      });<br />
  
  });<br />
  
  &lt;/code&gt;&lt;/pre&gt;<br />
  
  <br />
  
  &lt;p&gt;I get no errors on Node Start up, I get no Errors on running.  I do get a 0 Byte out.avi file freshly created every time I run this.&lt;/p&gt;<br />
  
  <br />
  
  &lt;p&gt;I have a linode VPS with CentOS/Nginx&lt;/p&gt;<br />
  
  <br />
  
  &lt;p&gt;node -v<br />
  
  v0.10.21&lt;/p&gt;<br />
  
  <br />
  
  &lt;p&gt;FFMPEG<br />
  
  ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers<br />
  
    built on Nov 23 2013 17:43:13 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)<br />
  
    configuration: --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libvo-aacenc --enable-libxvid --disable-ffplay --enable-shared --enable-gpl --enable-postproc --enable-nonfree --enable-avfilter --enable-pthreads --extra-cflags=-fPIC<br />
  
    libavutil      52. 18.100 / 52. 18.100<br />
  
    libavcodec     54. 92.100 / 54. 92.100<br />
  
    libavformat    54. 63.104 / 54. 63.104<br />
  
    libavdevice    54.  3.103 / 54.  3.103<br />
  
    libavfilter     3. 42.103 /  3. 42.103<br />
  
    libswscale      2.  2.100 /  2.  2.100<br />
  
    libswresample   0. 17.102 /  0. 17.102<br />
  
    libpostproc    52.  2.100 / 52.  2.100<br />
  
  Hyper fast Audio and Video encoder<br />
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...&lt;/p&gt;<br />
  
  <br />
  
  &lt;p&gt;Thanks in advance for your help.&lt;/p&gt;
  

• Call for Speakers : Share Your Voice at MatomoCamp 2025 !

  10 juillet, par Alex Carmona

  MatomoCamp is back for its 2025 edition — and the Call for Speakers is now open until July 31st !

  As proud sponsors of this unique, community-driven event, we’re excited to invite experts, enthusiasts, and curious minds to contribute to MatomoCamp 2025, the annual online gathering dedicated to web analytics, open source, digital privacy, and of course — Matomo. MatomoCamp is the premier free online conference for the Matomo Analytics community in Europe, sponsored by Matomo Analytics. Taking place online on Wednesday 26 November 2025 from 9:30 AM to 5:30 PM CET, this event brings together professionals passionate about ethical analytics, data privacy, and building a better web.

  Whether you’re a long-time user, developer, marketer, researcher, or just someone with a fresh perspective on ethical analytics, your voice belongs at MatomoCamp. Last year, we welcomed over 1,000 attendees from around the world. This year, we’re aiming even higher with an expanded programme designed to serve everyone from analytics beginners to enterprise architects.

  What is MatomoCamp ?

  MatomoCamp is a free, fully online event bringing together the global Matomo community. Across two days of talks, panels, demos, and workshops, participants explore :

  • Web analytics & measurement
  • Digital marketing & SEO
  • Open source projects & collaboration
  • Privacy-first data strategies
  • Case studies, experiments, and more

  With sessions in English, French, German, and beyond, MatomoCamp aims to make digital analytics more accessible, ethical, and transparent for everyone.

  MatomoCamp returns this November 2025 with an exciting new vision. For the first time, we’re expanding beyond purely technical content to welcome speakers from all backgrounds who can contribute insights on analytics, privacy, marketing, and the ethical web. Whether you’re a developer, marketer, analyst, or privacy advocate, we want to hear from you.

  Who can apply ?

  Anyone ! We’re looking for people from all backgrounds who want to share :

  • A practical tip or use case with Matomo
  • Insights into digital analytics, privacy, or open source
  • A success (or failure !) story from your own journey
  • A workshop or hands-on demonstration
  • A bold opinion on the future of web data
  • A behind-the-scenes look at your work or research

  You don’t have to be a professional speaker. We welcome first-time speakers, underrepresented voices, and community members who want to share something valuable — no matter how niche or broad.

  What makes a great talk ?

  There’s no one right formula. But here’s what works well :

  • Real-world experience
  • Specific, actionable insights
  • A clear structure (15–45 minutes)
  • Something you care deeply about
  • A story only you can tell

  And remember — this isn’t just about Matomo. Topics that touch on ethical analytics, open source values, or digital sovereignty are more than welcome.

  Key info

  • Where : Online (free & open to all)
  • When : November 2025 (exact dates to be announced)
  • Languages : English, French, German (other languages welcome !)
  • Deadline to apply : July 31, 2025
  • Submit your talk here

  Why does this matter ?

  At Matomo, we believe that data should empower, not exploit. MatomoCamp is more than just an event — it’s a celebration of what’s possible when communities come together to build a better digital future.

  As sponsors, we’re proud to support this independent, open source event. But more importantly, we want to amplify your voice — because every perspective shared brings us closer to a more ethical, transparent, and inclusive analytics ecosystem.

  Have a story to share ?

  Don’t overthink it. If it matters to you, it will matter to someone else. Apply to speak before July 31st and join us at MatomoCamp 2025 !

  Submit your session here !

  Let’s build the future of analytics — together.