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• Run ffmpeg using shell_exec from a file called by AJAX

  20 décembre 2012, par user1255617

  Good morning,

  I will do my best to phrase a "thoughtful" and "helpful" question for all regarding running FFMPEG using shell_exec from a file called by AJAX. First I will start by listing my current code.

  AJAX script

          <code class="echappe-js">&lt;script&gt;<br />
  
              var xmlhttp;<br />
  
              if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari<br />
  
                xmlhttp=new XMLHttpRequest();<br />
  
              }else{// code for IE6, IE5<br />
  
                xmlhttp=new ActiveXObject(&quot;Microsoft.XMLHTTP&quot;);<br />
  
              }<br />
  
              xmlhttp.onreadystatechange=function(){<br />
  
                if (xmlhttp.readyState==4 &amp;amp;&amp;amp; xmlhttp.status==200){<br />
  
                    //Do something<br />
  
                }<br />
  
              }<br />
  
              xmlhttp.open(&quot;GET&quot;,&quot;video_convert.php&quot;,true);<br />
  
              xmlhttp.setRequestHeader(&quot;Content-type&quot;,&quot;application/x-www-form-urlencoded&quot;);<br />
  
              xmlhttp.send(id=&amp;lt;?php echo $video_upload_result; ?&gt;);<br />
  
          &lt;/script&gt;
  
  

  PHP Code

  $destination = "files/videos/";
  
  $ffmpeg = '/ffmpeg/ffmpeg';
  
  $videoid = mysql_clean($_GET['id']);
  
  
  
  $sql = "SELECT file_name FROM cb_video WHERE videoid = '$videoid' ";
  
  $result = mysql_query($sql);
  
  $row = mysql_fetch_assoc($result);
  
  
  
  $file_old = glob('files/videos/'.$file_name.'.*');
  
  
  
  shell_exec($ffmpeg." -i '/var/www/html/".$file_old[0]."' -ar 44100 /var/www/html/".$destination.$file_name.".flv");

  FFMPEG is installed and working properly as I have used it elsewhere on the site and have attempted a file conversion using PuTTY. I am able to run a PHP file called by AJAX as I have done it in a separate instance on this site. The only thing I can think of is that the shell_exec isn't running properly, which I have used elsewhere, since it is in a separate file called by ajax or else it is being closed pre-maturely. I have also tested this code in a main file and it works properly until I try to call the separate file with it in it.

  So, my question is can this code actually work and if so what steps should I take to get it working ?

  Also I would greatly appreciate it if before closing my questions I had a chance to defend or rephrase them to properly suit this boards high standards for questions if I have somehow failed it in any way.

  Thank you.

• avdevice/decklink : add support for selecting devices based on their unique ID

  20 septembre 2018, par Marton Balint

  avdevice/decklink : add support for selecting devices based on their unique ID
  Also bump the API version requirement to 10.9.5, because on olders versions
  
  there were some reports of crashes using the undocumented, yet available
  
  BMDDeckLinkDeviceHandle.
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] configure
  • [DH] doc/indevs.texi
  • [DH] doc/outdevs.texi
  • [DH] libavdevice/decklink_common.cpp
  • [DH] libavdevice/decklink_common.h
  • [DH] libavdevice/version.h

• Analytics for the Internet of Things : collecting all your things’ data with Piwik to stay in control ?

  25 novembre 2015, par Matthieu Aubry — About

  At Piwik our mission is to create the leading free and open source analytics platform, and supporting global organisations and communities to keep full control over their data.

  Our broad mission started 8 years ago and we focused at first helping people to liberate their website analytics data, then liberate their mobile app analytics data. But it is clear that there is much more than Web + Mobile : data is everywhere and a lot more data is being generated by software, people and their activities, robots, sensors…

  I’d like to share an interesting article which highlights one of the growing trends of technology : the rise of the Internet Of Things : 6 Ways Analytics And The Internet Of Things Will Transform Business.

  Here is an extract :

  The tech industry is no stranger to change, but the data derived from the IoT is taking disruption to a new level.

  At IBM’s Insight conference last month, Bob Picciano, senior vice president of IBM Analytics, talked about the rise of the “cognitive business”, or an enterprise that engages with analytics to improve its customer relations, business processes, and decision-making capabilities.

  There are dueling predictions over how ubiquitous the Internet of Things will be, but most indicate that the marketplace will host between 50 and 75 billion connected objects by 2020, signaling novel challenges for hardware manufacturing and development. Software engineers, likewise, may need to completely revamp programs to better exploit the influx of data, while innovators need to wrestle with the changes wrought by analytics.

  IBM’s Insight event unfolded in light of this wave of disruption. The lineup of corporate presenters converged on the same message : Analytics is for everyone, and your viability in the marketplace depends on it.

  […]

  IBM’s Insight 2015 conference sounded off on the most important trends in data usage and management. It also served a wake-up call for developers, engineers, and tech leaders. As the Internet of Things alters the landscape of analytics, hardware design needs to change, software development requires novel approaches, and tech management must become more agile in order to realize data’s greatest benefits.

  So far there are 1 million websites using Piwik… but what if there could be 10 or 50 million things (sensors, devices) being measured by Piwik ?

  Together we will be creating the best open source and generic analytics platform, that is engineered to last, and designed to help humanity keep control and gain Freedom.

  We aim for Piwik to be the ideal platform to measure the Internet Of Things.

  We’re still at the beginning of this journey and it will take the best of all of us to get there.

  See you on the way !

  PS : if you’d like to get involved with Piwik, we would be glad to welcome you !