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• FFMPEG command doesn't work in PHP, what am I doing wrong ?

  3 mars 2013, par Charlie Ryan

  I'm a bit of a beginner when it comes to PHP, and I'm trying to create a simple(ish) system where files are input, and then converted to html5 video in various resolutions.

  I've sorted out how to handle multiple file uploads etc, but now I'm having a problem.

  I can't seem to get exec to execute FFMPEG in PHP.

  For example, if I type this into my command line (Terminal on Mac OSX 10.8), It converts the video correctly :

  ffmpeg -i /Users/charlieryan/Desktop/MOV01785.MPG websample.mov

  This correctly outputs the converted video file into my home directory.

  However if I run this in PHP as follows :

  exec('ffmpeg -i /Users/charlieryan/Desktop/MOV01785.MPG websample.mov');

  Absolutely nothing happens ... my stat monitor doesn't register any change in processor use, and I can't find the output file anywhere on my system.

  Since I'm a bit of a noob at this, I'm assuming I'm doing something wrong, but what is it ?

  Thanks,

  Charlie

• I am trying to use the ffmpeg.wasm to transcode videos since i dont have very powerful servers does it work for HLS or DASH

  22 février 2021, par James Murry

  my website allows users to upload videos but my servers cant handle the traffic and the budget is low. i heard about webassembly and i have been looking to see if i can transcode on client-side and then upload the hls files to my server.

  


  I cannot find any documentation about hls on ffmpeg.wasm is it even possible.

  


• Publishing mp4 video to RTMP red5 server doesn't work

  25 septembre 2017, par k-hir

  ffmpeg -re -i filename.mp4 -c copy -movflags +frag_keyframe -f mp4 rtmp://localhost/oflaDemo/keyname

  With the command above, I could publish it to red5 with no error, but I couldn’t view the video through flowplayer, unless I put -f flv instead.
  Can someone tell me if it’s because ffmpeg does not support mp4 video stream, or is it the red5 app (oflaDemo)’s problem ?

  Here are the two sources of the viewer :
  Neither of them work if the video is sent by -f mp4.

  First

    
  
    <code class="echappe-js">&lt;script src=&quot;http://vjs.zencdn.net/4.2.0/video.js&quot;&gt;&lt;/script&gt;
    
  
        To view this video please enable JavaScript, and consider upgrading to a web browser
  
        that supports HTML5 video
  
    
  
  

  Second one

  <code class="echappe-js">&lt;script src=&quot;//code.jquery.com/jquery-1.11.2.min.js&quot;&gt;&lt;/script&gt;
  &lt;script src='http://stackoverflow.com/feeds/tag/demos/flowplayer/flowplayer.min.js'&gt;&lt;/script&gt;
  
  &lt;script&gt;<br />
  
  &lt;!--<br />
  
  flowplayer(&quot;#player01&quot;, {<br />
  
    autoplay: false,<br />
  
    live: true,<br />
  
    clip: {<br />
  
      sources: [<br />
  
        {type: &quot;video/flv&quot;, src: &quot;rtmp://localhost/oflaDemo/keyname&quot;}<br />
  
      ]<br />
  
    }<br />
  
  });<br />
  
  //--&gt;<br />
  
  &lt;/script&gt;