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• 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;
  

• Get libx264 to work on flutter android application

  17 juillet 2023, par ololo

  I am using ffmpeg_kit_flutter package in my flutter application and I need to use libx264.

  


  In my Podfile for ios I have the following setup which helped me got libx264 working perfectly for ios :

  


   if plugin_name == 'ffmpeg_kit_flutter'
        pod 'ffmpeg_kit_flutter/full-gpl', :path => File.join(relative_symlink_dir, 'plugins', plugin_name, platform)
      else
        pod plugin_name, :path => File.join(relative_symlink_dir, 'plugins', plugin_name, platform)
      end


  


  However, when I ran the flutter app on android I am getting the error that states :

  


  


  Unknown encode 'libx264'

  


  


  Are there any configurations I need to do on the android side of things to get it working for android as well ?

  


• ffmpeg blend filter not work right in android

  15 mai 2018, par tainguyen

  I’m doing my android project which uses blend filter to create uncover down video transition. My test device is Samsung S4 (Android version : 4.4.2)
  this is my command string :

  ffmpeg 
  
  -loop 1 -t 1 -i img001.jpg 
  
  -loop 1 -t 1 -i img002.jpg 
  
  -loop 1 -t 1 -i img003.jpg 
  
  -loop 1 -t 1 -i img004.jpg 
  
  -loop 1 -t 1 -i img005.jpg 
  
  -filter_complex 
  
  "[1:v][0:v]blend=all_expr='if(lte(Y,N*H/24),A,B)'[b1v];
  
  [2:v][1:v]blend=all_expr='if(lte(Y,H*N/24),A,B)'[b2v];
  
  [3:v][2:v]blend=all_expr='if(lte(Y,H*N/24),A,B)'[b3v];
  
  [4:v][3:v]blend=all_expr='if(lte(Y,H*N/24),A,B)'[b4v];
  
  [0:v][b1v][1:v][b2v][2:v][b3v][3:v][b4v]
  
  [4:v]concat=n=9:v=1:a=0,format=yuv420p[v]" -map "[v]" out_cover_top.mp4 -y

  The result video transition is not scroll from the top to the bottom as I want. It break into several parts ( the red arrow show you the top and bottom of an part).
  

  Help me please.