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• what is ffmpeg exit code 2 ? and also output error array is empty and not working in php

  14 juin 2019, par Mehdi Zamani

  I use ffmpeg to convert bitrate to 128 but not working in php

   exec("ffmpeg -i input.mp3 -codec:a libmp3lame -b:a 128k output().mp3 2>&1", 
  
   $output, $exit_code);
  
   if ($exit_code!= 0) {
  
      $data['message'][] = "Error";
  
   }
  
  
  
   print_r($output);
  
   print_r($exit_code);
  
   exit;

  After running this code show error code 2.
  The output is an empty array and also exit_code is 2 and not create output.mp3 file.

  I already study How can I find out what this ffmpeg error code means ? but this isn’t my problem and don’t explain error code 2 or error code 2 is not defined. My problem is dont show any error and error message is empty just exit_code show 2 that means is some error happened.

• How to stream a wmv file as an mp4 file (convert on the fly) over HTTP using ffmpeg or something similar ?

  8 juin 2016, par Adam Tal

  I understand it’s not possible to use the tag to play a WMV file.

  I thought about the following solution :

  • Streaming a video means sending small chunks of frames and sound
  • Reading a wmv file in chunks is surely possible
  • An html video tag can receive chunks in an mp4/webm/ogg format and display it

  Can I read a WMV file as a Steam and convert in on the fly to output it as if it was an MP4 file ?

  Few points :

  • The technology is not really important. I just have a problem I need to solve.. I would prefer a solution in C# or node.js because those are environments I’m comfortable with but anything else will do.
  • I will be happy to stream the file from a different server as wmv and output it as mp4 but I’m also able to download the file completely to my server and stream it from the local hard drive.
  • The mp4 output is not a must. It can also be webm or ogg (just need the video tag to support it)

• switch between video streaming

  5 décembre 2012, par user1225084

  I am struggling with switching between multiple live streams. For example, I have five live streaming servers streaming(HTTP or RTSP) and I want to put some broker between those (five) streaming sources and destination so that output to the destination would be one video streaming (later I may change the streaming source again using switch). Broker plays role of switcher, My question is, is there such open source "switcher" ? Or how this technology works ?

  here is link to similar question but I want some open source or some brief guidance about how it could be implemented : http://forums.creativecow.net/thread/117/858680

  Thank You in advance