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• merge audio and video with ffmpeg doesnt work correctly

  3 février 2023, par Iman Amani

  I have ubuntu 20.04 and in past days I did this job(merge video and audio) well in terminal and with ffmpeg :

  


  ffmpeg -i input.mp4 -i input2.mp3 -c copy output.mp4

  


  so fast I have recived output.mp4, but now I tried this one and get output without any sound !

  


  I try another ways to merge this ones(also with ffmpeg) but there are no diffrent...

  


• sting up ffmpeg to work in XAMPP

  1er juin 2012, par danny

  I'm trying to figuring out how to install and use ffmpeg on windows 64 with XAMPP.

  I have flow this tutorial and install the ffmpeg-php librarys and I can see the expansion in the phpinfo().

  Now I put my ffmpeg.exe in the site root folder and I run this php script :

  extension_loaded('ffmpeg') or die('Error in loading ffmpeg');
  
  
  
  function convertTo( $input, $output ) 
  
  {
  
  echo $cmd = "ffmpeg -i $input $output";
  
  $outputData = array();
  
  exec( $cmd , $outputData);
  
  echo "<br />";
  
  print_r($outputData);
  
  }
  
  
  
  convertTo( "input.mp4", "output.flv" );

  and I get this output :

  ffmpeg -i input.mp4 output.flv
  
  Array ( )

  but no encoded file.
  My php safe mode is off and the movie file is in the root folder too.

  workplace info :

  • win7 64bit
  • XAMPP 1.7.2
  • Apache 2.2
  • php 5.3.5

  Help will be appreciated.

• How to run FFmpeg command in Qprocess to make it work ?

  18 août 2024, par NintySwinty

  I have problem with QProcess. I added FFmpeg and command to Qt process. When I run this and I don't see any changes in folder where should be files .mkv. Somebody said me to add "\n" to the but this don't help. ( I do it on macOS Catalina )

  


  void MainWindow::Recording(){

    qDebug() << "Nagrywam!";

    Qrec.setProcessChannelMode(QProcess::MergedChannels);
    Qrec.setProgram("/Users/nintyswinty/Desktop/Dev/Qt/build-PlazaPCO-Desktop_Qt_5_15_1_clang_64bit-Debug/ffmpeg");
    Qrec.setArguments({"-framerate", "30", "-f", "avfoundation", "-i", "1", "-f", "avfoundation", "-framerate", "30", "-i", "0", "-c:v", "libx264", "-crf", "0", "-preset", "ultrafast", "~/Desktop/PlazaPCO/" + QString::fromStdString(date) + ".mkv\n"});
    Qrec.start();
    Qrec.waitForFinished();

    qDebug() << "Koniec - nagrywam";

}```