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How to insert ffmpeg option to QProcess

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  • mumulalaM Offline
    mumulalaM Offline
    mumulala
    wrote on last edited by mumulala
    #1

    Hi everyone. I have little problem with QProcess.
    i can run basic command,

    QProcess *vconv = new QProcess;
    QString input_file=" /home/gafi/copypastetoroot.avi";
    QStrng output_file="/home/gafi/copypastetoroot.mkv ";
    QString program = "ffmpeg";
    QStringList arguments;
    
    arguments << "-i" << input_file << output_file;
    
    vconv -> start(program, arguments);
    

    but if i add some option i got error "At least one output file must be specified"
    arguments <<"-i" << input_file << "-q:v 1" << output_file;

    i tried in terminal it run normally
    ffmpeg -i /home/gafi/copypastetoroot.avi -q:v 1 /home/gafi/copypastetoroot.mkv

    How to insert the options? thank you.

    mumulalaM 1 Reply Last reply
    0
    • mumulalaM mumulala

      Hi everyone. I have little problem with QProcess.
      i can run basic command,

      QProcess *vconv = new QProcess;
      QString input_file=" /home/gafi/copypastetoroot.avi";
      QStrng output_file="/home/gafi/copypastetoroot.mkv ";
      QString program = "ffmpeg";
      QStringList arguments;
      
      arguments << "-i" << input_file << output_file;
      
      vconv -> start(program, arguments);
      

      but if i add some option i got error "At least one output file must be specified"
      arguments <<"-i" << input_file << "-q:v 1" << output_file;

      i tried in terminal it run normally
      ffmpeg -i /home/gafi/copypastetoroot.avi -q:v 1 /home/gafi/copypastetoroot.mkv

      How to insert the options? thank you.

      mumulalaM Offline
      mumulalaM Offline
      mumulala
      wrote on last edited by
      #2

      solved. i have to split each options and value into single string

      1 Reply Last reply
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