Qprocess don't work, when I use FFmpeg commands.

NintyS

Hello, i have soon deadline and I need a fast help. I use Qprocess to run FFmpeg commands but nothing work. I mean no errors but commands which recording don't record and I don't see Andy new files in folder where files must be saved.

readAllStandardError give me nothing.

This is the code: ```

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";

}

Christian Ehrlicher

replace ~ with the full path - it's a shell feature.

NintyS

I must connect all arguments and I now have this "Output file #0 does not contain any stream" I go search in internet.

Christian Ehrlicher

@NintyS said in Qprocess don't work, when I use FFmpeg commands.:

I go search in internet.

Please read my post above ...

NintyS

@Christian-Ehrlicher said in Qprocess don't work, when I use FFmpeg commands.:

Please read my post above ...

I have read this and this don't change any thing. If I use "~" or path there is the same problem.

Christian Ehrlicher

Please show your arguments you've tested without ~ and why does your filename ends with '\n' ? This will not work.

NintyS

Ok, my bad, I give arguments without spaces and with path this will be working :) ( ThX m8 )