[ffmpeg]通过Qt调用ffmpeg命令

Java代码  

1. poc = new QProcess(this);  
2.    QString command = QString("D:/ffmpeg-bbezxcy-compressMode-0.0.1/bin/ffmpeg -i F:rawvideo/1.mp4 -pass 1 -y F:/rawvideo/1xxx1.mp4");  
3.   connect(poc, SIGNAL(readyReadStandardOutput()), this, SLOT(sltOnReadOutput()));  
4.    connect(poc, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(onFinished(int, QProcess::ExitStatus)));  
5.   
6.    //poc->start("D://ffmpeg.bat");  
7.    poc->setProcessChannelMode(QProcess::MergedChannels);  
8.    poc->start(command);  

 在Qt的槽中这样获取ffmpeg的字符串下载

Cpp代码  

1. void QtClass::sltOnReadOutput(){  
2.     QString s = poc->readAllStandardOutput();  
3. }