windows Qt 录屏 录音

启动录屏录音：

connect(&m_Process, &QProcess::readyReadStandardOutput, [&]() {
    qDebug() << "Standard output:" << QString::fromLocal8Bit(m_Process.readAllStandardOutput());
});

connect(&m_Process, &QProcess::readyReadStandardError, [&]() {
    QString qstr = QString::fromLocal8Bit(m_Process.readAllStandardError());
    qDebug() << "Standard error:" << qstr;
});

connect(&m_Process, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished), [=](int exitCode, QProcess::ExitStatus exitStatus) {
    qDebug() << "Process finished with exit code" << exitCode << " " << exitStatus;
});

//转码参数
QStringList arguments;
arguments << "-f" << "gdigrab"
    << "-framerate" << "30"
    << "-i" << "desktop"
    << "-f" << "dshow"
    << "-i" << QString("audio=%1").arg(m_strAudioDeviceName.c_str())
    << qstrFolder;

m_Process.setProcessChannelMode(QProcess::MergedChannels);
m_Process.start("ffmpeg", arguments);

结束录屏、录音：

if (m_Process.isOpen()) {
    m_Process.write("q");
}

音频设备名称通过windows c++ 获取当前音频输入设备-CSDN博客 获取