Qt+OpenCV以时间命名视频名字

在多次保存视频的情况下，如果每次都手动修改视频名字，显得很麻烦，因此考虑通过时间戳来命名视频的名字，这样每次保存的视频都不会重复

首先添加头文件

#include <QDateTime>
然后在程序中添加代码如下：

/******************************
***********保存视频按钮************
*****************************/
void MainWindow::on_TakePicBtn_clicked()
{
QDateTime ctime = QDateTime::currentDateTime();
QString sss = ctime.toString("MMddhhmm");
int ss = sss.toInt();
QString a = QString::number(ss);
QString out0 = QString("D:\\0-%1.avi").arg(ss);
QString out1 = QString("D:\\1-%1.avi").arg(ss);
QByteArray location0 = out0.toLatin1();
QByteArray location1 = out1.toLatin1();
char* outFile0 = location0.data();
char* outFile1 = location1.data();
if(!(cam0.isOpened() && cam1.isOpened()))
{
cam0.open(0);
cam1.open(1);
}
write0.open(outFile0,VideoWriter::fourcc('M', 'J', 'P', 'G'), 30.0, Size(640, 480), true);
write1.open(outFile1,VideoWriter::fourcc('M', 'J', 'P', 'G'), 30.0, Size(640, 480), true);
while(OPEN)
{
if(cam0.isOpened())
{
cam0 >> frame0;
//if(!frame0) break;
write0.write(frame0);
namedWindow("VideoPlay0", WINDOW_NORMAL);
imshow("VideoPlay0", frame0);
waitKey(1000 / 30);
}
if(cam1.isOpened())
{
cam1 >> frame1;
//if(!frame1) break;
write1.write(frame1);
namedWindow("VideoPlay1", WINDOW_NORMAL);
imshow("VideoPlay1", frame1);
waitKey(1000 / 30);
}
}
}