无法在Qt中播放视频

Question

下面给出了播放视频的代码。在运行它时，它说它无法打开文件。

#include <QApplication> 
#include <QtMultimediaWidgets/QVideoWidget> 
#include <QtMultimedia/QMediaPlayer> 
#include <QtMultimedia/QMediaPlaylist> 
#include <QFile> 
#include <QHBoxLayout> 
int main(int argc, char *argv[]) 
{ 
    QApplication a(argc, argv); 

    QWidget *widget=new QWidget; 
    widget->resize(400,300); 

    QMediaPlayer *player=new QMediaPlayer; 
    QVideoWidget *vw= new QVideoWidget; 
    QHBoxLayout *layout=new QHBoxLayout; 

    layout->addWidget(vw); 
    widget->setLayout(layout); 
    player->setVideoOutput(vw); 
    QFile file=("1minute.mp4"); 
    if(!file.open(QIODevice::ReadOnly)) 
     qDebug()<<"Could not open file"; 
    player->setMedia(QUrl::fromLocalFile("1minute.mp4")); 
    player->play(); 
    widget->show(); 
    qDebug()<<player->availableMetaData()<<player->currentMedia().canonicalUrl(); 

    return a.exec(); 
} 

我哪里错了？

Answer 1

终于找到了答案。添加了视频的完整链接，并开始轻松播放。 SO视频链接的代码应为：

player->setMedia(QUrl::fromLocalFile("C:/Users/Administrator/Desktop/1minute.mp4"));