Question

以下是播放视频的代码。在运行它时，它表示它无法打开文件。

#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，它开始轻松播放。因此，视频链接的代码应为：

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

无法在Qt中播放视频

1 个答案: