Add tag to video

Question

I need to write a simple video player that can display some subtitles, a link or an image (for example, on YouTube) at a specific time. I have no idea how to display anything using QVideoWidget. I could not find a useful class for this. Could you give me some advice?

I did it my own way, but after downloading any video, QLabel disappears ...

player->setVideoOutput(vw); playlistView->setMaximumWidth(200); playlistView->setMinimumWidth(300); window = new QWidget; Playerlayout = new QGridLayout; subtitleWidget = new QLabel; subtitleWidget->setMaximumWidth(1000); subtitleWidget->setMaximumHeight(100); subtitleWidget->setStyleSheet("QLabel {background-color : red; color blue;}"); subtitleWidget->setAlignment(Qt::AlignCenter | Qt::AlignBottom); subtitleWidget->setWordWrap(true); subtitleWidget->setText("example subtitle"); Playerlayout->addWidget(vw,0,0); Playerlayout->addWidget(subtitleWidget,0,0); Playerlayout->addWidget(playlistView,0,1,1,2); 

Answer 1

If QVideoWidget does not provide what you need directly, you can always customize the overlay.

The hierarchy of the main layout element will be something like ...

 QWidget layout QVideoWidget subtitle_widget 

In this case, the layout can be either QStackedLayout , using the stacking mode QStackedLayout::StackAll or QGridLayout , while the QVideoWidget and subtitle_widget tags are the same but with the correct z-order.

Transition using QGridLayout ...

 auto *w = new QWidget; auto *l = new QGridLayout(w); auto *video_widget = new QVideoWidget; auto *subtitle_widget = new QLabel; /* * Subtitles will be shown at the bottom of the 'screen' * and centred horizontally. */ subtitle_widget->setAlignment(Qt::AlignHCenter | Qt::AlignBottom); subtitle_widget->setWordWrap(true); /* * Place both the video and subtitle widgets in cell (0, 0). */ l->addWidget(video_widget, 0, 0); l->addWidget(subtitle_widget, 0, 0); 

Subtitles, etc. can now be displayed simply by calling subtitle_widget->setText(...) at the appropriate time.

The same method can be easily extended to overlay other types of information.