I'm using QMediaPlayer and QGraphicsVideoItem to play a movie.

I initialize the player like this:

QMediaPlayer *player = new QMediaPlayer();
player->setMedia(url);
QGraphicsVideoItem *video_item = new QGraphicsVideoItem();
player->setVideoOutput(video_item);

At this point, I'd like to be able to get the nativeSize() and
duration() of the movie. However, it seems these values aren't
available until some time later (after my application has returned
through the event loop; and after the mediaStatusChanged signal is
emitted from the player).

Is there any way to force the media player and/or graphics video item
to calculate these values immediately (synchronously)?
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