QMediaPlayer can't play stream

QMediaPlayer can't play QIODevice:

QMediaPlayer* player = new QMediaPlayer(this);
QFile* ioDevice = new QFile("/home/fff/Documents/acca12c4e0bf.mp3");
ioDevice->open(QIODevice::ReadWrite);
player->setMedia(QMediaContent(), ioDevice);
player->play();

but player->setMedia(QUrl("file:/home/fff/Documents/acca12c4e0bf.mp3")) work correct.