Details
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Bug
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Resolution: Unresolved
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P3: Somewhat important
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None
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6.6.1
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None
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openSUSE Tumbleweed 20240110
Using Qt version 6.6.1 in /usr/lib64
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Linux/X11
Description
Run the following code
#include <QCoreApplication> #include <QMediaPlayer> #include <QAudioOutput> #include <QTimer> int main(int argc, char *argv[]) { QCoreApplication app(argc, argv); auto *audioOutput = new QAudioOutput{}; auto *mediaPlayer = new QMediaPlayer{}; mediaPlayer->setAudioOutput(audioOutput); const QUrl mediaSource{QStringLiteral("file:///path/to/shortMediaFile.mp3")}; mediaPlayer->setSource(mediaSource); mediaPlayer->play(); QObject::connect(mediaPlayer, &QMediaPlayer::mediaStatusChanged, mediaPlayer, [mediaPlayer, mediaSource]() { if (mediaPlayer->mediaStatus() == QMediaPlayer::EndOfMedia) { qInfo() << "Media ended" << mediaPlayer->mediaStatus() << mediaPlayer->playbackState() << mediaPlayer->position(); mediaPlayer->setSource(mediaSource); qInfo() << "set source" << mediaPlayer->mediaStatus() << mediaPlayer->playbackState() << mediaPlayer->position(); // mediaPlayer->setPosition(0); // uncomment to make things work // qInfo() << "set position" << mediaPlayer->mediaStatus() << mediaPlayer->playbackState() << mediaPlayer->position(); mediaPlayer->play(); qInfo() << "set play" << mediaPlayer->mediaStatus() << mediaPlayer->playbackState() << mediaPlayer->position(); } }); return app.exec(); }
The media only plays once and the output is this (repeats):
GPU at BusId 0x8 doesn't have a supported video decoder [mjpeg_cuvid @ 0x592900] Codec mjpeg_cuvid is not supported. Media ended QMediaPlayer::EndOfMedia QMediaPlayer::StoppedState 10582 set source QMediaPlayer::LoadedMedia QMediaPlayer::StoppedState 0 [mjpeg_cuvid @ 0x5d1f80] Codec mjpeg_cuvid is not supported. set play QMediaPlayer::BufferedMedia QMediaPlayer::PlayingState 0 Media ended QMediaPlayer::EndOfMedia QMediaPlayer::StoppedState 10582 set source QMediaPlayer::LoadedMedia QMediaPlayer::StoppedState 0 [mjpeg_cuvid @ 0x5d1f80] Codec mjpeg_cuvid is not supported. set play QMediaPlayer::BufferedMedia QMediaPlayer::PlayingState 0
Usually I would expect the playback to start from the beginning, as this is what happens when setting the source & calling play for other media statuses (e.g. QMediaPlayer::Buffered). This is also what happens when setting a new source when the mediaStatus is EndOfMedia
I would also say that setting the source to the same value can be a bit ambiguous, and personally I wasn't sure what to expect when trying this. I think that this special case should be documented in the QMediaPlayer source property so that people doing stuff like this know exactly what the expected behaviour is.