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c++qtaudioqt5qtmultimedia

How to get length of a song using Qt 5.1?

How can I get the length of a song in Qt 5.1 API? I think I can read it using Length metadata but I'm not sure if this metadata will be available for all audio files.

Solution

  • You seem to be looking for the duration property.

    This would be the QML solution:

    duration : int

    This property holds the duration of the media in milliseconds.

    If the media doesn't have a fixed duration (a live stream for example) this will be 0.

    This would be the C++ solution:

    qint64 QAudioBuffer::duration() const

    Returns the duration of audio in this buffer, in microseconds.

    This depends on the /l format(), and the frameCount().