AVPlayer::setVolume and setMute also exist on iOS, so no need to ifdef them to be OS X-only. As they require iOS 7.0, add runtime checks to ensure that the methods exist. Task-number: QTBUG-39240 Change-Id: I10810705cef8e5d8c18e4c79a15fa06425ea57f9 Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com> Reviewed-by: James Turner <james.turner@kdab.com>