> -----Original Message----- > From: Development [mailto:development-bounces+mitch.curtis=qt.io@qt- > project.org] On Behalf Of Massimo Callegari via Development > Sent: Wednesday, 27 April 2016 12:28 PM > To: Denis Shienkov <denis.shien...@gmail.com>; development@qt-project.org > Subject: Re: [Development] QtMultimedia && QML - hard performance > regressions on Windows > > Hey Denis, welcome to the "QtMultimedia lovers" club :) > > Good luck with your remarks, most likely nobody will care. > It seems that the primary role of QtMultimedia is to capture input video. > All the rest doesn't matter. > > I've opened a number of tickets and none of them have been solved: > https://bugreports.qt.io/browse/QTBUG-37004 (Feb 2014) > https://bugreports.qt.io/browse/QTBUG-37005 (Feb 2014) > https://bugreports.qt.io/browse/QTBUG-37882 (Mar 2014) > https://bugreports.qt.io/browse/QTBUG-42034 (Oct 2014) > https://bugreports.qt.io/browse/QTBUG-47284 (Jul 2015) > > 3 on 5 marked as P2. > > I would also add a recent discovery of how non-cross platform QtMultimedia > is. > The use case is starting a video in fullscreen on a second monitor > (QtWidget way). > In Linux and OSX you have to do > m_videoWidget->setGeometry(rect); > m_videoWidget->setFullScreen(true);and on Windows m_videoWidget- > >setFullScreen(true); > m_videoWidget->setGeometry(rect); > > I didn't even open a ticket for that, cause I got tired to waste my time > on this topic.
I didn't look at the other bugs, but QTBUG-37004 seems like it would pretty easy to contribute a fix yourself. Why waste your time and energy being outraged when you could be fixing it? Seems like a far more effective way of getting things fixed in an open source project. As said in the bug report, higher priority issues are being worked on. > > ________________________________ > Da: Denis Shienkov <denis.shien...@gmail.com> > A: "development@qt-project.org" <development@qt-project.org> > Inviato: Mercoledì 27 Aprile 2016 11:37 > Oggetto: [Development] QtMultimedia && QML - hard performance regressions > on Windows > > > > Hi developers. > > I faced with a big problem with the video playback performance, when I > try to open the mp4 video file from any of QML video examples. I have a > high CPU loading (~40%) and the video is freezing and jerks. But the C++ > media player works satisfactory, more or less tolerably (on point 3 from > the 1-5 points)... > > It is impossible to use at all in QML, I face more and more with the > surprises of QtMultimedia, and disappointed more and more... > > WTF ? What sense in QtMultimedia if it does not work as expected? > > PS: I have created a bug: https://bugreports.qt.io/browse/QTBUG-53019 > > BR, > Denis > > > _______________________________________________ > Development mailing list > Development@qt-project.org > http://lists.qt-project.org/mailman/listinfo/development > _______________________________________________ > Development mailing list > Development@qt-project.org > http://lists.qt-project.org/mailman/listinfo/development _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
