Re: [Mingw-cross-env-list] Does QtMultimedia work for anyone?

[Nikos Chantziaras]

On 03/06/13 10:14, Mark Brand wrote:
> On Monday 03 June 2013 04:21:02 Nikos Chantziaras wrote:
> > Since I'm not able to figure out how to get gstreamer to work with MXE,
> > I'm now trying Qt5 and its multimedia module.  So I've build that and
> > then compile the two example programs that play video.  Neither one
> > works.  The error message says:
> >
> >     The QMediaPlayer object does not have a valid service.
> >     Please check the media service plugins are installed.
> >
> > What is missing? [...]
>
> There's a good chance you're pioneering if you are using static QtMultimedia.
> I haven't tried multimedia support since phonon first appeared in Qt 4 several
> years ago. You probably have to link explicitly to the DirectShow plugin by
> adding QTPLUGINS to your .pro file [1]. (In Qt 5, qmake should take care of the
> Q_IMPORT_PLUGIN() macro.) Even then I don't know if it will work. Please let
> us know how it works out.

Ah yes.  Qt plugins.  They're in 
usr/i686-pc-mingw32/qt5/plugins/mediaservice:

  dsengine.prl
  libdsengine.a
  libqtmedia_audioengine.a
  qtmedia_audioengine.prl

So I've added them:

  QTPLUGIN += dsengine qtmedia_audioengine

That fixed it.  Though it doesn't play any videos when running it in 
Wine or in XP and 7 in VMWare.  It only works when running in a native 
Windows environment.  But this is not an MXE issue.  Same thing happens 
with the 5.1.0 beta Windows release.