无法将多媒体窗口小部件添加到Qt Creator C ++项目

Question

I am trying to compile and run the official Media Player Example in Qt: http://doc.qt.io/qt-5/qtmultimediawidgets-player-example.html for a Raspberry Pi running Raspbian Jessie. I still have no success: when I build the project, the following error appears:

:-1: error: Unknown module(s) in QT: multimedia multimediawidgets

This is referred to the .pro code:

QT += multimedia \

My Qt should be up to date, and I don't know where the problem can be. Could anyone help please? Thanks!

EDIT: I installed "sudo apt-get install qtmultimedia5-dev" but without success. Is it the right module to install?

EDIT 2: the qtmultimedia5 packet seems to be well installed, but the "Unknown module(s)" error in Qt remains! Perhaps after its installation the library has to be added manually in some way? Please help!

Answer 1

I have a raspberry 1 model B, and the first thing I wanted to do was a media center from scratch. Of course, in Qt.

Sadly, I struggled a lot before giving up and falling back on a omxplayer wrapper which I am still developing.

However, a few weeks ago gstreamer still did not support omx backend (so you cannot play decently any kind of media).

Note that you need to buy MPEG-2 and VC-1 licences to gain hardware accelaration for media, otherwise you can easily get very low fps (and bad audio) while playing mpegs and so on.

Take a look at this page for a recent Qt version.

Good luck!