Error about pipeline use

Chanchan

This post is deleted!

Chanchan

This post is deleted!

SGaist

Hi,

First point, the QtGstreamer module is not an official Qt module, it comes from the GStreamer folks. Second thing, the QtGstreamer module is unmaintained. See here for more information.

That said, for your current issue, the first thing I would do is remove that subclass of QCoreApplication. There's rarely a need to do that, and IIRC, your doing it wrong with passing asking argc as a copy, it should be a reference.

Also if you want to handle options in your application, use QCommandLineParser.

One last thing, what errors are you getting ?

Chanchan

Hi !

Sorry @SGaist I didnt receive the notification of your answer, thx for it

There are errors I get :
/Bureau/Qt Clement/QtGsttest/player.cpp:16: erreur : undefined reference to QGst::Ui::VideoWidget::VideoWidget(QWidget*, QFlags<Qt::WindowType>)' /Bureau/Qt Clement/QtGsttest/player.cpp:16: erreur : undefined reference to QGst::Ui::VideoWidget::~VideoWidget()'
/Bureau/Qt Clement/build-QtGsttest-Desktop-Debug/player.o:-1: In function Player::~Player()': /Bureau/Qt Clement/QtGsttest/player.cpp:25: erreur : undefined reference to QGst::Element::setState(QGst::State)'

etc...

I have the same error for each line including "QGst::..."

Chanchan

And I dont really understand, it would be better to delete Qcoreapplication ? Can I use ApplicationSink that way ?
About argc I'm not sure about your point. What do you mean by "reference" ?

Chanchan

I actually, I took my code from this link :
https://gstreamer.freedesktop.org/data/doc/gstreamer/head/qt-gstreamer/html/examples_2recorder_2main_8cpp-example.html

I dont understand why it doesn't work if I juste change my link that's why I am quite lost