Playing a GStreamer Pipeline on QGraphicsView

[tungdil]

Hey, I'm trying to run a basic GStreamer pipeline on the QGraphicsView widget but when I execute the program I get the following error:

GStreamer; Unable to pause - "gst-pipeline: videotestsrc ! videoconvert ! ximagesink name=%22qtvideosink%22"
GStreamer; Unable to pause - "gst-pipeline: videotestsrc ! videoconvert ! ximagesink name=%22qtvideosink%22"
Error: "No URI handler implemented for \"gst-pipeline\"."

You can see my code down below:
header (.h) file

    QMediaPlayer *player_1 = new QMediaPlayer(this, QMediaPlayer::VideoSurface);

    QGraphicsVideoItem *item_1 = new QGraphicsVideoItem;

    QGraphicsScene *scene_1 = new QGraphicsScene;

.cpp file

    ui->graphicsView->setScene(scene_1);
    ui->graphicsView->scene()->addItem(item_1);

    player_1->setVideoOutput(item_1);
    item_1->setSize(QSizeF(width, height));
    player_1->setMedia(QUrl("gst-pipeline: videotestsrc ! videoconvert ! ximagesink name=\"qtvideosink\""));
    player_1->setMuted(true);
    player_1->play();

I want to use QGraphicsView because it is available in the UI Designer so I can manipulate it easily. I've tried different sinks but I either get this error or I get an empty screen.
Thanks.

[JoeCFD]

@tungdil Qt5 or Qt6?

[tungdil]

@JoeCFD Qt 5.15.3

[JoeCFD]

@tungdil LInux or Windows?

[SGaist]

Hi,

What happens if you use the minimal example from the documentation:

player = new QMediaPlayer;
videoWidget = new QVideoWidget;
videoWidget->show();
player->setVideoOutput(videoWidget);
player->setMedia(QUrl("gst-pipeline: videotestsrc ! xvimagesink name=\"qtvideosink\""));
player->play();

?

[tungdil]

@JoeCFD Ubuntu 22.04

[tungdil]

@SGaist

I get these two windows and the output below on the application output

GStreamer; Unable to pause - "gst-pipeline: videotestsrc ! xvimagesink name=%22qtvideosink%22"
GStreamer; Unable to pause - "gst-pipeline: videotestsrc ! xvimagesink name=%22qtvideosink%22"
Error: "No URI handler implemented for \"gst-pipeline\"."

[lokeshkr]

@tungdil Hi, I'm stuck in same situation. Did you manage to resolve this error : "No URI handler implemented for "gst-pipeline"."
??

[SGaist]

@lokeshkr Hi,

which version of Qt are you using ?