Qt5.11 multimedia and gstreamer connection problem

xQula

Hello everyone.
I am writing an application to output an rtp stream sent by gstreamer.
On qt 5.15, everything starts successfully and outputs the video stream to Qwidget, but on 5.11 there is a problem, on ubuntu 16.04.
Error:
"Streamer; Unable to pause - "gst-pipeline: udpsre port=10334 caps = %22application/x-rtp,
rtph264depay ! decodebin ! videoconvert ! ximagesink name=qtvideosink"
Streamer; Unable to pause - "gst-pipeline: udpsre port=10334 caps
= %22application/x-rtp, media=(string) video, clock-rate=(int) 90000, encoding-name=(string)H 264, payload=(int)96%22 | queue ! rtpjitterbuffer latency=0 !
rtph264depay ! decodebin ! videoconvert ! ximagesink name=qtvideosink" Error:
"There is no URI handler implemented for the gst-pipeline."

const auto port = 5000;
auto m_mediaPlayer = new QMediaPlayer();
auto m_videoWidget = new QVideoWidget();
  m_mediaPlayer->setVideoOutput(m_videoWidget);
  m_mediaPlayer->setMedia(QUrl("gst-pipeline: udpsrc port=" + port + " caps = \"application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96\" ! queue ! rtpjitterbuffer latency=0 ! rtph264depay ! decodebin ! videoconvert ! ximagesink name=qtvideosink"));
  m_mediaPlayer->play();

sending pipeline

gst-launch-1.0 -v ximagesrc startx = 0 endx = 1920 ! video/x-raw,framerate=20/1 ! videoscale ! videoconvert ! x264enc tune=zerolatency bitrate=1000 speed-preset=superfast ! rtph264pay ! udpsink host=127.0.0.1 port=5000

receiving pipeline

gst-launch-1.0 -v udpsrc port=5000 caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! rtph264depay ! decodebin ! videoconvert ! ximagesink

I tried another approach, but unfortunately I also get an error:
"Error:The stream type could not be determined.""
code:

auto process = new QProcess;
auto player = new QMediaPlayer;
auto video = new QVideoWidget() ;
player-›setVideoOutput(video);
QStringList p;
QString z = "gst-launch-1.0":
p « "videotestsrc" << "!" << "appsink"; 
process-›start(z,p) ;
process-›waitForReadyRead) :
player-›setMedia (QMediaContent, process) ; 
player-›play;

Mahyar

سلام من بلد نیستم

Christian Ehrlicher

@Mahyar what's the point of your answer? And this is an english forum.

Axel Spoerl

Qt 5.11 is no longer supported. No point in using it, when everything works on 5.15.

xQula

@Axel-Spoerl Have a nice day. I would be happy to use qt 5.15. o on my linux version, the maximum version from the package manager 5.11 and higher cannot be used.

Axel Spoerl

Then your package manager provides EOL-software!
You can download later versions via the link in @Christian-Ehrlicher's signature.