Qt Multimedia

@keksi-venksi said in How to detect Stream is not playing QMediaplayer: Meanwhile Im also facing the same issue , I use m_mediaplyar.play() but nothing played in the screen So you are saying you get "DirectShowPlayerService::doSetUrlSource: Unresolved error code 80004005" if i try to do a "setmedia" on my mediaplayer to change url and get a good one just like the OP, right?

Hi, That's surprising indeed. Did you already check the bug report system ?

@JoeCFD Thank you, it does seem to be a Qt issue with Gnome. I had issues with QVideoWidget, QWidget::createWindowContainer and QColorDialog::getColor corrupting the rendering of my application. Out of desperation I switched everything to KDE and it works as expected. The raspberrypi was my fault and fixed it by explicitly specifying the backend

It works in release mode, but not in debug mode. The latest version is the same

Were you able to find a solution to this? Currently stuck on this. I see my soundcard when doing aplay -l and arecord -l. I am also able to play audio with gst-launch-1.0 playbin. Alsamixer shows me an entire array of controls. However, Qt doesn't seem to recognize this.

Nice ! Thanks for the feedback That was more or less what I wanted to suggest but I did not know about QDataFrameInput yet thus it's even simpler :-)

hello,After using this code, the interface camera mirrored

Ok, thank you for your response. I created a bug report. https://bugreports.qt.io/browse/QTBUG-126359

now, I resolved it by "pacman -S qt6-declarative"

@SGaist said in Want to show detect camera using QCamera: What are you doing differently between your code and the working example ? I assume @xylo212 is talking about a different camera... the camera from the computer works, while the "oven camera" (whatever it is) does not... maybe driver or connection issue. No one can tell if @xylo212 doesn't provide more info.

@JoeCFD Yes, I figured that out. I tried to set the environment variable QT_MEDIA_BACKEND to gstreamer and managed to have a glimpse of video stream in Qt 6. However I had a lot of lost packets, lantency issues and network errors (that I don't have in Qt 5). Another problem of Qt 6 is that I need a QCamera object to be able to record thorugh QMediaCaptureSession and QMediaRecorder and I don't know how to set a QCamera with a remote IP camera. So I decided to go back to Qt 5 (where I can at least successfully see the video stream). For now I'm trying to record the video stream via a QProcess that executes the Linux command ffmpeg -rtsp_transport tcp -i rtsp://<user>:<password>@<IP>:<port> -acodec copy -vcodec mpeg4 videotest.mp4 It seems that it works this way, but it's only going to work on Linux machines.

Nevermind, I figured it out... So it seems that setSource reasonably expects you to actually have stopped the media beforehand. Doing so and adding a small wait works like a charm and indeed plays it asynchronously! Relevant example. m_player->stop(); QThread::msleep(100); m_player->setSource(url); m_player->play();

Hi, if you have to straming audio and video files you could use live555 on server side and, client side, only QMediaPlayer using rtsp.