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Gstreamer Qt6 Mutlimedia Video stops 3 secs before end
I am working with Qt 6.8 (QtWidgets) on an embedded Linux/Yocto device. I want to play a video in my application. It should be possible to play, pause, seek 5 sec forward, seek 5 sec backward and load ...
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Video Output Not Displaying in QVideoWidget with Playbin Element
I am encountering an issue where video playback does not correctly display within a QVideoWidget when using a playbin element in a GStreamer pipeline with Qt's QMediaPlayer. However, when I use a ...
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1
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504
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No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available
I am working on a project on Asahi Linux on Macbook air m1 and tried Camera class in qml file.
Tried to load qml in pyside 6 using qqmlapplicationengine
.........
CaptureSession {
camera: ...
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94
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QT5multimedia not configure with my build image
ERROR: inf-multipara-mon-fw-ui-app-1.0.0-r0 do_configure: ExecutionError(‘/home/kalpan/silmates-yocto/sm-yocto/build/tmp/work/cortexa53-sm-linux/inf-multipara-mon-fw-ui-app/1.0.0-r0/temp/run....
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1
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140
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FFMPEG - Struggling to find correct input audio codec parameters on macOS
I am trying to read my external stereo microphone with ffmpeg within my Qt Windows+macOs application, but I am struggling to obtain consistent correct input codec parameters on macOs. My findings and ...
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3
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3k
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PyQt6 6.7.0 - How to fix error: No QtMultimedia backends found
Problem on Windows 10 and Windows 11 using Anaconda.
Here is the full error message for PyQt6=6.7.0:
No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and ...
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1
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155
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Saving a QImage sequence as video in QT C++
Is there a way to save a sequence of QImages as video in QT C++?
In fact I am trying to grab frames from camera, add some overlay and then save as video. The tricky part is that QMediaRecorder does ...
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1
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755
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How to receive frame from QCamera directly in Qt6?
I am trying to capture image without QVideoWidget. But it seems does not work.
When I call capture() after camera->start() , it gives me an error: Camera is not ready.
// Search camera and display ...
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2
answers
303
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QMediaPlayer freezes when changing source a second time
The first time I call setSource() everything goes smoothly. However if I try to call setSource() after media has started playing, even when calling stop() beforehand, the program freezes.
The specific ...
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226
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QT5 QMediaPlayer not displaying video in qt based C++ code built using visual Studio 2017
I have a C++ on windows GUI project which we build using visual studio 2017. The GUI is written using QT 5. We dont use qt creator.
In one of the widget I have to play a video using QT for which I am ...
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1
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1k
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How to stream video from an IP camera using PyQt5 QtMultimedia?
The task is to stream an image from 5 IP cameras using QtMultimedia from the PyQt5 framework. Initially I tried to use OpenCV, but the parallel broadcast of 5 video streams reduced fps. We decided to ...
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97
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C++ Developing a Scrolling Audio Timeline
I am developing a QT multimedia audio application that needs to have an audio monitor feature. The application currently has regular callback (Signals/Slots) with PCM data samples (44.1khz, Stereo). ...
1
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109
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How to further debug QAudioDecoder when it claims it has QAudioDecoder::NoError
I am trying to make a small piece of code work.
It should open an mp3 file and read PCM samples from it (while converting the mp3 format to the PCM with requested parameters).
Looks like this:
QFile ...
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1
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600
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What exactly is the presentation time returned by QVideoFrame::startTime() when acquiring from a webcam?
I was able to acquire a QVideoFrame through a QVideoSink from a webcam, but I cannot understand (after a bit of googling) what exactly QVideoFrame::startTime() is returning to me. According to the doc:...
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Converting QAudioFormat::SampleFormat::FLoat to QAudioFormat::SampleFormat::Int32
I am writing a QT multimedia audio test application. As part of the application, I need to process each audio sample from the microphone directly. The audio source device signals QAudioBuffer's at ...