ubuntu_22_usb_camera_qt5_gstreamer

Display USB camera on ubuntu22 with Qt
OS: Ubuntu 22.04.3
Qt Creator 4.11.1, Qt 5.14.1, GCC 5.3.1

There are 2 way to use:
(1) overlay
(2) QVideoWidget
From QT5.12.2, there is a quick call.
QMediaplayer->setMedia(QUrl("gst-pipeline: videotestsrc ! videoconvert ! xvimagesink name=\"qtvideosink\""));

Overlay and USB camera


QVideoWidget and videotestsrc


QVideoWidget and USB camera

Just run executable file

sudo apt-get update
sudo apt-get install libqt5widgets5
sudo apt-get install libqt5multimedia5 libqt5multimediawidgets5
sudo apt-get install libqt5multimedia5-plugins

Compile the source code

sudo apt-get update

sudo apt-get install build-essential
sudo apt-get install libfontconfig1
sudo apt-get install mesa-common-dev
sudo apt-get install libglu1-mesa-dev
sudo apt-get install libx11-dev libxext-dev libxtst-dev

download and install qt-opensource-linux-x64-5.14.2.run

sudo apt-get install libqt5widgets5
sudo apt-get install libqt5multimedia5 libqt5multimediawidgets5
sudo apt-get install libqt5multimedia5-plugins

sudo apt-get install libqt5gstreamer-dev