I have a USB camera that does not work with Qt. I'm not sure I should file a
bug just yet, as it's not really a standard camera. Below is the code and the
output. How can I go about diagnosing the issue? It's detected and it uses
gstreamer/v4l. The error messages aren't that informative.
import QtQuick 2.12
import QtQuick.Window 2.12
import QtMultimedia 5.12
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Camera {
id: camera
}
VideoOutput {
source: camera
anchors.fill: parent
}
Component.onCompleted:
console.log(JSON.stringify(QtMultimedia.availableCameras))
}
Which produces the following output:
QML debugging is enabled. Only use this in a safe environment.
qml: [{"deviceId":"/dev/video0","displayName":"DFK
27AUJ003","position":0,"orientation":0}]
Unable to query the parameter info: "Invalid argument"
Unable to query the parameter info: "Invalid argument"
Unable to query the parameter info: "Invalid argument"
Unable to query the parameter info: "Invalid argument"
Unable to query the parameter info: "Invalid argument"
libv4l2: error set_fmt gave us a different result then try_fmt!
CameraBin error: "Device '/dev/video0' cannot capture in the specified format"
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