- Qt 6.12
- Qt Multimedia
- QML Types
- cameraDevice
- Qt 6.12.0 Reference Documentation

# cameraDevice QML Value Type

Describes a camera device. More...

Import Statement: | `import QtMultimedia`
In C++: | QCameraDevice

## Properties

- correctionAngle : QtVideo::Rotation `(since 6.7)`
- description : string
- id : string
- isDefault : bool
- position : enumeration
- videoFormats : CameraFormat

## Detailed Description

The cameraDevice value type describes the properties of a camera device that is connected to the system.

The cameraDevice instance retains its properties throughout its lifetime, even if the corresponding physical device is disconnected or its settings are modified. To keep track of updated properties, the user should load new instances of cameraDevice from MediaDevices when the relevant signals are fired.

Two cameraDevice instances can be compared for equality. They are considered equal if they represent the same physical device, regardless of whether their properties are equal or up-to-date.

The list of camera devices can be queried from the MediaDevices type. To select a certain camera device set it as the device on Camera.

     CaptureSession {
         camera: Camera {
             cameraDevice: mediaDevices.defaultVideoInput
         }
     }
     MediaDevices {
         id: mediaDevices
     }

## Property Documentation

### correctionAngle : QtVideo::Rotation `[read-only, since 6.7]`

Returns the rotation angle needed to compensate for the physical camera rotation of the camera compared to its native orientation. In other words, the property represents the clockwise angle through which the output image needs to be rotated to be upright on the device screen in its native orientation. Since correctionAngle is relative to the native orientation, this value does not change with altering the device orientation (portrait/landscape). The correction angle may be non-zero mostly on Android, where native and camera orientations are defined by the manufacturer.

This property was introduced in Qt 6.7.

### description : string `[read-only]`

Holds a human readable name of the camera.

Use this string to present the device to the user.

### id : string `[read-only]`

Holds the device id of the camera

This is a unique ID to identify the camera and may not be human-readable.

### isDefault : bool `[read-only]`

Is true if this is the default camera device.

### position : enumeration `[read-only]`

Returns the physical position of the camera on the hardware system.

The returned value can be one of the following:

Constant | Description
--- | ---
`cameraDevice.UnspecifiedPosition` | The camera position is unspecified or unknown.
`cameraDevice.BackFace` | The camera is on the back face of the system hardware. For example on a mobile device, it means it is on the opposite side to that of the screen.
`cameraDevice.FrontFace` | The camera is on the front face of the system hardware. For example on a mobile device, it means it is on the same side as that of the screen. Preview of front-facing cameras is flipped around the vertical axis to display the video output as a mirror, whereas this flipping is not performed during recording.

### videoFormats : CameraFormat `[read-only]`

Holds the video formats supported by the camera.