- Qt 5.15
- Qt Multimedia
- Qt Multimedia Module C++ Classes
- Qt 5.15.18 Reference Documentation

# Qt Multimedia Module C++ Classes

The Qt Multimedia module provides audio, video, radio and camera functionality. More...

## Namespaces

QAudio | Contains enums used by the audio classes
QMediaMetaData | Provides identifiers for meta-data attributes
QMultimedia | Contains miscellaneous identifiers used throughout the Qt Multimedia library

## Classes

QAbstractAudioDeviceInfo | Base class for audio backends
QAbstractAudioInput | Access for QAudioInput to access the audio device provided by the plugin
QAbstractAudioOutput | Base class for audio backends
QAbstractPlanarVideoBuffer | Abstraction for planar video data
QAbstractVideoBuffer | Abstraction for video data
QAbstractVideoFilter | Represents a filter that is applied to the video frames received by a VideoOutput type
QAbstractVideoSurface | Base class for video presentation surfaces
QAudioBuffer | Represents a collection of audio samples with a specific format and sample rate
QAudioBuffer::StereoFrame | Simple wrapper for a stereo audio frame
QAudioDecoder | Allows decoding audio
QAudioDecoderControl | Access to the audio decoding functionality of a QMediaService
QAudioDeviceInfo | Interface to query audio devices and their functionality
QAudioEncoderSettings | Set of audio encoder settings
QAudioFormat | Stores audio stream parameter information
QAudioInput | Interface for receiving audio data from an audio input device
QAudioOutput | Interface for sending audio data to an audio output device
QAudioProbe | Allows you to monitor audio being played or recorded
QAudioRecorder | Used for the recording of audio
QAudioSystemPlugin | Abstract base for audio plugins
QCamera | Interface for system camera devices
QCamera::FrameRateRange | A FrameRateRange represents a range of frame rates as minimum and maximum rate
QCameraExposure | Interface for exposure related camera settings
QCameraFocus | Interface for focus and zoom related camera settings
QCameraFocusZone | Information on zones used for autofocusing a camera
QCameraImageCapture | Used for the recording of media content
QCameraImageProcessing | Interface for image processing related camera settings
QCameraInfo | General information about camera devices
QCameraViewfinderSettings | Set of viewfinder settings
QCameraViewfinderSettingsControl2 | Access to the viewfinder settings of a camera media service
QImageEncoderSettings | Set of image encoder settings
QMediaBindableInterface | The base class for objects extending media objects functionality
QMediaContent | Access to the resource relating to a media content
QMediaObject | Common base for multimedia objects
QMediaPlayer | Allows the playing of a media source
QMediaPlaylist | List of media content to play
QMediaRecorder | Used for the recording of media content
QMediaTimeInterval | Represents a time interval with integer precision
QMediaTimeRange | Represents a set of zero or more disjoint time intervals
QSound | Method to play .wav sound files
QSoundEffect | Way to play low latency sound effects
QVideoEncoderSettings | Set of video encoder settings
QVideoFilterRunnable | Represents the implementation of a filter that owns all graphics and computational resources, and performs the actual filtering or calculations
QVideoFrame | Represents a frame of video data
QVideoProbe | Allows you to monitor video frames being played or recorded
QVideoSurfaceFormat | Specifies the stream format of a video presentation surface

## Detailed Description

To enable Qt Multimedia in a project, add this directive into the C++ files:

     #include <QtMultimedia>

To link against the C++ libraries, add the following to your `qmake` project file:

     QT += multimedia