C++ 类为多媒体内容提供了更多控制，相比 QML 替代。若应用程序服务于复杂用例，譬如解码媒体文件、访问视频或音频缓冲，请使用 C++ 替代。有关 C++ 类支持的复杂音频、视频及摄像头用例的更多细节，参考 Multimedia 概述 .
| QAudio | 包含用于音频类的枚举 |
| QAudioBuffer | 表示具有特定格式和采样率的一批音频样本 |
| QAudioDecoder | Implements decoding audio |
| QAudioDevice | Information about audio devices and their functionality |
| QAudioFormat | 存储音频流参数信息 |
| QAudioInput | Represents an input channel for audio |
| QAudioOutput | Represents an output channel for audio |
| QAudioSink | 把音频数据发送到音频输出设备的接口 |
| QAudioSource | 从音频输入设备接收音频数据的接口 |
| QCamera | 系统摄像头设备接口 |
| QCameraDevice | 有关摄像头设备的一般信息 |
| QCameraFormat | Describes a video format supported by a camera device |
| QImageCapture | 用于录制媒体内容 |
| QMediaCaptureSession | Allows capturing of audio and video content |
| QMediaDevices | Information about available multimedia input and output devices |
| QMediaFormat | Describes an encoding format for a multimedia file or stream |
| QMediaMetaData | Provides meta-data for media files |
| QMediaPlayer | Allows the playing of a media files |
| QMediaRecorder | Used for encoding and recording a capture session |
| QMediaTimeRange | 表示一组零个或多个不相交的时间间隔 |
| QMediaTimeRange::Interval | QMediaTimeRange::Interval class represents a time interval with integer precision |
| QScreenCapture | Used for capturing a screen |
| QSoundEffect | 播放低延迟音效的办法 |
| QVideoFrame | 表示视频数据帧 |
| QVideoFrameFormat | 指定视频呈现表面的流格式 |
| QVideoSink | Represents a generic sink for video data |
| QGraphicsVideoItem | Graphics item which display video produced by a QMediaPlayer or QCamera |
| QVideoWidget | 呈现媒体对象产生视频的小部件 |
| QAmbientSound | A stereo overlay sound |
| QAudioEngine | Manages a three dimensional sound field |
| QAudioListener | Defines the position and orientation of the person listening to a sound field defined by QAudioEngine |
| QAudioRoom | |
| QSpatialSound | A sound object in 3D space |
