Multimedia support in Qt is provided by the Qt Multimedia module. The Qt Multimedia module provides a rich feature set that enables you to easily take advantage of a platform's multimedia capabilities, such as media playback and the use of camera devices.
Here are some things you can do with the Qt Multimedia APIs:
- Access raw audio devices for input and output.
- Play low latency sound effects.
- Play media files in playlists (such as compressed audio or video files).
- Record audio and compress it.
- Use a camera, including viewfinder, image capture, and movie recording
- Decode audio media files into memory for processing.
The Qt Multimedia APIs are categorized into three main components. More information specific to each component is available in the overview pages. You can also take a look at some recipes.
For some quick recipes, see this table:
The Qt Multimedia APIs build upon the multimedia framework of the underlying platform. This can mean that support for various codecs, or containers will vary between machines. This support depends on what the end user has installed.
If you previously used Qt Multimedia in Qt 5, see Changes to Qt Multimedia for more information on what has changed, and what you might need to change when porting code to Qt 6.
The QML types are accessed by using:
Contains enums used by the audio classes
Represents a collection of audio samples with a specific format and sample rate
Implements decoding audio
Information about audio devices and their functionality
Stores audio stream parameter information
Represents an input channel for audio
Represents an output channel for audio
Interface for sending audio data to an audio output device
Interface for receiving audio data from an audio input device
Interface for system camera devices
General information about camera devices
Describes a video format supported by a camera device
The base class for all graphics effects
Graphics item which display video produced by a QMediaPlayer or QCamera
Used for the recording of media content
Allows capturing of audio and video content
Information about available multimedia input and output devices
Describes an encoding format for a multimedia file or stream
Allows the playing of a media files
Used for encoding and recording a capture session
Represents a set of zero or more disjoint time intervals
QMediaTimeRange::Interval class represents a time interval with integer precision
Base class for audio backends
Access for QAudioSource to access the audio device provided by the plugin
Way to play low latency sound effects
Enables optimized drawing of text when the text and its layout is updated rarely
Represents a frame of video data
Specifies the stream format of a video presentation surface
Represents a generic sink for video data
Widget which presents video produced by a media object
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