Such fees are not covered by the Qt licenses. This can apply to any implementation, also if the implementation is provided as an operating system service, through a third party library, or through any of Qt Multimedia's backends. Note that video compression standards, such as the H.264 media compression standard, may be covered by patents and can incur royalty fees. See the FFmpeg licensing page for further details. The FFmpeg backend shipped with the Qt binary packages is configured to not contain any of the components that are available under GPLv2 only. Some optional components of FFmpeg are only available under GPL. FFmpeg is licensed under LGPLv2.1, GPLv2, or later versions of the licenses. The FFmpeg backend uses the FFmpeg framework. Since Qt 5.6, these free software licenses are GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. In addition, it is available under free software licenses. The Qt Multimedia module is available under commercial licenses from The Qt Company. The other classes are used for capturing audio and video content, where the QMediaCaptureSession is the central class managing the whole capture/recording process. Sends raw audio data to an audio output device.įor playback QMediaPlayer, QAudioOutput and QVideoOutput contain all the required functionality. Record media content from a capture session.Īccess and render individual video frames. Display video from a media player or a capture session.Īccess an audio input (microphone) connected to the system.Īccess an audio output (speaker, headphone) connected to the system.
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