- Qt 6.12
- Qt Multimedia
- Qt Multimedia on macOS and iOS
- Qt 6.12.0 Reference Documentation

Qt Multimedia Widgets ◦ Platform Notes - WebAssembly

# Qt Multimedia on macOS and iOS

This page covers the availability of Qt Multimedia features on iOS and macOS.

## Limitations

Since Qt Multimedia for iOS uses the camera and microphone, the `Info.plist` assigned to QMAKE_INFO_PLIST in the project file must contain the keys `NSCameraUsageDescription` and `NSMicrophoneUsageDescription`. Otherwise, the application will abort on startup. See Info.plist documentation from Apple for more information regarding this key.

## Use of FFmpeg libraries on iOS

FFmpeg binaries from the online installer must be embedded into the application's bundle. To embed these libraries, you can add the qt6_add_ios_ffmpeg_libraries() command to the app's CMakeLists.txt file:

     qt_add_ios_ffmpeg_libraries(mytarget)

When using QMake, add the following to your `.pro` file:

     CONFIG += add_ios_ffmpeg_libraries

Note: The FFmpeg binaries from the online installer are built for arm64 and x86_64-simulator to ensure they pass validation with Apple Store Connect and can be used when running the iOS simulator.

Note: A limitation in Qt Multimedia builds that include FFmpeg support, is that FFmpeg libraries must be provided at link-time when building iOS applications. Failing to do so will result in linker errors. This includes the Qt Multimedia builds supplied by Qt Maintenance Tool. Applications that use such builds are required to call qt_add_ios_ffmpeg_libraries, or otherwise link their own FFmpeg libraries. As a consequence, application developers that wish to deploy iOS applications without FFmpeg, must build their own build of Qt Multimedia without FFmpeg support.

See also qt_add_ios_ffmpeg_libraries().

Qt Multimedia Widgets ◦ Platform Notes - WebAssembly