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Whether reaction effects are enabled.

Component Version macOS Windows Linux Server iOS SDK
AVRecorder 13.5 ✅ Yes ❌ No ❌ No ❌ No ✅ Yes
MBS( "AVRecorder.ReactionEffectsEnabled" )




Returns 1, 0 or error.


Whether reaction effects are enabled.
A class property indicating whether the application is suitable for reaction effects, either by automatic gesture detection, or by calls to performEffectForReaction().
Reactions are only rendered when the device's activeFormat.reactionEffectsSupported is also true, which will be reflected by canPerformReactionEffects when the feature is both enabled and supported.

On macOS, Reaction Effects are enabled by default for all applications. On iOS, Reaction Effects are enabled by default for video conferencing applications (apps that use "voip" as one of their UIBackgroundModes). Non video conferencing applications may opt in for Reaction Effects by adding the following key to their Info.plist:


Requires macOS 14.0 or iOS 17.0. Returns 0 on older system versions.


Check whether reactions are enabled:

Set Variable [ $enabled; Value: MBS( "AVRecorder.ReactionEffectsEnabled" ) ]

See also

Release notes

Blog Entries

This function is free to use.

Created 21st October 2023, last changed 21st October 2023

AVRecorder.ReactionEffectGesturesEnabled - AVRecorder.Release