[Bug] Preview and video stabilization do not work in any mode

[denis-severinov]

Preview and video stabilization do not work in any mode. I configure the session in viewDidLoad, launch the camera in viewWillApear.

Code:

        nextLevel.captureMode = .video

        nextLevel.videoConfiguration.preset = .high
        nextLevel.videoConfiguration.bitRate = 5500000
        nextLevel.videoConfiguration.maxKeyFrameInterval = 60        
        nextLevel.videoConfiguration.profileLevel = AVVideoProfileLevelH264HighAutoLevel
        nextLevel.videoConfiguration.maximumCaptureDuration = CMTimeMakeWithSeconds(maxDuration, preferredTimescale: 600)
        
        nextLevel.audioConfiguration.bitRate = 44000
        
        nextLevel.exposureMode = .continuousAutoExposure
        nextLevel.videoStabilizationMode = .cinematicExtended
        nextLevel.automaticallyConfiguresApplicationAudioSession = false
        nextLevel.focusMode = .continuousAutoFocus

internal func updateVideoOutputSettings() {
        if let videoOutput = self._videoOutput {
            if let videoConnection = videoOutput.connection(with: AVMediaType.video) {
                if videoConnection.isVideoStabilizationSupported {
                    videoConnection.preferredVideoStabilizationMode = self.videoStabilizationMode
                }
            }
        }
    }

Line videoConnection.preferredVideoStabilizationMode = self.videoStabilizationMode is unreachable because video connection doesn't exist. So set videoStabilizationMode in viewDidApear and it will work

[dstuecken]

I figured out that you need to set it after setting up and starting the AV session.