Dear UIKit/AVFoundation Engineers, Please look into this question, still looking for an answer.

I was able to fix this by connecting inputNode and outputNode of AVAudioEngine instead of playerNode and mixerNode. I had misconception about playerNode which was cleared from WWDC 2014 video.

It's down again for the past 7 days or more. No idea when it will be back.

Dear @AVFoundation/CoreAudio Engineers, can you please answer this question?

Corrections: in the outputImage code, it is `return CIMetalRedColorKernel.kernel.apply(extent: dod, roiCallback: { index, rect in             return rect         }, arguments: [inputImage])

@MediaEngineer. Filed bug FB9877123 with sample code with all info about reproducing, including demo video. As you might see in the sample code, the problem is not reproducible if you comment the following line in the code. playerItem.seekingWaitsForVideoCompositionRendering = true Please suggest appropriate workaround.

This has become rampant on iOS 15 devices as well, particularly iPhone X. Not sure what is the fix!

Did you manage to find this? I also need to know what kind of spline function CIToneCurve uses.