Not able to apply CIFilters on live camera

[nilisha-simformsolutions]

I have tried with this particular code but it freezes the camera when we record a video with fast and slow motion and also there are so many bugs occurs like after record a video filter is applied only on half part of the video and sometimes app crashed.

// enabled by isCustomContextVideoRenderingEnabled
func nextLevel(_ nextLevel: NextLevel, renderToCustomContextWithImageBuffer imageBuffer: CVPixelBuffer, onQueue 
    queue: DispatchQueue) {
        DispatchQueue.main.async {
            nextLevel.videoCustomContextImageBuffer = self.renderWithTransformationWithPixelBuffer(sampleBuffer: imageBuffer)
        }
}

func renderWithTransformationWithPixelBuffer(sampleBuffer: CVPixelBuffer) -> CVPixelBuffer {
        var ciImage = CIImage(cvPixelBuffer: sampleBuffer)
        if let filteredCIImage = filteredCIImage(ciImage) {
            ciImage = filteredCIImage
        }
        let ciContext = nextLevel.session?.ciContext
        ciContext?.render(ciImage, to: sampleBuffer, bounds: ciImage.extent, colorSpace: CGColorSpaceCreateDeviceRGB())
        return sampleBuffer
}

I have referred this - #18

[NirajCapermint]

@nilisha-simformsolutions did you find any solution?

[patthehuman]

if you did some research you would probably find this pretty easily:
#18