Render dynamic text onto CVPixelBufferRef while recording video

Question

I\'m recording video and audio using AVCaptureVideoDataOutput and AVCaptureAudioDataOutput and in the captureOutput:didOutputSampleBuffer:fromCon

Answer 1

Swift version of Bannings's answer.

        let combinedFilter = CIFilter(name: "CISourceOverCompositing")!
        combinedFilter.setValue(maskImage.oriented(.left), forKey: "inputImage")
        combinedFilter.setValue(inputImage, forKey: "inputBackgroundImage")

        let outputImage = combinedFilter.outputImage!

        let tmpcontext = CIContext(options: nil)
        tmpcontext.render(outputImage, to: pixelBuffer, bounds: outputImage.extent, colorSpace: CGColorSpaceCreateDeviceRGB())