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

Do you want to as below?

Instead of using CIBlendWithMask, you should use CISourceOverCompositing, try this:

//4.
CIFilter *filter = [CIFilter filterWithName:@"CISourceOverCompositing"];
[filter setValue:maskImage forKey:kCIInputImageKey];
[filter setValue:inputImage forKey:kCIInputBackgroundImageKey];
CIImage *outputImage = [filter outputImage];