Create a CMSampleBuffer from CVPixelBuffer

createSampleBufferFromPixelBuffer.swift

// Usage
let pixelBuffer: CVImageBuffer? = createPixelBufferFrom(image: image) // see https://gist.github.com/rampadc/10a7dc257552f1fb86c1fcc2d1671bd9
let sampleBuffer: CMSampleBuffer? = createSampleBufferFrom(pixelBuffer: pixelBuffer)

// Function
func createSampleBufferFrom(pixelBuffer: CVPixelBuffer) -> CMSampleBuffer? {
    var sampleBuffer: CMSampleBuffer?
    
    var timimgInfo  = CMSampleTimingInfo()
    var formatDescription: CMFormatDescription? = nil
    CMVideoFormatDescriptionCreateForImageBuffer(allocator: kCFAllocatorDefault, imageBuffer: pixelBuffer, formatDescriptionOut: &formatDescription)
    
    let osStatus = CMSampleBufferCreateReadyWithImageBuffer(
      allocator: kCFAllocatorDefault,
      imageBuffer: pixelBuffer,
      formatDescription: formatDescription!,
      sampleTiming: &timimgInfo,
      sampleBufferOut: &sampleBuffer
    )
    
    // Print out errors
    if osStatus == kCMSampleBufferError_AllocationFailed {
      print("osStatus == kCMSampleBufferError_AllocationFailed")
    }
    if osStatus == kCMSampleBufferError_RequiredParameterMissing {
      print("osStatus == kCMSampleBufferError_RequiredParameterMissing")
    }
    if osStatus == kCMSampleBufferError_AlreadyHasDataBuffer {
      print("osStatus == kCMSampleBufferError_AlreadyHasDataBuffer")
    }
    if osStatus == kCMSampleBufferError_BufferNotReady {
      print("osStatus == kCMSampleBufferError_BufferNotReady")
    }
    if osStatus == kCMSampleBufferError_SampleIndexOutOfRange {
      print("osStatus == kCMSampleBufferError_SampleIndexOutOfRange")
    }
    if osStatus == kCMSampleBufferError_BufferHasNoSampleSizes {
      print("osStatus == kCMSampleBufferError_BufferHasNoSampleSizes")
    }
    if osStatus == kCMSampleBufferError_BufferHasNoSampleTimingInfo {
      print("osStatus == kCMSampleBufferError_BufferHasNoSampleTimingInfo")
    }
    if osStatus == kCMSampleBufferError_ArrayTooSmall {
      print("osStatus == kCMSampleBufferError_ArrayTooSmall")
    }
    if osStatus == kCMSampleBufferError_InvalidEntryCount {
      print("osStatus == kCMSampleBufferError_InvalidEntryCount")
    }
    if osStatus == kCMSampleBufferError_CannotSubdivide {
      print("osStatus == kCMSampleBufferError_CannotSubdivide")
    }
    if osStatus == kCMSampleBufferError_SampleTimingInfoInvalid {
      print("osStatus == kCMSampleBufferError_SampleTimingInfoInvalid")
    }
    if osStatus == kCMSampleBufferError_InvalidMediaTypeForOperation {
      print("osStatus == kCMSampleBufferError_InvalidMediaTypeForOperation")
    }
    if osStatus == kCMSampleBufferError_InvalidSampleData {
      print("osStatus == kCMSampleBufferError_InvalidSampleData")
    }
    if osStatus == kCMSampleBufferError_InvalidMediaFormat {
      print("osStatus == kCMSampleBufferError_InvalidMediaFormat")
    }
    if osStatus == kCMSampleBufferError_Invalidated {
      print("osStatus == kCMSampleBufferError_Invalidated")
    }
    if osStatus == kCMSampleBufferError_DataFailed {
      print("osStatus == kCMSampleBufferError_DataFailed")
    }
    if osStatus == kCMSampleBufferError_DataCanceled {
      print("osStatus == kCMSampleBufferError_DataCanceled")
    }
    
    guard let buffer = sampleBuffer else {
      print("Cannot create sample buffer")
      return nil
    }
    
    return buffer
  }