# vImageConverter_CreateForCGToCVImageFormat(_:_:_:_:_:) Creates a vImage converter that converts a Core Graphics-formatted image to a Core Video-formatted image. ``` func vImageConverter_CreateForCGToCVImageFormat(_ srcFormat: UnsafePointer, _ destFormat: vImageCVImageFormat, _ backgroundColor: UnsafePointer!, _ flags: vImage_Flags, _ error: UnsafeMutablePointer!) -> Unmanaged! ``` ## Parameters `srcFormat` The [`vImage_CGImageFormat`](/documentation/Accelerate/vImage_CGImageFormat) structure that describes the pixel format associated with the source buffers. `destFormat` The [`vImageCVImageFormat`](/documentation/Accelerate/vImageCVImageFormat) structure that describes the pixel format associated with the destination image buffers. `backgroundColor` In cases where the source format has an alpha channel and the destination doesn’t (or is or ) the conversion removes the alpha channel by flattening it against an opaque background color. The background color is specified as three values corresponding to red, green, and blue in sRGB. `flags` The options to use when performing this operation. The following flags are supported: |Name |Description | |----------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| |``doc://com.apple.accelerate/documentation/Accelerate/kvImagePrintDiagnosticsToConsole``|Prints a debug message if the operation fails. | |``doc://com.apple.accelerate/documentation/Accelerate/kvImageHighQualityResampling`` |Instructs the converter to spend extra time to achieve better image quality in cases where chroma is upsampled or downsampled as part of the conversion. | |``doc://com.apple.accelerate/documentation/Accelerate/kvImageDoNotTile`` |Operates as if ``doc://com.apple.accelerate/documentation/Accelerate/kvImageDoNotTile`` was passed to ``doc://com.apple.accelerate/documentation/Accelerate/vImageConvert_AnyToAny(_:_:_:_:_:)``.| ## Return Value [`kvImageNoError`](/documentation/Accelerate/kvImageNoError); otherwise, one of the error codes that describes. ## Discussion This function creates a [`vImageConverter`](/documentation/Accelerate/vImageConverter) instance that’s used with [`vImageConvert_AnyToAny(_:_:_:_:_:)`](/documentation/Accelerate/vImageConvert_AnyToAny(_:_:_:_:_:)) to convert a Core Graphics formatted image, described by [`vImage_CGImageFormat`](/documentation/Accelerate/vImage_CGImageFormat), to Core Video image data, described by [`vImageCVImageFormat`](/documentation/Accelerate/vImageCVImageFormat). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)