# Core Video Functions ## Topics ### Converting between strings and integer code points [`func CVColorPrimariesGetIntegerCodePointForString(CFString?) -> Int32`](/documentation/CoreVideo/CVColorPrimariesGetIntegerCodePointForString(_:)) Returns the standard integer code point corresponding to the Core Video color primaries constant string that you specify. [`func CVColorPrimariesGetStringForIntegerCodePoint(Int32) -> Unmanaged?`](/documentation/CoreVideo/CVColorPrimariesGetStringForIntegerCodePoint(_:)) Returns the Core Video color primaries string corresponding to the standard integer code point that you specify. [`func CVTransferFunctionGetIntegerCodePointForString(CFString?) -> Int32`](/documentation/CoreVideo/CVTransferFunctionGetIntegerCodePointForString(_:)) Returns the standard integer code point corresponding to the Core Video transfer function string that you specify. [`func CVTransferFunctionGetStringForIntegerCodePoint(Int32) -> Unmanaged?`](/documentation/CoreVideo/CVTransferFunctionGetStringForIntegerCodePoint(_:)) Returns the Core Video transfer function string corresponding to the standard integer code point that you specify. [`func CVYCbCrMatrixGetIntegerCodePointForString(CFString?) -> Int32`](/documentation/CoreVideo/CVYCbCrMatrixGetIntegerCodePointForString(_:)) Returns the standard integer code point corresponding to the Core Video YCbCr matrix string that you specify. [`func CVYCbCrMatrixGetStringForIntegerCodePoint(Int32) -> Unmanaged?`](/documentation/CoreVideo/CVYCbCrMatrixGetStringForIntegerCodePoint(_:)) Returns the Core Video YCbCr matrix string corresponding to the standard integer code point that you specify. ### Functions [`func CVIsCompressedPixelFormatAvailable(OSType) -> Bool`](/documentation/CoreVideo/CVIsCompressedPixelFormatAvailable(_:)) [`func CVPixelBufferCopyCreationAttributes(CVPixelBuffer) -> CFDictionary`](/documentation/CoreVideo/CVPixelBufferCopyCreationAttributes(_:)) --- 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)