# Error Code Constants Constants for Video Toolbox operation error codes. ## Topics ### Errors Codes [`kVTAllocationFailedErr`](/documentation/VideoToolbox/kVTAllocationFailedErr) [`kVTColorCorrectionImageRotationFailedErr`](/documentation/VideoToolbox/kVTColorCorrectionImageRotationFailedErr) [`kVTColorCorrectionPixelTransferFailedErr`](/documentation/VideoToolbox/kVTColorCorrectionPixelTransferFailedErr) [`kVTColorSyncTransformConvertFailedErr`](/documentation/VideoToolbox/kVTColorSyncTransformConvertFailedErr) [`kVTCouldNotCreateColorCorrectionDataErr`](/documentation/VideoToolbox/kVTCouldNotCreateColorCorrectionDataErr) [`kVTCouldNotCreateInstanceErr`](/documentation/VideoToolbox/kVTCouldNotCreateInstanceErr) [`kVTCouldNotFindExtensionErr`](/documentation/VideoToolbox/kVTCouldNotFindExtensionErr) [`kVTCouldNotFindTemporalFilterErr`](/documentation/VideoToolbox/kVTCouldNotFindTemporalFilterErr) [`kVTCouldNotFindVideoDecoderErr`](/documentation/VideoToolbox/kVTCouldNotFindVideoDecoderErr) [`kVTCouldNotFindVideoEncoderErr`](/documentation/VideoToolbox/kVTCouldNotFindVideoEncoderErr) [`kVTCouldNotOutputTaggedBufferGroupErr`](/documentation/VideoToolbox/kVTCouldNotOutputTaggedBufferGroupErr) [`kVTExtensionConflictErr`](/documentation/VideoToolbox/kVTExtensionConflictErr) [`kVTExtensionDisabledErr`](/documentation/VideoToolbox/kVTExtensionDisabledErr) [`kVTFormatDescriptionChangeNotSupportedErr`](/documentation/VideoToolbox/kVTFormatDescriptionChangeNotSupportedErr) [`kVTFrameSiloInvalidTimeRangeErr`](/documentation/VideoToolbox/kVTFrameSiloInvalidTimeRangeErr) [`kVTFrameSiloInvalidTimeStampErr`](/documentation/VideoToolbox/kVTFrameSiloInvalidTimeStampErr) [`kVTImageRotationNotSupportedErr`](/documentation/VideoToolbox/kVTImageRotationNotSupportedErr) [`kVTInsufficientSourceColorDataErr`](/documentation/VideoToolbox/kVTInsufficientSourceColorDataErr) [`kVTInvalidSessionErr`](/documentation/VideoToolbox/kVTInvalidSessionErr) [`kVTMultiPassStorageIdentifierMismatchErr`](/documentation/VideoToolbox/kVTMultiPassStorageIdentifierMismatchErr) [`kVTMultiPassStorageInvalidErr`](/documentation/VideoToolbox/kVTMultiPassStorageInvalidErr) [`kVTParameterErr`](/documentation/VideoToolbox/kVTParameterErr) [`kVTPixelRotationNotSupportedErr`](/documentation/VideoToolbox/kVTPixelRotationNotSupportedErr) [`kVTPixelTransferNotPermittedErr`](/documentation/VideoToolbox/kVTPixelTransferNotPermittedErr) [`kVTPixelTransferNotSupportedErr`](/documentation/VideoToolbox/kVTPixelTransferNotSupportedErr) [`kVTPropertyNotSupportedErr`](/documentation/VideoToolbox/kVTPropertyNotSupportedErr) [`kVTPropertyReadOnlyErr`](/documentation/VideoToolbox/kVTPropertyReadOnlyErr) [`kVTSessionMalfunctionErr`](/documentation/VideoToolbox/kVTSessionMalfunctionErr) [`kVTVideoDecoderAuthorizationErr`](/documentation/VideoToolbox/kVTVideoDecoderAuthorizationErr) [`kVTVideoDecoderBadDataErr`](/documentation/VideoToolbox/kVTVideoDecoderBadDataErr) [`kVTVideoDecoderCallbackMessagingErr`](/documentation/VideoToolbox/kVTVideoDecoderCallbackMessagingErr) [`kVTVideoDecoderMalfunctionErr`](/documentation/VideoToolbox/kVTVideoDecoderMalfunctionErr) [`kVTVideoDecoderNeedsRosettaErr`](/documentation/VideoToolbox/kVTVideoDecoderNeedsRosettaErr) [`kVTVideoDecoderNotAvailableNowErr`](/documentation/VideoToolbox/kVTVideoDecoderNotAvailableNowErr) [`kVTVideoDecoderReferenceMissingErr`](/documentation/VideoToolbox/kVTVideoDecoderReferenceMissingErr) [`kVTVideoDecoderRemovedErr`](/documentation/VideoToolbox/kVTVideoDecoderRemovedErr) [`kVTVideoDecoderUnknownErr`](/documentation/VideoToolbox/kVTVideoDecoderUnknownErr) [`kVTVideoDecoderUnsupportedDataFormatErr`](/documentation/VideoToolbox/kVTVideoDecoderUnsupportedDataFormatErr) [`kVTVideoEncoderAuthorizationErr`](/documentation/VideoToolbox/kVTVideoEncoderAuthorizationErr) [`kVTVideoEncoderAutoWhiteBalanceNotLockedErr`](/documentation/VideoToolbox/kVTVideoEncoderAutoWhiteBalanceNotLockedErr) [`kVTVideoEncoderMVHEVCVideoLayerIDsMismatchErr`](/documentation/VideoToolbox/kVTVideoEncoderMVHEVCVideoLayerIDsMismatchErr) [`kVTVideoEncoderMalfunctionErr`](/documentation/VideoToolbox/kVTVideoEncoderMalfunctionErr) [`kVTVideoEncoderNeedsRosettaErr`](/documentation/VideoToolbox/kVTVideoEncoderNeedsRosettaErr) [`kVTVideoEncoderNotAvailableNowErr`](/documentation/VideoToolbox/kVTVideoEncoderNotAvailableNowErr) --- 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)