CoreMedia iOS xcode27.3 b1

#CoreMedia.framework

diff -ruN /Applications/Xcode_27.2.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CMSampleBuffer.h /Applications/Xcode_27.3.0-beta1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CMSampleBuffer.h
--- /Applications/Xcode_27.2.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CMSampleBuffer.h	2026-10-20 07:17:56
+++ /Applications/Xcode_27.3.0-beta1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CoreMedia.framework/Headers/CMSampleBuffer.h	2026-11-04 09:32:25
@@ -1899,6 +1899,15 @@
 						API_AVAILABLE(macos(13.0), ios(16.0), tvos(16.0), watchos(9.0), visionos(1.0));
 
 /*!
+	@constant   kCMSampleAttachmentKey_SMPTE_ST_2094_50Data
+	@abstract   SMPTE ST 2094-50 per frame metadata
+	@discussion
+		The attachment is CFData containing SMPTE ST 2094-50 metadata (SMPTE ST 2094-50:2026-08 — Dynamic Metadata for Color Volume Transform — Application #5). This attachment will override any SMPTE ST 2094-50 metadata stored within the compressed data. The data shall start with the field smpte_st_2094_50_application_info. Annex C, Section C.2.1 Table C.1
+ */
+CM_EXPORT const CFStringRef kCMSampleAttachmentKey_SMPTE_ST_2094_50Data // CFData
+						API_AVAILABLE(macos(27.3), ios(27.3), tvos(27.3), watchos(27.3), visionos(27.3));
+
+/*!
 	@constant	kCMSampleAttachmentKey_PostDecodeProcessingMetadata
 	@abstract	Represents the sequence and frame level metadata for post decode processing.
 	@discussion This attachment is used to pass sequence and frame level metadata from a format reader to a decoder or RAW processor. It should be a CFDictionary that conforms to CFPropertyList.