This seems to work on XCode 16

Really annoying to have to use a beta xcode for a released version of iOS

We managed to restart the phone with the force restart (volume up, volume down, hold power button)

iOS version : 16.0.2(20A380)

I managed to fix the compliance by using the Connect app on an iPhone, but it's less than ideal for doing things like setting the test details, as all the details are on my laptop

This test passes on iOS 15.1 so it seems it is fixed at that version The test still fails for iOS 15.0

Likely if the crash appears at random points in the code, you actually have a threading issue, and a background thread is crashing somewhere. I think a lot of AV Video code makes heavy use of multi threading.

I submitted feedback : FB9660480 This is quite a serious issue for us, other frameworks to update metadata do not provide the facilities we need, and if this doesn't work, we'll have to redo our whole metadata editing pipeline with an external library

I can point you in the right direction, i420 or YUV has 3 planes (or buffers), you're only decoding one, Not knowing how you obtained your initial buffer, I can't tell you how to get the rest. But once you have all three you have to combine them together, typically using a fragment shader

I can point you in the right direction, i420 or YUV has 3 planes (or buffers), you're only decoding one, Not knowing how you obtained your initial buffer, I can't tell you how to get the rest. But once you have all three you have to combine them together, typically using a fragment shader

That shouldn't have been an answer, missed the comment button. Anyway, I have replicated the issue in a single test. For me the issue manifests itself in iOS 15, if I run the test on a device running ios 14, the test passes. Here is the full code for a test, you'll need to supply your own image and change a tag that exists for you: func testCGImageDestinationCopyImageSource() throws {     guard let imageURL = Bundle(for: self.classForCoder).url(forResource: "Image_000001", withExtension: "jpg") else {       XCTFail()       return     }     // Work with the image data     let originalData = try Data(contentsOf: imageURL)     // Create source from data     guard let imageSource = CGImageSourceCreateWithData(originalData as CFData, nil) else {       XCTFail()       return     }     guard let UTI: CFString = CGImageSourceGetType(imageSource) else {       XCTFail()       return     }     // Setup a new destination to copy data too     let imageData: CFMutableData = CFDataCreateMutable(nil, 0)     guard let destination = CGImageDestinationCreateWithData(imageData as CFMutableData, UTI, 1, nil) else {       XCTFail()       return     }     // Get the metadata     var mutableMetadata: CGMutableImageMetadata     if let imageMetadata = CGImageSourceCopyMetadataAtIndex(imageSource, 0, nil) {       mutableMetadata = CGImageMetadataCreateMutableCopy(imageMetadata) ?? CGImageMetadataCreateMutable()     } else {       mutableMetadata = CGImageMetadataCreateMutable()     }     // Inspect and check the old value     guard let tag = CGImageMetadataCopyTagMatchingImageProperty(mutableMetadata,                                   kCGImagePropertyExifDictionary,                                   kCGImagePropertyExifLensModel) else {       XCTFail()       return     }     guard let originalValue = CGImageMetadataTagCopyValue(tag) as? String else {       XCTFail()       return     }     XCTAssertEqual(originalValue, "iOS.0")     // Set a new value in the metadata     CGImageMetadataSetValueMatchingImageProperty(mutableMetadata,                            kCGImagePropertyExifDictionary,                            kCGImagePropertyExifLensModel, "iOS" as CFString)     // Ensure new value is set in the metadata     guard let newTag = CGImageMetadataCopyTagMatchingImageProperty(mutableMetadata,                                   kCGImagePropertyExifDictionary,                                   kCGImagePropertyExifLensModel) else {       XCTFail()       return     }     guard let newValue = CGImageMetadataTagCopyValue(newTag) as? String else {       XCTFail()       return     }     XCTAssertEqual(newValue, "iOS")     // Combine the new metadata with the original image     let options = [       kCGImageDestinationMetadata as String : mutableMetadata,       kCGImageDestinationMergeMetadata as String : true       ] as [String : Any]     guard CGImageDestinationCopyImageSource(destination, imageSource, options as CFDictionary, nil) else {       XCTFail()       return     }     // Create a new source from the copied to data     guard let newSource = CGImageSourceCreateWithData(imageData as CFData, nil) else {       XCTFail()       return     } // Get the metadata from the copied to data     var mutableMetadata2: CGMutableImageMetadata     if let imageMetadata2 = CGImageSourceCopyMetadataAtIndex(newSource, 0, nil) {       mutableMetadata2 = CGImageMetadataCreateMutableCopy(imageMetadata2) ?? CGImageMetadataCreateMutable()     } else {       mutableMetadata2 = CGImageMetadataCreateMutable()     }     // Inspect and check the value in the copied to data     guard let updatedTag = CGImageMetadataCopyTagMatchingImageProperty(mutableMetadata2,                                   kCGImagePropertyExifDictionary,                                   kCGImagePropertyExifLensModel) else {       XCTFail()       return     }     guard let updatedValue = CGImageMetadataTagCopyValue(updatedTag) as? String else {       XCTFail()       return     }     XCTAssertEqual(updatedValue, "iOS")   }

I think I'm also running into this problem but on iOS 15. I use CGImageDestinationCopyImageSource to update some metadata. I ran an XCode test to make sure it was correctly set, but since I updated to XCode 13 and iOS 15, the test fails and the metadata is not updated in the file