Why do Apple’s builtin Photo app produce videos with better image stabilization than what I can get when I enable cinematicextended as preferred stabilization using the AVCapture API? Ref: https://developer.apple.com/documentation/avfoundation/avcapturevideostabilizationmode/cinematicextended I have based my work on https://developer.apple.com/documentation/avfoundation/capture_setup/avcam_building_a_camera_app Do the Apple Photo app use another API or some Apple properitary algoritms to achieve a better result than what’s available using the AvFoundation API? Best, Thomas Hagen

I have build a video recording app based on https://developer.apple.com/documentation/avfoundation/capture_setup/avcam_building_a_camera_app I have exteded the sample to use stabilization, but I am not near getting as good results as I get from using the Apple Photo App. The only thing I seem to be able to control from AVFoundation is https://developer.apple.com/documentation/avfoundation/avcaptureconnection/1620484-preferredvideostabilizationmode Do Apple use different APIs than what is available from AVFoundation? Best, Thomas Hagen

It is 2023 and Photos.app still provides no way to sort photos/movies by file size. I ended up writing some AppleScript that displays the file sizes of images/movies in a specific album. It is also simple to create a shell script to examine the photo library contents directly but mapping the UUID-based filenames back to the names used in Photos.app is not straightforward (to me at least). You can't even create a smart album based upon file size. Why is there no native support for this in Photos.app/PhotoKit? (And, yes, I have submitted many feature requests over the years)

I know that I can uniquely identify a PHAsset on a given device using localIdentifier but if that asset is synched (through iCloud, say) to another device, how to I uniquely identify that asset across multiple devices? My app allows users to store their images in the standard photo gallery, but I have no way of referring to them when they sync their app profile to another iOS device with my app installed.

"Hi developers, I am creating a camera app project. In this camera app, I need to implement floating buttons, for example, buttons for aspect ratio and timer settings."

I'm working with Apple's sample code for PhotoBrowse. In the main view controller's viewDidLoad() method we have this code: let allPhotosOptions = PHFetchOptions() allPhotosOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: true)] This code sorts the photos by "creationDate". How do I determine/find the other valid values for these sort descriptors? For example, what if I wanted to sort photos by their file size, last modified date, etc.? TIA!

We found there high possibility of CameraSessionWasInterrupted exception in iOS17 beta5 any body knows why?

I have a web instance that uses a camera to display AR content. After upgrading to IOS beta 17 (version 1, 2, 3) - The camera only shows black, even though all permissions seem accepted. Has the actual permission model changed for simple web camera access? If so, this will break a lot of web-enabled capabilities.

When I used BOOL compatible = UIVideoAtPathIsCompatibleWithSavedPhotosAlbum([pathUrl path]); if (compatible) { UISaveVideoAtPathToSavedPhotosAlbum([pathUrl path], self, @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil); } to save video,but here is some error. My phone has 33.72GB available and the video is only 4.2GB in size. What should i do？ ps: I try to use [PHPhotoLibrary sharedPhotoLibrary] performChanges to save, but i got the same error. error code -3305.

On some iOS 16 mobile phones, it was found that there was a crash when using photo book to read the album. When the crash occurred, the console did not print any information. Through the xcodef stack, the crash occurred in the corresponding interface inside photo book, in the order of [PLPrivacy logPhotosAccessWithSelfAuditToken]， -[PAAccessLogger log:]， _ pthread_ wqthread， _ dispatch _ workloop_ worker_ thread， _ dispatch_ lane_ invoke， _ dispatch_ lane_ serial _ drain， _ dispatch _ client_ callout， _ dispatch_ block_ async invoke2， -[PAAccessLogger log:]_ block _ invoke， -[PACoalescingIntervalTracker coalesce:]， _ dispatch_ source_ set_ runloop_ timer_ 4CF，

We observed that the PHPicker is unable to load RAW images captured on an iPhone in some scenarios. And it is also somehow related to iCloud. Here is the setup: The PHPickerViewController is configured with preferredAssetRepresentationMode = .current to avoid transcoding. The image is loaded from the item provider like this: if itemProvider.hasItemConformingToTypeIdentifier(kUTTypeImage) { itemProvider.loadFileRepresentation(forTypeIdentifier: kUTTypeImage) { url, error in // work } } This usually works, also for RAW images. However, when trying to load a RAW image that has just been captured with the iPhone, the loading fails with the following errors on the console: [claims] 43A5D3B2-84CD-488D-B9E4-19F9ED5F39EB grantAccessClaim reply is an error: Error Domain=NSCocoaErrorDomain Code=4097 "Couldn’t communicate with a helper application." UserInfo={NSUnderlyingError=0x2804a8e70 {Error Domain=NSCocoaErrorDomain Code=4097 "connection from pid 19420 on anonymousListener or serviceListener" UserInfo={NSDebugDescription=connection from pid 19420 on anonymousListener or serviceListener}}} Error copying file type public.image. Error: Error Domain=NSItemProviderErrorDomain Code=-1000 "Cannot load representation of type public.image" UserInfo={NSLocalizedDescription=Cannot load representation of type public.image, NSUnderlyingError=0x280480540 {Error Domain=NSCocoaErrorDomain Code=4097 "Couldn’t communicate with a helper application." UserInfo={NSUnderlyingError=0x2804a8e70 {Error Domain=NSCocoaErrorDomain Code=4097 "connection from pid 19420 on anonymousListener or serviceListener" UserInfo={NSDebugDescription=connection from pid 19420 on anonymousListener or serviceListener}}}}} We observed that on some devices, loading the image will actually work after a short time (~30 sec), but on others it will always fail. We think it is related to iCloud Photos: On the device that has iCloud Photos sync enabled, the picker is able to load the image right after it was synced to the cloud. On devices that don't sync the image, loading always fails. It seems that the sync process is doing some processing (?) of the image that will later enable the picker to load it successfully, but that's just guessing. Additional observations: This seems to only occur for images that were taken with the stock Camera app. When using Halide to capture RAW (either ProRAW or RAW), the Picker is able to load the image. When trying to load the image as kUTTypeRawImage instead of kUTTypeImage, it also fails. The picker also can't load RAW images that were AirDroped from another device, unless it synced to iCloud first. This is reproducable using the Selecting Photos and Videos in iOS sample code project. We observed this happening in other apps that use the PHPicker, not just ours. Is this a bug, or is there something that we are missing?

i have received a lot of crash log only in iOS16 the crash occured when i called : [[PHImageManager defaultManager] requestImageDataForAsset:asset options:options resultHandler:resultHandler] here is the crash log Exception Type: NSInternalInconsistencyException ExtraInfo: Code Type: arm64 OS Version: iPhone OS 16.0 (20A5328h) Hardware Model: iPhone14,3 Launch Time: 2022-07-30 18:43:25 Date/Time: 2022-07-30 18:49:17 *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason:Unhandled error (NSCocoaErrorDomain, 134093) occurred during faulting and was thrown: Error Domain=NSCocoaErrorDomain Code=134093 "(null)" Last Exception Backtrace: 0 CoreFoundation 0x00000001cf985dc4 0x1cf97c000 + 40388 1 libobjc.A.dylib 0x00000001c8ddfa68 0x1c8dc8000 + 96872 2 CoreData 0x00000001d56d2358 0x1d56cc000 + 25432 3 CoreData 0x00000001d56fa19c 0x1d56cc000 + 188828 4 CoreData 0x00000001d5755be4 0x1d56cc000 + 564196 5 CoreData 0x00000001d57b0508 0x1d56cc000 + 935176 6 PhotoLibraryServices 0x00000001df1783e0 0x1df0ed000 + 570336 7 Photos 0x00000001df8aa88c 0x1df85d000 + 317580 8 PhotoLibraryServices 0x00000001df291de0 0x1df0ed000 + 1723872 9 CoreData 0x00000001d574e518 0x1d56cc000 + 533784 10 libdispatch.dylib 0x00000001d51fc0fc 0x1d51f8000 + 16636 11 libdispatch.dylib 0x00000001d520b634 0x1d51f8000 + 79412 12 CoreData 0x00000001d574e0a0 0x1d56cc000 + 532640 13 PhotoLibraryServices 0x00000001df291d94 0x1df0ed000 + 1723796 14 PhotoLibraryServices 0x00000001df291434 0x1df0ed000 + 1721396 15 Photos 0x00000001df8a8380 0x1df85d000 + 308096 16 Photos 0x00000001df89d050 0x1df85d000 + 262224 17 Photos 0x00000001df87f62c 0x1df85d000 + 140844 18 Photos 0x00000001df87ee94 0x1df85d000 + 138900 19 Photos 0x00000001df87e594 0x1df85d000 + 136596 20 Photos 0x00000001df86b5c8 0x1df85d000 + 58824 21 Photos 0x00000001df86d938 0x1df85d000 + 67896 22 Photos 0x00000001dfa37a64 0x1df85d000 + 1944164 23 Photos 0x00000001dfa37d18 0x1df85d000 + 1944856 24 youavideo -[YouaImageManager requestImageDataForAsset:options:resultHandler:] (in youavideo) (YouaImageManager.m:0) 27 25 youavideo -[YouaAlbumTransDataController requstTransImageHandler:] (in youavideo) (YouaAlbumTransDataController.m:0) 27 26 youavideo -[YouaAlbumTransDataController requstTransWithHandler:] (in youavideo) (YouaAlbumTransDataController.m:77) 11 27 youavideo -[YouaUploadTransDataOperation startTrans] (in youavideo) (YouaUploadTransDataOperation.m:102) 19 28 Foundation 0x00000001c9e78038 0x1c9e3c000 + 245816 29 Foundation 0x00000001c9e7d704 0x1c9e3c000 + 268036 30 libdispatch.dylib 0x00000001d51fa5d4 0x1d51f8000 + 9684 31 libdispatch.dylib 0x00000001d51fc0fc 0x1d51f8000 + 16636 32 libdispatch.dylib 0x00000001d51ff58c 0x1d51f8000 + 30092 33 libdispatch.dylib 0x00000001d51febf4 0x1d51f8000 + 27636 34 libdispatch.dylib 0x00000001d520db2c 0x1d51f8000 + 88876 35 libdispatch.dylib 0x00000001d520e338 0x1d51f8000 + 90936 36 libsystem_pthread.dylib 0x00000002544b9dbc 0x2544b9000 + 3516 37 libsystem_pthread.dylib 0x00000002544b9b98 0x2544b9000 + 2968 i can't find the error code 134093 definition i don't know what's going wrong in iOS16 Would anyone have a hint of why this could happen and how to resolve it? thanks very much

Environment: iOS 16 beta 2, beta 3. iPhone 11 Pro, 12 mini Steps to reproduce: Subscribe to Photo Library changes via PHPhotoLibraryChangeObserver, put some logs to track inserted/deleted objects: func photoLibraryDidChange(_ changeInstance: PHChange) { if let changeDetails = changes.changeDetails(for: allPhotosFetchResult) { for insertion in changeDetails.insertedObjects { print("🥶 INSERTED: ", insertion.localIdentifier) } for deletion in changeDetails.removedObjects { print("🥶 DELETED: ", deletion.localIdentifier) } } } Save a photo to camera roll with PHAssetCreationRequest Go to the Photo Library, delete the newly saved photo Come back to the app and watch the logs: 🥶 INSERTED:  903933C3-7B83-4212-8DF1-37C2AD3A923D/L0/001 🥶 DELETED:  39F673E7-C5AC-422C-8BAA-1BF865120BBF/L0/001 Expected result: localIdentifier of the saved and deleted asset is the same string in both logs. In fact: It's different. So it appears that either the localIdentifier of an asset gets changed after successful saving, or it's a bug in the Photos framework in iOS 16. I've checked - in iOS 15 it works fine (IDs in logs match).

I ran into a strange problem. A camera app using AVFoundation, I use the following code; captureDevice = AVCaptureDevice.default(AVCaptureDevice.DeviceType.builtInUltraWideCamera, for: AVMediaType.video, position: .back) then, let isAutoFocusSupported = captureDevice.isFocusModeSupported(.autoFocus) "isAutoFocusSupported" should be "true". For iPhone 13 pro, it is "true". But for 13 / 13 mini, it is "false". Why?

For PHPickerViewController, we know we can perform simple filtering by var config = PHPickerConfiguration() config.filter = PHPickerFilter.images But, how about we only want to show images with format JPG & PNG, but excluding GIF? This is because our app doesn't support GIF. Is it possible to do so?

Hi, the video was great and on point, but it only featured UIKit apis. 3 years into the SwiftUI transition, I wonder if this is a UIKit only feature or can we also use it if we chose SwiftUI to build our apps ? Thanks

I use the following code to parse Photo metadata and this works well. However, I am unable to pull the new iOS 14 "caption" from this metadata (it worked in early iOS 14 betas, but has since stopped working in the GM.) Does anyone know how I can get the caption data from a PHAsset? Thanks! Stephen         let options = PHContentEditingInputRequestOptions()         options.isNetworkAccessAllowed = true         asset.requestContentEditingInput(with: options, completionHandler: {(contentEditingInput, _) -> Void in             if let url = contentEditingInput?.fullSizeImageURL {                 let fullImage = CIImage(contentsOf: url)                                  // get all the metadata                 self.allPhotoMetadata = fullImage?.properties ?? [:]                                  // {TIFF}                 if let tiffDict = self.allPhotoMetadata["{TIFF}"] as? [String:Any] {                     if tiffDict["Make"] != nil {                         self.cameraData[cameraKeys.make] = tiffDict["Make"]                     }                     if tiffDict["Model"] != nil {                         self.cameraData[cameraKeys.model] = tiffDict["Model"]                     }                     if tiffDict["ImageDescription"] != nil {                         self.imageData[imageKeys.caption] = tiffDict["ImageDescription"]                     }                 }                                  // {IPTC}                 if let iptcDict = self.allPhotoMetadata["{IPTC}"] as? [String:Any] {                     // if we didn't find a caption in the TIFF dict, try to get it from IPTC data                     // first try, Caption/Abtract, then ArtworkContentDescription                     if self.imageData[imageKeys.caption] == nil {                         if iptcDict["Caption/Abstract"] != nil {                             self.imageData[imageKeys.caption] = iptcDict["ArtworkContentDescription"]                         } else if iptcDict["ArtworkContentDescription"] != nil {                             self.imageData[imageKeys.caption] = iptcDict["ArtworkContentDescription"]                         }                     }                 }             }         })     }

I want to get only 'food' image from user's album. Can I fix or set placeholder to search 'food' automatically in PHPicker ? I just need the way that user don't need to manually enter the 'food' and search the image.

We are making application of ios. The application is for Disaster prevention in Japan. Because, Recentry in Japan has many Disaster in all season. We spplied to Local government in Japan and using general public and they are using well. One of the local government request to us, they want also supply to deaf person and help whe disaster occur. Local government already has disaster prevention broadcast but it is using loudspeaker. Then, when rains heavily, it can not hear to general public. And our application is from disaster prevention broadcast and forwarding to ios smartphone. It is helpfull to general public well. We are making new application it is not only prevention broadcast text but flashlight with iphone. But after making application, the flashlight is lighting only open our application. like beloe link. But, if Deaf person using it maybe he is not notice well. Our application is already has viblation function but Deaf person put his smartphone in his bag maybe I think he never noticed that Heavy rain and tsunami. Here is our application https://apps.apple.com/jp/app/cosmocast/id1247774270?mt=8 Here is application rule for flashlight. https://stackoverflow.com/questions/32136442/iphone-flashlight-not-working-while-app-is-in-background/32137434 I want help Deaf person and also senior citizens for Heavy rain and tsunami by our application. We'd like to make a flash light at the same time as the push notification arrived. Does anyone know a good way? Thank you and Best regards. Tomita.

Hello there! I am trying to use PHPickerViewController to load videos, but I got a problem: I could load some videos only not all. I refer to the existing thread - https://developer.apple.com/forums/thread/652695, but dosen't work. This is the code I persent PHPickerViewController var config = PHPickerConfiguration() config.selectionLimit = 1 config.filter = .videos config.preferredAssetRepresentationMode = .current let picker = PHPickerViewController(configuration: config) picker.delegate = self present(picker, animated: true, completion: nil) Below is the relevant implementation of the method: func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]): picker.dismiss(animated: true, completion: nil) for result in results {   result.itemProvider.loadFileRepresentation(forTypeIdentifier: UTType.movie.identifier) { (url, error) in     if let error = error {       print(error)       return     }     guard let url = url else { return }     let fileName = "\(Date().timeIntervalSince1970).\(url.pathExtension)"     let newUrl = URL(fileURLWithPath: NSTemporaryDirectory() + fileName)     try? FileManager.default.copyItem(at: url, to: newUrl)     DispatchQueue.main.async {       self.playVideo(newUrl)     }   } } Before I print error in line 5, Xcode printed 3 lines of error: [AXRuntimeCommon] Unknown client: TestPHPicker [default] [ERROR] Could not create a bookmark: NSError: Cocoa 257 "The file couldn’t be opened because you don’t have permission to view it." } Error copying file type public.movie. Error: Error Domain=NSItemProviderErrorDomain Code=-1000 "Cannot load representation of type public.movie" UserInfo={NSLocalizedDescription=Cannot load representation of type public.movie, NSUnderlyingError=0x283a4a610 {Error Domain=NSCocoaErrorDomain Code=4101 "Couldn’t communicate with a helper application." UserInfo={NSUnderlyingError=0x283a48b10 {Error Domain=PHAssetExportRequestErrorDomain Code=2 "(null)" UserInfo={NSUnderlyingError=0x283a4a550 {Error Domain=CloudPhotoLibraryErrorDomain Code=82 "Failed to download CPLResourceTypeOriginal" UserInfo=0x28219b300 (not displayed)}}}}}} And I print error in line 5: Error Domain=NSItemProviderErrorDomain Code=-1000 "Cannot load representation of type public.movie" UserInfo={NSLocalizedDescription=Cannot load representation of type public.movie, NSUnderlyingError=0x283a4a610 {Error Domain=NSCocoaErrorDomain Code=4101 "Couldn’t communicate with a helper application." UserInfo={NSUnderlyingError=0x283a48b10 {Error Domain=PHAssetExportRequestErrorDomain Code=2 "(null)" UserInfo={NSUnderlyingError=0x283a4a550 {Error Domain=CloudPhotoLibraryErrorDomain Code=82 "Failed to download CPLResourceTypeOriginal" UserInfo=0x28219b300 (not displayed)}}}}}} For some videos I can load successfully, and some videos I got error. I don't know why this happened. I am testing this on an iPhone X iOS 14.0(18A373). Xcode 12.0 (12A7209). Thanks for help!