Post not yet marked as solved
I'm using core data in app, widget extension and intent, but I found the data is not updated between targets.
such as
I added a new record in app, the widget is not updated unless remove the widget and re-add it.
I added a new record in intent, the data in app is not updated unless I run the app again.
I have set container.viewContext.automaticallyMergesChangesFromParent = true but it doesn't work.
So how can I make the data is updated no matter it is modified any targets.
Post not yet marked as solved
After upgrading to iOS 17, Thread Performance Checker is complaining of priority inversion when converting a CVPixelBuffer to UIImage through a CIImage instance. It might be a false-positive or an issue?
- (UIImage *)imageForSampleBuffer:(CMSampleBufferRef)sampleBuffer andOrientation:(UIImageOrientation)orientation {
CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
CIImage *ciImage = [CIImage imageWithCVPixelBuffer:pixelBuffer];
UIImage *uiImage = [UIImage imageWithCIImage:ciImage];
NSData *data = UIImageJPEGRepresentation(uiImage, 90);
}
The code snippet above, when running in a thread set to the default priority results in the message below:
Thread Performance Checker: Thread running at User-interactive quality-of-service class waiting on a lower QoS thread running at Default quality-of-service class. Investigate ways to avoid priority inversions
PID: 1188, TID: 723209
Backtrace
=================================================================
3 AGXMetalG14 0x0000000235c77cc8 1FEF1F89-B467-37B0-86F8-E05BC8A2A629 + 2927816
4 AGXMetalG14 0x0000000235ccd784 1FEF1F89-B467-37B0-86F8-E05BC8A2A629 + 3278724
5 AGXMetalG14 0x0000000235ccf6a4 1FEF1F89-B467-37B0-86F8-E05BC8A2A629 + 3286692
6 MetalTools 0x000000022f758b68 E712D983-01AD-3FE5-AB66-E00ABF76CD7F + 568168
7 CoreImage 0x00000001a7c0e580 3D2AC243-0880-3BA9-BBF3-A214454875E0 + 267648
8 CoreImage 0x00000001a7d0cc08 3D2AC243-0880-3BA9-BBF3-A214454875E0 + 1309704
9 CoreImage 0x00000001a7c0e2e0 3D2AC243-0880-3BA9-BBF3-A214454875E0 + 266976
10 CoreImage 0x00000001a7c0e1d0 3D2AC243-0880-3BA9-BBF3-A214454875E0 + 266704
11 libdispatch.dylib 0x0000000105e4a7bc _dispatch_client_callout + 20
12 libdispatch.dylib 0x0000000105e5be24 _dispatch_lane_barrier_sync_invoke_and_complete + 176
13 CoreImage 0x00000001a7c0a784 3D2AC243-0880-3BA9-BBF3-A214454875E0 + 251780
14 CoreImage 0x00000001a7c0a46c 3D2AC243-0880-3BA9-BBF3-A214454875E0 + 250988
15 libdispatch.dylib 0x0000000105e5b764 _dispatch_block_async_invoke2 + 148
16 libdispatch.dylib 0x0000000105e4a7bc _dispatch_client_callout + 20
17 libdispatch.dylib 0x0000000105e5266c _dispatch_lane_serial_drain + 832
18 libdispatch.dylib 0x0000000105e5343c _dispatch_lane_invoke + 460
19 libdispatch.dylib 0x0000000105e524a4 _dispatch_lane_serial_drain + 376
20 libdispatch.dylib 0x0000000105e5343c _dispatch_lane_invoke + 460
21 libdispatch.dylib 0x0000000105e60404 _dispatch_root_queue_drain_deferred_wlh + 328
22 libdispatch.dylib 0x0000000105e5fa38 _dispatch_workloop_worker_thread + 444
23 libsystem_pthread.dylib 0x00000001f35a4f20 _pthread_wqthread + 288
24 libsystem_pthread.dylib 0x00000001f35a4fc0 start_wqthread + 8
Post not yet marked as solved
I am using below commad line to generate AES-128 HLS,
mediafilesegmenter -iso-fragmented --encrypt-key-file=my.key -S -f /Volumes/Samsung/pattern/vision_pro/hls/*** /Volumes/Samsung/pattern/vision_pro/***.mov
but it always generates SAMPLE-AES, even I removed -S
#EXT-X-KEY:METHOD=SAMPLE-AES,URI="enc.key",IV=0x7316166d6a85f56f3d4606eaebc3aa44
How I can generate AES-128 HLS? Thanks.
Post not yet marked as solved
I have an image viewing app with support for avif (and avis) images. I'm trying to figure out if the recent bug in CoreMedia (dav1d) affects my app. The apple security update: https://support.apple.com/en-gb/HT214097
The vulnerable code path in dav1d is only reached when c->n_fc > 1 (https://code.videolan.org/videolan/dav1d/-/blob/2b475307dc11be9a1c3cc4358102c76a7f386a51/src/decode.c#L2845), where c is the dav1d context.
With some reverse engineering, the way I see CMPhoto calling into VideoToolBox (which internally calls into AV1SW.videodecoder, which is a wrapper around dav1d), the max frame delay is hardcoded to 1 in the dav1d settings which intern means that c->n_fc in dav1d is always 1. The vulnerable code path in dav1d is only reached when c->n_fc > 1 (https://code.videolan.org/videolan/dav1d/-/blob/2b475307dc11be9a1c3cc4358102c76a7f386a51/src/decode.c#L2845).
From my understand, this should mean that my app isn't affected. The apple security update however clearly mentions that "Processing an image may lead to arbitrary code execution". Surely I'm missing something?
Post not yet marked as solved
Recently I've been trying to play some AV1-encoded streams on my iPhone 15 Pro Max. First, I check for hardware support:
VTIsHardwareDecodeSupported(kCMVideoCodecType_AV1); // YES
Then I need to create a CMFormatDescription in order to pass it into a VTDecompressionSession. I've tried the following:
{
mediaType:'vide'
mediaSubType:'av01'
mediaSpecific: {
codecType: 'av01' dimensions: 394 x 852
}
extensions: {{
CVFieldCount = 1;
CVImageBufferChromaLocationBottomField = Left;
CVImageBufferChromaLocationTopField = Left;
CVPixelAspectRatio = {
HorizontalSpacing = 1;
VerticalSpacing = 1;
};
FullRangeVideo = 0;
}}
}
but VTDecompressionSessionCreate gives me error -8971 (codecExtensionNotFoundErr, I assume).
So it has something to do with the extensions dictionary? I can't find anywhere which set of extensions is necessary for it to work 😿.
VideoToolbox has convenient functions for creating descriptions of AVC and HEVC streams (CMVideoFormatDescriptionCreateFromH264ParameterSets and CMVideoFormatDescriptionCreateFromHEVCParameterSets), but not for AV1.
As of today I am using XCode 15.0 with iOS 17.0.0 SDK.
Post not yet marked as solved
Is AVQT capable of being used to measure encoding quality of PQ or HLG based content beyond SDR? If so, how am I able to leverage it. If not, is there a roadmap for timing to enable this type of tool?
Post not yet marked as solved
Hello,
I keep getting this kind of errors (specifically 16247) when trying to download DRM-protected HLS content, would anyone have a clue about the reason why ?
Error Domain=CoreMediaErrorDomain Code=-16247 "(null)" UserInfo={_NSURLErrorRelatedURLSessionTaskErrorKey=("BackgroundAVAssetDownloadTask
Thanks
Sylvain
Post not yet marked as solved
Hello, can anybody help me with this ? I am downloading video in FS, and when I give that url to player it gives me this error. but this comes up only in case of m3u8. other format like mp4 are working fine locally. please help !
{"error": {"code": -12865, "domain": "CoreMediaErrorDomain", "localizedDescription": "The operation couldn’t be completed. (CoreMediaErrorDomain error -12865.)", "localizedFailureReason": "", "localizedRecoverySuggestion": ""}, "target": 13367}
Post not yet marked as solved
I got code of CMIO CameraExtension by Xcode target and it is running with FaceTime. I guess this kind of Extension has lots of security limitation.
I like to run command like "netstat" in Extension. Is that possible to call Process.run()? I got keep getting error like "The file zsh doesn’t exist". Same code with Process.run() worked in macOS app.
I like to run DistributedNotificationCenter and send text from App to CameraExtension. Is that possible? I do not receive any message on CameraExtension.
If there is any other IPC method between macOS app and CameraExtension, please let me know.
Post marked as Apple Recommended
I built an app which hosts a CMIOExtension. The app works, and it can activate the extension. The extension loads in e.g. Photo Booth and shows the expected video (a white horizontal line which moves down the picture).
I have a couple of questions about this though.
The sample Camera Extension is built with a CMIOExtension dictionary with just one entry, CMIOExtensionMachServiceName which is $(TeamIdentifierPrefix)$(PRODUCT_BUNDLE_IDENTIFIER)
This Mach service name won't work though. When attempting to activate the extension, sysextd says that the extensions has an invalid mach service name or is not signed, the value must be prefixed with one of the App Groups in the entitlement.
So in order to get the sample extension to activate from my app, I have to change its CMIOExtensionMachServiceName to
<my team ID>.com.mycompany.my-app-group.<myextensionname>
Is this to be expected?
The template CMIOExtension generates its own video using a timer. My app is intended to capture video from a source, filter that video, then feed it to the CMIOExtension, somehow. The template creates an app group called "$(TeamIdentifierPrefix)com.example.app-group", which suggests that it might be possible to use XPC to send frames from the app to the extension.
However, I've been unable to do so. I've used
NSXPCConnection * connection = [[NSXPCConnection alloc] initWithMachServiceName:, using the CMIOExtensionMachServiceName with no options and with the NSXPCConnectionPrivileged option. I've tried NSXPCConnection * connection = [[NSXPCConnection alloc] initWithServiceName: using the extension's bundle identifier. In all cases when I send the first message I get an error in the remote object proxy's handler:
Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named <whatever name I try> was invalidated: failed at lookup with error 3 - No such process."
According to the "Daemons and Services Programming Guide" an XPC service should have a CFBundlePackageType of XPC!, but a CMIOExtension is of type SYSX. It can't be both.
Does the CMIOExtension loading apparatus cook up a synthetic name for the XPC service, and if so, what is it? If none, how is one expected to get pixel buffers into the camera extension?
Post not yet marked as solved
I made s target of "Camera Extension" on Xcode macOS Swift app.
I got Swift code with CMIOExtensionDeviceSource.
I add NSLog() and String.write() to file under FileManager.default.temporaryDirectory.
My camera extension installaion was success and running with FaceTime.
But I cannot see NSLog output or debug output temp file on Xcode or Console.
How can I see debug output from my Camera Extension?
Hey folks,
I have an application that ships a CoreMedia I/O system extension to create a virtual camera.
We separately ship an "uninstaller" app, which is a notarised AppKit app. This uninstaller removes the app, containers, and the system extension via the following API:
let request = OSSystemExtensionRequest.deactivationRequest(forExtensionWithIdentifier: pluginIdentifier, queue: .main)
request.delegate = self
OSSystemExtensionManager.shared.submitRequest(request)
The OSSystemExtensionRequest API does correctly deliver metadata via propertiesRequest(forExtensionWithIdentifier: …), but when we attempt to remove the extension using the above snippet, we get a failure OSSystemExtensionError.extensionNotFound.
The uninstaller app is signed with the same entitlements and certificate as the host app. It also embeds a copy of the system extension as required by the API.
I think the crux of the issue is: Should this be expected to work? We're all code-signed correctly etc, and the only difference is that the removal request is coming from an app with a different bundle identifier to the one that installed it start with.
Thanks!
Post not yet marked as solved
I have a use case to rotate a CMSampleBuffer from landscape to portrait. I have written a rough code for it. But still am facing many issues with appending of the sampleBuffer to input frame.
Here's the code:
`guard let imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else {
return nil
}
// Get the dimensions of the image buffer
let width = CVPixelBufferGetWidth(imageBuffer)
let height = CVPixelBufferGetHeight(imageBuffer)
// Determine if the image needs to be rotated
let shouldRotate = width > height
// Create a CIImage from the buffer
var image = CIImage(cvImageBuffer: imageBuffer)
// Rotate the CIImage if necessary
if shouldRotate {
image = image.oriented(forExifOrientation: 6) // Rotate 90 degrees clockwise
}
let originalPixelFormatType = CVPixelBufferGetPixelFormatType(imageBuffer)
// Create a new pixel buffer
var newPixelBuffer: CVPixelBuffer?
let status = CVPixelBufferCreate(kCFAllocatorDefault, height, width,
originalPixelFormatType, nil, &newPixelBuffer)
guard status == kCVReturnSuccess, let pixelBuffer = newPixelBuffer else {
return nil
}
CVBufferPropagateAttachments(imageBuffer, newPixelBuffer!)
// Render the rotated image onto the new pixel buffer
let context = CIContext()
context.render(image, to: pixelBuffer)
CVPixelBufferUnlockBaseAddress(pixelBuffer,CVPixelBufferLockFlags(rawValue: 0))
var videoInfo: CMVideoFormatDescription?
CMVideoFormatDescriptionCreateForImageBuffer(allocator: kCFAllocatorDefault, imageBuffer: newPixelBuffer!, formatDescriptionOut: &videoInfo)
var sampleTimingInfo = CMSampleTimingInfo(duration: CMSampleBufferGetDuration(sampleBuffer), presentationTimeStamp: CMSampleBufferGetPresentationTimeStamp(sampleBuffer), decodeTimeStamp: CMSampleBufferGetDecodeTimeStamp(sampleBuffer))
var newSampleBuffer: CMSampleBuffer?
CMSampleBufferCreateForImageBuffer(allocator: kCFAllocatorDefault, imageBuffer: newPixelBuffer!, dataReady: true, makeDataReadyCallback: nil, refcon: nil, formatDescription: videoInfo!, sampleTiming: &sampleTimingInfo, sampleBufferOut: &newSampleBuffer)
let attachments: CFArray! = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, createIfNecessary: true)
let dictionary = unsafeBitCast(CFArrayGetValueAtIndex(attachments, 0),
to: CFMutableDictionary.self)
if let attachmentsArray = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, createIfNecessary: true) as? [CFDictionary] {
for attachment in attachmentsArray {
for (key, value) in attachment as! Dictionary<CFString, Any> {
if let value = value as? CFTypeRef {
CMSetAttachment(newSampleBuffer!, key: key, value: value, attachmentMode: kCMAttachmentMode_ShouldPropagate)
}
}
}
}
return newSampleBuffer!
The error that I am getting while appending the frame is:
Error occured, isVideo = false, status = 3, Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-12780), NSLocalizedDescription=The operation could not be completed, NSUnderlyingError=0x282b87390 {Error Domain=NSOSStatusErrorDomain Code=-12780 "(null)"}}
I read online that this error might be due to different PixelFormatType. But how can that be because I am obtaining the PixelFormatType from the buffer itself.
If you want to see the difference between original and rotated sample buffer. https://www.diffchecker.com/V0a55kCB/
Thanks in advance!
Post not yet marked as solved
I'm trying to show likeCommand and dislikeCommand on the Lock Screen of a music player without success.
Are they still supported ? Is there any special configuration on the player or the track for them to show?
My current code which works for playCommand looks like this
MPRemoteCommandCenter.shared().likeCommand.addTarget { [unowned self] _ in
if isPlaying {
return .success
}
return .commandFailed
}
Post not yet marked as solved
Hi ,
We are getting big spikes of errors on very few programs in some live channels.
[-16012:CoreMediaErrorDomain] [Error Domain=CoreMediaErrorDomain Code=-16012 "(null)"]
When this error occurred , AVPlayer stops & users has to restart the playback.
This is the error we are getting & this happens in some live programs. We have the same set up & uses same transcoders etc in all programs. Mostly we have very low error rate in player with live programs , but with this error , error rate can increase up to 80% of the users effecting pretty much all the users on apple devices.
Does anyone know what this error actually means ? What is the context & what is the reason behind that ?
It seems like this may be related subtitles & this occurs only when the subtitles are enabled. ( The subtitles are not embedded in the stream it is teletext )
Try to find in apple documents & online & nothing could be find unfortunately.
Post not yet marked as solved
It seems AVAssetWriter is rejecting CVPixelBuffers with error -12743 when appending NSData for kCVImageBufferAmbientViewingEnvironmentKey for HDR videos.
Here is my code:
var ambientViewingEnvironment:CMFormatDescription.Extensions.Value?
var ambientViewingEnvironmentData:NSData?
ambientViewingEnvironment = sampleBuffer.formatDescription?.extensions[.ambientViewingEnvironment]
let plist = ambientViewingEnvironment?.propertyListRepresentation
ambientViewingEnvironmentData = plist as? NSData
And then attaching this data,
CVBufferSetAttachment(dstPixelBuffer, kCVImageBufferAmbientViewingEnvironmentKey, ambientViewingEnvironmentData! as CFData, .shouldPropagate)
No matter what I do, including copying the attachment from sourcePixelBuffer to destinationPixelBuffer as it is, the error remains!
var attachmentMode:CVAttachmentMode = .shouldPropagate
let attachment = CVBufferCopyAttachment(sourcePixelBuffer!, kCVImageBufferAmbientViewingEnvironmentKey, &attachmentMode)
NSLog("Attachment \(attachment!), mode \(attachmentMode)")
CVBufferSetAttachment(dstPixelBuffer, kCVImageBufferAmbientViewingEnvironmentKey, attachment!, attachmentMode)
I need to know if there is anything wrong in the way metadata is copied.
Post not yet marked as solved
Hi!
I'm trying to move from CoreMedio I/O DAL Plug-In to CoreMedia I/O camera extensions, announced in macOS 12.3. I created a test extension, placed it inside my app bundle into Contents/Library/SystemExtensions and signed with codesigning certificate. But when I try to install my extension from inside my app, using this code (Swift):
func installDriver()
{
guard let extensionIdentifer = DriverInstaller.extensionBundle().bundleIdentifier else {
return
}
let activationReq = OSSystemExtensionRequest.activationRequest(forExtensionWithIdentifier: extensionIdentifer, queue: .main)
activationReq.delegate = self
OSSystemExtensionManager.shared.submitRequest(activationReq)
}
I'm getting an error:
OSSystemExtensionErrorDomain error 8: Code Signature Invalid
which is rather generic. Can anybody tell me what I am doing wrong? Or at least propose some steps to find it out?
I'm posting here entitlements and codesign output for my extension and containing application for further information.
Executable=../Contents/Library/SystemExtensions/com..RoomDevice.Extension.systemextension/Contents/MacOS/com..RoomDevice.Extension
[Dict]
[Key] com.apple.security.app-sandbox
[Value]
[Bool] true
[Key] com.apple.security.application-groups
[Value]
[Array]
[String] 893K7MTL2H. com..
[Key] com.apple.security.device.camera
[Value]
[Bool] true
Executable=**********/Contents/MacOS/*****
[Dict]
[Key] com.apple.application-identifier
[Value]
[String] 893K7MTL2H.com..RoomDevice
[Key] com.apple.developer.system-extension.install
[Value]
[Bool] true
[Key] com.apple.developer.team-identifier
[Value]
[String] 893K7MTL2H
[Key] com.apple.security.application-groups
[Value]
[Array]
[String] 893K7MTL2H. com..********
Executable=***/Contents/MacOS/****
Identifier=com..RoomDevice
Format=app bundle with Mach-O universal (x86_64 arm64)
CodeDirectory v=20500 size=1345 flags=0x10000(runtime) hashes=31+7 location=embedded
Hash type=sha256 size=32
CandidateCDHash sha256=3584714367d59119b462d0f830247d27ff1fbace
CandidateCDHashFull sha256=3584714367d59119b462d0f830247d27ff1fbace53419d69abaa658fbb7a4f12
Hash choices=sha256
CMSDigest=3584714367d59119b462d0f830247d27ff1fbace53419d69abaa658fbb7a4f12
CMSDigestType=2
Launch Constraints:
None
CDHash=3584714367d59119b462d0f830247d27ff1fbace
Signature size=4688
Authority=Developer ID Application: ****************(893K7MTL2H)
Authority=Developer ID Certification Authority
Authority=Apple Root CA
Signed Time=01-Sep-2023 at 12:00:09 PM
Info.plist entries=22
TeamIdentifier=893K7MTL2H
Runtime Version=13.3.0
Sealed Resources version=2 rules=13 files=6
Internal requirements count=1 size=216
Executable=/Contents/Library/SystemExtensions/com.*****.RoomDevice.Extension.systemextension/Contents/MacOS/com..RoomDevice.Extension
Identifier=com.******.RoomDevice.Extension
Format=bundle with Mach-O universal (x86_64 arm64)
CodeDirectory v=20500 size=3627 flags=0x10000(runtime) hashes=102+7 location=embedded
Hash type=sha256 size=32
CandidateCDHash sha256=70580825016b7e262fb15c280ba380ad4e871bc1
CandidateCDHashFull sha256=70580825016b7e262fb15c280ba380ad4e871bc108951adb8cd474d652567f4f
Hash choices=sha256
CMSDigest=70580825016b7e262fb15c280ba380ad4e871bc108951adb8cd474d652567f4f
CMSDigestType=2
Launch Constraints:
None
CDHash=70580825016b7e262fb15c280ba380ad4e871bc1
Signature size=4688
Authority=Developer ID Application: ************ Ltd. (893K7MTL2H)
Authority=Developer ID Certification Authority
Authority=Apple Root CA
Signed Time=01-Sep-2023 at 12:00:05 PM
Info.plist entries=22
TeamIdentifier=893K7MTL2H
Runtime Version=13.3.0
Sealed Resources version=2 rules=13 files=0
Internal requirements count=1 size=224
Please anyone help. Thanks in advance!
Post not yet marked as solved
Hi!
I'm trying to move from CoreMedio I/O DAL Plug-In to CoreMedia I/O camera extensions, announced in macOS 12.3.
I created a test extension, placed it inside my app bundle into Contents/Library/SystemExtensions and signed with codesigning certificate. But when I try to install my extension from inside my app, using this code (Swift):
func requestActivation() {
guard case .idle = status
else { fatalError("Invalid state") }
print("Requesting activation of extension \"\(extensionIdentifier)\"")
let req = OSSystemExtensionRequest.activationRequest(forExtensionWithIdentifier: extensionIdentifier, queue: DispatchQueue.main)
req.delegate = self
OSSystemExtensionManager.shared.submitRequest(req)
status = .requested
}
I'm getting an error:
OSSystemExtensionErrorDomain error 8: Code Signature Invalid
which is rather generic. Can anybody tell me what I am doing wrong? Or at least propose some steps to find it out?
I'm posting here entitlements and codesign output for my extension and containing application for further information.
kdg@admins-Mac-mini SystemExtensions % codesign -d --entitlements - ./com.visicom.VirtualCamera.avextension.systemextension
Executable=/Applications/VirtualCamera.app/Contents/Library/SystemExtensions/com.visicom.VirtualCamera.avextension.systemextension/Contents/MacOS/com.visicom.VirtualCamera.avextension
[Dict]
[Key] com.apple.security.app-sandbox
[Value]
[Bool] true
[Key] com.apple.security.application-groups
[Value]
[Array]
[String] 6SUWV7QQBJ.com.visicom.VirtualCamera
kdg@admins-Mac-mini /Applications % codesign -d --entitlements - ./VirtualCamera.app
Executable=/Applications/VirtualCamera.app/Contents/MacOS/VirtualCamera
[Dict]
[Key] com.apple.developer.system-extension.install
[Value]
[Bool] true
[Key] com.apple.security.app-sandbox
[Value]
[Bool] true
[Key] com.apple.security.application-groups
[Value]
[Array]
[String] 6SUWV7QQBJ.com.visicom.VirtualCamera
[Key] com.apple.security.files.user-selected.read-only
[Value]
[Bool] true
kdg@admins-Mac-mini SystemExtensions % codesign -dvvv ./com.visicom.VirtualCamera.avextension.systemextension
Executable=/Applications/VirtualCamera.app/Contents/Library/SystemExtensions/com.visicom.VirtualCamera.avextension.systemextension/Contents/MacOS/com.visicom.VirtualCamera.avextension
Identifier=com.visicom.VirtualCamera.avextension
Format=bundle with Mach-O universal (x86_64 arm64)
CodeDirectory v=20500 size=1553 flags=0x10700(hard,kill,expires,runtime) hashes=37+7 location=embedded
Hash type=sha256 size=32
CandidateCDHash sha256=25bd80657bfd6e0ab95467146c7b532817e9e520
CandidateCDHashFull sha256=25bd80657bfd6e0ab95467146c7b532817e9e5209fd50b0cb7ceef40dcfb40e8
Hash choices=sha256
CMSDigest=25bd80657bfd6e0ab95467146c7b532817e9e5209fd50b0cb7ceef40dcfb40e8
CMSDigestType=2
CDHash=25bd80657bfd6e0ab95467146c7b532817e9e520
Signature size=9006
Authority=Developer ID Application: Visicom Media Inc. (6SUWV7QQBJ)
Authority=Developer ID Certification Authority
Authority=Apple Root CA
Timestamp=7 Jul 2022, 21:49:32
Info.plist entries=23
TeamIdentifier=6SUWV7QQBJ
Runtime Version=12.3.0
Sealed Resources version=2 rules=13 files=0
Internal requirements count=1 size=200
kdg@admins-Mac-mini /Applications % codesign -dvvv ./VirtualCamera.app
Executable=/Applications/VirtualCamera.app/Contents/MacOS/VirtualCamera
Identifier=com.visicom.VirtualCamera
Format=app bundle with Mach-O universal (x86_64 arm64)
CodeDirectory v=20500 size=1989 flags=0x10700(hard,kill,expires,runtime) hashes=51+7 location=embedded
Hash type=sha256 size=32
CandidateCDHash sha256=31e15fbbd436a67a20c5b58c597d8a4796a67720
CandidateCDHashFull sha256=31e15fbbd436a67a20c5b58c597d8a4796a6772020308fb69f4ee80b4e32788b
Hash choices=sha256
CMSDigest=31e15fbbd436a67a20c5b58c597d8a4796a6772020308fb69f4ee80b4e32788b
CMSDigestType=2
CDHash=31e15fbbd436a67a20c5b58c597d8a4796a67720
Signature size=9006
Authority=Developer ID Application: Visicom Media Inc. (6SUWV7QQBJ)
Authority=Developer ID Certification Authority
Authority=Apple Root CA
Timestamp=7 Jul 2022, 21:58:09
Info.plist entries=20
TeamIdentifier=6SUWV7QQBJ
Runtime Version=12.3.0
Sealed Resources version=2 rules=13 files=4
Internal requirements count=1 size=188
Thanks in advance!
Post not yet marked as solved
In our application, we play video-on-demand (VOD) content and display subtitles in different languages. The format we prefer for subtitles is WebVTT. We are planning to enhance caption styling (text color, background color, font weight, etc.) in WebVTT files. In our current flow, subtitles and images are loaded in 6-second chunks.
Below is an example of one of the subtitle parts we use:
WEBVTT
X-TIMESTAMP-MAP=MPEGTS:0,LOCAL:00:00:00.000
Post not yet marked as solved
we are facing this error at a high frequency when we try to initiate download using AVAggregateAssetDownloadTask for protected contents.
due to this error few of our customers are stuck in performing their download.
seeking support to solve this issue