My project is a TV player app for HLS streams with fairplay encryption. It is made on swiftUI for iPhone and iPad, it is in production.
I have enabled the target "Mac (Designed for iPad)" in the project settings, and It is working perfectly on Mac M1 chips when running the app from the Mac AppStore.
The Mac version has never been main main focus, but it is nice to have it working so easily.
However when I run the app from Xcode, by selecting "My Mac (Designed for iPad)", everytime AVPlayer wants to start playback I am ejected from the app and the only thing I get from the logcat is:
Message from debugger: Terminated due to signal 9
Why? And Why does it work when running the app published on the appstore?
I was able to debug a bit and identify which line of code triggers the issue but I am still stuck:
I am using an AVAssetResourceLoaderDelegate to load the Fairplay Keys instead of the default one (because I need some authentication parameters in the HTTP headers to communicate with the DRM Proxy).
So, in the process I am able to request SPC data and CKC (I have verified the data), and then when the loadingRequest.finishLoading() is called.. BOOM the app is terminated and it triggers the log Message from debugger: Terminated due to signal 9.
I am sharing the delegate method from the AVAssetResourceLoaderDelegate where it happens. This has been written a while ago and is running fine on all devices. If you are not used to this delegate, it is used by AVPlayer whenever a new mediaItem is set with the method: AVPlayer.replaceCurrentItem(with: mediaItem)
func resourceLoader(_ resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource loadingRequest: AVAssetResourceLoadingRequest) -> Bool {
guard let dataRequest = loadingRequest.dataRequest else { return false }
getFairplaycertificate { data, _ in
// Request Server Playback Context (SPC) data
guard
let certificate = data,
let contentIdData = (loadingRequest.request.url?.host ?? "").data(using: String.Encoding.utf8),
let spcData = try? loadingRequest.streamingContentKeyRequestData(
forApp: certificate,
contentIdentifier: contentIdData,
options: [AVContentKeyRequestProtocolVersionsKey: [1]]
) else {
loadingRequest.finishLoading(with: NSError(domain: "tvplayer", code: -1, userInfo: nil))
print("⚠️", #function, "Unable to get SPC data.")
return false
}
// Now the CKC can be requested
let networkId = loadingRequest.request.url?.host ?? ""
self.requestCKC(spcData: spcData, contentId: networkId) { ckc, error in
if error == nil && ckc != nil {
// The CKC is correctly returned and is sent to AVPlayer. Stream is decrypted
dataRequest.respond(with: ckc!)
loadingRequest.contentInformationRequest?.contentType = AVStreamingKeyDeliveryContentKeyType
loadingRequest.finishLoading() // <--- THIS LINE IS GUILTY!!!
} else {
print("⚠️", #function, "Unable to get CKC.")
loadingRequest.finishLoading(with: error)
}
}
return true
}
return true
}
If I comment loadingRequest.finishLoading() or if I replace it by: loadingRequest.finishLoading(with: error), the app is not terminated but my decryption keys are not loaded. That's the only clue I have so far.
Any help would be appreciated.
What should I look for?
Is there a way to get a detailed error stacktrace?
Thanks.
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I've been encountering a substantial increase in the following error log and am eager to find its root cause. The pattern of these logs emerge predominantly when attempting to play downloaded FPS DRM files(MOVPKG files). Except for a few rare instances, most occurrences are associated with content downloaded in previous OS versions, leading to playback issues following recent OS updates.
The error log I've been encountering is as follows:
Error Domain=CoreMediaErrorDomain Code=-16845 "HTTP 400: (unhandled)"
Even after searching, there are hardly any cases available, and the only thing I found is these issues
https://github.com/jhomlala/betterplayer/issues?q=is%3Aissue+16845+is%3Aclosed
I've been advising users to delete and re-download the affected content, which, in all cases, results in successful playback.
I'm seeking advice from anyone who might have experienced similar issues. If you've encountered a comparable situation or have any suggestions, I would greatly appreciate your input.
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i am using DRM content in my player. facing this error frequently . we used both licenseUrl ,certificateUrl and DRM token .Content is not playing getting this error .
Hello,
I'm having an issue where my app is in TestFlight, and some of my testers are reporting that FairPlay protected videos are not playing back in iOS 17.
It's been working fine in iOS 16 (my app's initial target).
I can see from the debug logs that for an online stream request -
contentKeySession(_ session: AVContentKeySession, didProvide keyRequest: AVContentKeyRequest)
is never called.
Whereas, a download for offline playback request, the function is called.
I've used much of the sample code in "HLS Catalog With FPS" as part of the FPS developer package.
All of my m3u8 files are version 5 and contain encryption instructions like below:
#EXT-X-KEY:METHOD=SAMPLE-AES,URI="skd://some-uuid",KEYFORMAT="com.apple.streamingkeydelivery",KEYFORMATVERSIONS="1"
Here's a short excerpt of the code being run:
let values = HTTPCookie.requestHeaderFields(with: cookies)
let cookieOptions = ["AVURLAssetHTTPHeaderFieldsKey": values]
assetUrl = "del\(assetUrl)"
clip!.assetUrl = AVURLAsset(url: URL(string: assetUrl)!, options: cookieOptions)
clip!.assetUrl!.resourceLoader.setDelegate(self, queue: DispatchQueue.global(qos: .default))
ContentKeyManager.shared.contentKeySession.addContentKeyRecipient(clip!.assetUrl!)
urlAssetObserver = self.observe(\.isPlayable, options: [.new, .initial]) { [weak self] (assetUrl, _) in
guard let strongSelf = self else { return }
strongSelf.playerItem = AVPlayerItem(asset: (self!.clip!.assetUrl)!)
strongSelf.player.replaceCurrentItem(with: strongSelf.playerItem)
}
The error thrown is:
Task .<8> finished with error [18,446,744,073,709,550,614] Error Domain=NSURLErrorDomain Code=-1002 "unsupported URL" UserInfo={NSLocalizedDescription=unsupported URL, NSErrorFailingURLStringKey=skd://some-uuid, NSErrorFailingURLKey=skd://some-uuid, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask .<8>"
), _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask .<8>, NSUnderlyingError=0x2839a7450 {Error Domain=kCFErrorDomainCFNetwork Code=-1002 "(null)"}}
Which I believe is being thrown from AVPlayerItem.
Without the delegate, it appears to playback fine. However, I need the delegate (I think), since I'm appending some query params to each request for the segments.
I have an observer on the playerItem, per the example project which is changing the status to .failed once he -1002 error is thrown.
Please let me know if anything rings to mind to try, or if I can provide any additional info.
Thanks in advance!
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Hi Apple Team, we are observing following error intermittently when trying to playback FairPlay protected HLS streams. The error happens immediately after loading the certificate.
Playback with same certificate on same device(Mac, iPhone) works most of time but intermittently this error is observed with following codes. The code=6 means MEDIA_KEYERR_DOMAIN but I did not find any information on what does systemCode=4294955417 mean? Is there a way to check what does this system code mean and what could be causing this intermittent behaviour?
{
"code": 6,
"systemCode": 4294955417
}
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We have to play some encrypted videos from server.
In AVAssetResourceLoaderDelegate we got the ckc data correctly and responded with that. Then video just starts playing and stops immdediately. When we check the playerItem error description we got Error Domain=AVFoundationErrorDomain Code=-11819 "Cannot Complete Action" UserInfo={NSLocalizedDescription=Cannot Complete Action, NSLocalizedRecoverySuggestion=Try again later.}. Any one encountered this?
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The error shown in the picture appears when I try to link the StartScene.sks file to the code
Attached are pictures of the code
Please help me🙏🏻
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The error shown in the picture appears when I try to link the StartScene.sks file to the code
Attached are pictures of the code
Please help me🙏🏻
Post not yet marked as solved
Hi Team,
We see an issue with this version if CoreMedia requesting multiple qualities at all times for a stream. We don't see this issue on 1.0.0.21C62. We are unsure what would be causing this.
[2024-01-05 16:53:51] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=630&_HLS_part=0 HTTP/1.0" 200 1145 2529 1090199 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:52] "GET /live/cinecanal/live/cinecanal_1080p/audio.m3u8?_HLS_msn=630&_HLS_part=0 HTTP/1.0" 200 1146 2396 1013356 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:52] "GET /live/cinecanal/live/cinecanal_1080p/a_1459_2452140264_630_0.fmp4 HTTP/1.0" 200 1139 24975 1013385 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:52] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=630&_HLS_part=1 HTTP/1.0" 200 1145 2603 998670 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:52] "GET /live/cinecanal/live/cinecanal_720p/v_1058_2452140000_630_1.fmp4 HTTP/1.0" 200 1138 40534 998739 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:53] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=630&_HLS_part=2 HTTP/1.0" 200 1145 2677 835327 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:53] "GET /live/cinecanal/live/cinecanal_720p/v_1058_2452140000_630_2.fmp4 HTTP/1.0" 200 1138 57656 835207 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:53] "GET /live/cinecanal/live/cinecanal_1080p/audio.m3u8?_HLS_msn=630&_HLS_part=1 HTTP/1.0" 200 1146 2458 986038 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:53] "GET /live/cinecanal/live/cinecanal_1080p/a_1459_2452140264_630_1.fmp4 HTTP/1.0" 200 1139 24700 986032 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:54] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=630&_HLS_part=3 HTTP/1.0" 200 1145 2751 1013257 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:54] "GET /live/cinecanal/live/cinecanal_720p/v_1058_2452140000_630_3.fmp4 HTTP/1.0" 200 1138 55900 1013324 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:54] "GET /live/cinecanal/live/cinecanal_1080p/audio.m3u8?_HLS_msn=630&_HLS_part=2 HTTP/1.0" 200 1146 2520 1016693 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:54] "GET /live/cinecanal/live/cinecanal_1080p/a_1459_2452140264_630_2.fmp4 HTTP/1.0" 200 1139 25014 1016717 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:55] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=630&_HLS_part=4 HTTP/1.0" 200 1145 2825 917753 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:55] "GET /live/cinecanal/live/cinecanal_720p/v_1058_2452140000_630_4.fmp4 HTTP/1.0" 200 1138 103745 917903 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:55] "GET /live/cinecanal/live/cinecanal_1080p/audio.m3u8?_HLS_msn=630&_HLS_part=3 HTTP/1.0" 200 1146 2582 958102 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:55] "GET /live/cinecanal/live/cinecanal_1080p/a_1459_2452140264_630_3.fmp4 HTTP/1.0" 200 1139 24782 958195 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:56] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=630&_HLS_part=5 HTTP/1.0" 200 1145 2899 931101 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:56] "GET /live/cinecanal/live/cinecanal_720p/v_1058_2452140000_630_5.fmp4 HTTP/1.0" 200 1138 112113 931228 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:56] "GET /live/cinecanal/live/cinecanal_1080p/audio.m3u8?_HLS_msn=630&_HLS_part=4 HTTP/1.0" 200 1146 2644 935550 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:56] "GET /live/cinecanal/live/cinecanal_1080p/a_1459_2452140264_630_4.fmp4 HTTP/1.0" 200 1139 24824 937720 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:57] "GET /live/cinecanal/live/cinecanal_1080p/audio.m3u8?_HLS_msn=630&_HLS_part=5 HTTP/1.0" 200 1146 2706 895680 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:57] "GET /live/cinecanal/live/cinecanal_1080p/a_1459_2452140264_630_5.fmp4 HTTP/1.0" 200 1139 24843 895734 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
[2024-01-05 16:53:57] "GET /live/cinecanal/live/cinecanal_720p/video.m3u8?_HLS_msn=631&_HLS_part=0 HTTP/1.0" 200 1145 2529 907045 "-" "AppleCoreMedia/1.0.0.21B101 (iPhone; U; CPU OS 17_1_2 like Mac OS X; en_us)"
Post not yet marked as solved
Hello all,
I am a completely new to iOS development, and I need to make an app that will be playing encrypted content using Fairplay. Right now I am using the Sample client in the latest FPS Server SDK (HLSCatalog), and from what I understand the default sources in Streams.plist are not protected. There's an entry with is_protected=YES and where I can replace the playlist_url, but I was wondering if I could use the .m3u8 files in the FPS Test Content found at https://developer.apple.com/streaming/fps/ ? If so, I don't really know how to.
In one of the .m3u8 files of the Test Content, I could find the "content_key_id_list" example value that's also mentioned in the client's README (skd://twelve), which is why I'm asking.
Thanks in advance!
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Per FP Streaming programming guide,
The SPC includes a specific TLLV to provide the state of the media content playback. And total value length of this is 16 in decimals.
Here i'm trying to retrieve the Playback State. which is of 20-23 ByteRange.
byte[] mediaPlaybackStateBlock = getBlock(MEDIA_PLAYBACK_STATE).getValueData();
playbackState = Arrays.copyOfRange(mediaPlaybackStateBlock, 20, 24);
I'm endup in issue - arraycopy: length -4 is negative.
I'm bit confused on how to retrieve the playback state from 20-23 ByteRange when its length jus 16..
Kindly clarify
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Hello everyone,
I was playing a livestream when I received the error -16831/START-TIME is too close to live returned from the AVPlayerItemNewErrorLogEntry function. I don't know why the error is returned, please help me explain.
Similarly, I am also getting error: -12888/Playlist File unchanged for longer than 1.5 * target duration , I also read error -12888 in the documentation page 170: https://docs.huihoo.com/apple/wwdc/ 2018/502_measuring_and_optimizing_hls_performance.pdf
but still don't understand the reason.
Hope you can help!
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how to use AIGC in the workplace to assist with work？
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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
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We are aiming to apply KeyRotation for FPS service for our content streaming service.
It is not clear from the spécifications how "FairPlay Streaming Programming Guide.pdf" How to apply this feature and let the "FPS DRM key server KSM " send multiple-keys at a time in one licence :(CKC) in the key rotation moment. without using the Renting and Leasing key features.
Note that we don't use Offline Playback capabilities for our streams.
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Hi
I was wondering if there any D Function implementations on Python to derive dASK?
Thank you
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Hi
I am trying to implement D Function in python.
import hashlib
from Crypto.Cipher import AES
from Crypto.Hash import SHA
from Crypto.Util.Padding import pad as padding
from Crypto.PublicKey import RSA
PRIME = 813416437
NB_RD = 16
def dfunction(R2, ASk):
tmp = bytearray(20)
pad = bytearray(64)
MBlock = [0] * 14
P = PRIME
if len(R2) >= 56:
return -1 # kDRMSKDServerParamErr
# Padding until a multiple of 56B
pad[:len(R2)] = R2
pad[len(R2)] = 0x80
pad[len(R2) + 1:56] = [0] * (56 - len(R2) - 1)
# Create 14 32b values
for i in range(14):
MBlock[i] = (pad[4 * i] << 24) ^ (pad[4 * i + 1] << 16) ^ (pad[4 * i + 2] << 8) ^ pad[4 * i + 3]
# Reunify into 2 32 bits values
#MBlock[0] += sum(MBlock[1:7])
#MBlock[1] = 0
#MBlock[1] += sum(MBlock[7:])
# Reunify into 2 32 bits values
for i in range(1, 7):
MBlock[0] += MBlock[i]
MBlock[1] = 0
for i in range(7):
MBlock[1] += MBlock[i + 7]
# Apply the function (C_r)
for i in range(2):
for r in range(NB_RD):
if MBlock[i] & 1:
MBlock[i] >>= 1
else:
MBlock[i] = (3 * MBlock[i] + 1) % P
# Append to M
for i in range(4):
pad[56 + i] = (MBlock[0] >> (8 * i)) & 0xFF
pad[60 + i] = (MBlock[1] >> (8 * i)) & 0xFF
h = hashlib.sha1()
h.update(pad)
hh = h.digest()[:16]
cipher = AES.new(ASk, AES.MODE_ECB)
DASk = cipher.encrypt(padding(hh, AES.block_size))
return DASk
Then, i am trying to match integrities and they does not match. I think there is an mistake in D Function implementation. Any clue whats wrong?
Thank you
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Hello there,
I understand most components of the FairPlay Streaming Server SDK haven't been updated in about a decade, but the verify_ckc tool no longer works, and it's really helpful. It throws errors when trying to import the Crypto library...probably something to do with this whole Python 2 vs Python 3 thing.
I don't know anything about Python or I'd try to fix it myself but...I'm just bringing this up in case anyone from the FairPlay team reads these things!
Thx
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Dear Apple Engineers,
I have downloaded the FairPlay Streaming SDK 4.4 - In which i could able to make use of the fps_safari_hls_example.html file to make a successful playback of fairplay protected content in safari, by pointing our fairplay license server, .m3u8 file & certificate.
Now that, i'm trying to achieve the renewal concept, so i tried to use the fps_safari_hls_key_renewal.html file also setting up the ContentKeyDuration to 20sec in FP license server backend. But client didn't make any subsequent FP license request around when nearing 20th sec or post 20th sec. I wonder if this use case be achieved in safari,
the only extra functionality i could see in renewal html file is below piece of code
await runAndWaitForLicenseRequest(session, keyURI, () => {
session.update(stringToUInt8Array("renew"))
});
Based on the above piece, i assume that we are making sure that client to aware the when to renew the license. But in my case, there were no FP request is made , in-fact, this piece of code got executed immediate after the 1st FP license request call & protected media continues to play despite setting the ContentKeyDuration to 20sec with LIMITED as contentkeyType .
Could you please suggest on how to achieve the subsequent renewal request from client based on the ContentKeyDuration send in the CKC response using this sample renewal html file..? Is there any tewaks to be made in html file, kindly suggest.
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Hi guys, I'm implementing FairPlay support for a video streaming application. I've managed to get as far as generating the SPC and acquiring a license from the license server. However when it comes to parsing the license (CKC) returned from the server, the FPS module returns error code -42671. Has anyone else faced this before and / or knows what the fix is? I thought passing it the license should be enough unless additional data is required?
