Hello, We are currently developing a mobile game using Unreal Engine 5, and we have encountered an issue where a specific video (mp4 format) stops displaying at a particular frame during playback within the game. The code within Unreal fails at the following point, causing the issue: CMTime OutputItemTime = [Output itemTimeForHostTime:CACurrentMediaTime()]; if (![Output hasNewPixelBufferForItemTime:OutputItemTime]) { return; } We have referred to the following Apple documentation: AVPlayerTimeControlStatus reasonForWaitingToPlay Upon logging, we observed the following: [2024.08.13-05.18.35:266][429]LogTemp: AMP PlayerItem.status AVPlayerItemStatusReadyToPlay [2024.08.13-05.18.35:266][429]LogTemp: AMP MediaPlayer.timeControlStatus AVPlayerTimeControlStatusWaitingToPlayAtSpecifiedRate [2024.08.13-05.18.35:266][429]LogTemp: AMP reasonForWaitingToPlay: AVPlayerWaitingToMinimizeStallsReason [2024.08.13-05.18.35:266][429]LogTemp: AMP MediaPlayer.rate 1.000000 [2024.08.13-05.18.35:268][430]LogTemp: avf CurrentMediaTime : 455097.836833 [2024.08.13-05.18.35:268][430]LogTemp: avf OutputItemTime: 3.868346 [2024.08.13-05.18.35:268][430]LogTemp: avf Sampler::Tick() fail hasNewPixelBufferForItemTime OutputItemTime: 3.868346 This issue consistently occurs with videos that have the following specifications: Codec: H.264 Resolution: 1080x608 Bitrate: 7,922,135 bits/sec Duration: 90.17 seconds Frame Rate: 30.0 fps Pixel Format: yuv420p Profile: Main We would like to inquire about the possible reasons for the playback failure and the recommended MP4 specifications for seamless playback on Apple devices. Specifically, we need guidance on recommended resolution, FPS, profile, level, and bitrate limits. Your assistance would be greatly appreciated.

I have the Facebook SDK version 17.0.2 and xcode 15. Sharing photos and links work fine but when I try sharing videos, I get the following error: Failed to log access with error: access=<PATCCAccess 0x301d12b20> accessor:<<PAApplication 0x301d27e30 identifierType:auditToken identifier:{pid:18440, version:47210}>> identifier:A9159DCD-76B1-4C77-A01E-DA611929B50B kind:intervalEvent timestampAdjustment:0 visibilityState:0 assetIdentifierCount:0 accessCount:0 tccService:kTCCServicePhotos, error=Error Domain=NSCocoaErrorDomain Code=4097 "connection to service with pid 15679 named com.apple.privacyaccountingd" UserInfo={NSDebugDescription=connection to service with pid 15679 named com.apple.privacyaccountingd}

I have the following piece of code that works in Swift 5 func test() { let url = Bundle.main.url(forResource: "movie", withExtension: "mov") let videoAsset = AVURLAsset(url: url!) let t1 = CMTime(value: 1, timescale: 1) let t2 = CMTime(value: 4, timescale: 1) let t3 = CMTime(value: 8, timescale: 1) let timesArray = [ NSValue(time: t1), NSValue(time: t2), NSValue(time: t3) ] let generator = AVAssetImageGenerator(asset: videoAsset) generator.requestedTimeToleranceBefore = .zero generator.requestedTimeToleranceAfter = .zero generator.generateCGImagesAsynchronously(forTimes: timesArray ) { requestedTime, image, actualTime, result, error in let img = UIImage(cgImage: image!) } } When I compile and run it in Swift 6 it gives a EXC_BREAKPOINT (code=1, subcode=0x1021c7478) I understand that Swift 6 adopts strict concurrency. My question is if I start porting my code, what is the recommended way to change the above code? Rgds, James

IOS 18 below FFmpeg subtitle synthesis log [Parsed_subtitles_0 @ 0x301b37650] Using font provider fontconfig [Parsed_subtitles_0 @ 0x301b37650] fontselect: (PingFangSC-Semibold, 400, 0) -> /System/Library/Fonts/LanguageSupport/PingFang.ttc, 8, PingFangSC-Semibold IOS 18 FFmpeg subtitle synthesis log [Parsed_subtitles_0 @ 0x303e825d0] Using font provider fontconfig [Parsed_subtitles_0 @ 0x303e825d0] fontselect: (PingFangSC-Regular, 400, 0) -> /System/Library/Fonts/Core/HiraginoKakuGothic.ttc, 10, . HiraKakuInterface-W4 [Parsed_subtitles_0 @ 0x303e825d0] Glyph 0x8FD9 not found, selecting one more font for (PingFangSC-Regular, 400, 0) [Parsed_subtitles_0 @ 0x303e825d0] fontselect: (PingFangSC-Regular, 400, 0) -> /System/Library/Fonts/Core/LastResort.otf, 0, LastResort In normal characters, there may be some garbled characters, such as 0x8FD9 mentioned in the log, corresponding to "这" Traditional Chinese and Simplified Chinese Normal font: Russian, Korean, Japanese, French, English, German IOS 18 below FFmpeg subtitle synthesis log fontselect: (PingFangSC-Semibold, 400, 0) -> /System/Library/Fonts/LanguageSupport/PingFang.ttc, 8, PingFangSC-Semibold IOS 18 FFmpeg subtitle synthesis log fontselect: (PingFangSC-Regular, 400, 0) -> /System/Library/Fonts/Core/HiraginoKakuGothic.ttc, 10, . HiraKakuInterface-W4 In iOS 18, the selected font has changed and instead of continuing to use PingFang.ttc, HiraginoKakuGothic. Has iOS changed the PingFang font directory, causing ffmpeg to be unable to use system fonts for subtitle synthesis

We have developed a custom player tvOS application using AVPlayer Foundation. When we hit the Siri command "What did they say?" Playback will go backwards but subtitles will not work temporarily. Anyone please suggest a solution for this issue :)

I want my app to allow the user to search for certain words in a video file and the transcript of that video. I found a Transcript class. I don't remember which Framework it is in. Would someone point me in the right direction? What Framework and Classes should I use.

Hello I am testing the new Media Extension API in macOS 15 Beta 4. Firstly, THANK YOU FOR THIS API!!!!!! This is going to be huge for the video ecosystem on the platform. Seriously! My understanding is that to support custom container formats you make a MEFormatReader extension, and to support a specific custom codec, you create a MEVideoDecoder for that codec. Ok - I have followed the docs - esp the inline header info and have gotten quite far A Host App which hosts my Media Extenion (MKV files) A Extension Bundle which exposes the UTTYpes it supports to the system and plugin class ID as per the docs Entitlements as per docs I'm building debug - but I have a valid Developer ID / Account associated in Teams in Xcode My Plugin is visible to the Media Extension System preference My Plugin is properly initialized, I get the MEByteReader and can read container level metadata in callbacks I can instantiate my tracks readers, and validate the tracks level information and provide the callbacks I can instantiate my sample cursors, and respond to seek requests for samples for the track in question Now, here is where I get hit some issues. My format reader is leveraging FFMPEGs libavformat library, and I am testing with MKV files which host AVC1 h264 samples, which should be decodable as I understand it out of the box from VideoToolbox (ie, I do not need a separate MEVideoDecoder plugin to handle this format). Here is my CMFormatDescription which I vend from my MKV parser to AVFoundation via the track reader Made Format Description: <CMVideoFormatDescription 0x11f005680 [0x1f7d62220]> { mediaType:'vide' mediaSubType:'avc1' mediaSpecific: { codecType: 'avc1' dimensions: 1920 x 1080 } extensions: {(null)} } My MESampleCursor implementation implements all of the callbacks - and some of the 'optional' sample cursor location methods: (im only sharing the optional ones here) - (MESampleLocation * _Nullable) sampleLocationReturningError:(NSError *__autoreleasing _Nullable * _Nullable) error - (MESampleCursorChunk * _Nullable) chunkDetailsReturningError:(NSError *__autoreleasing _Nullable * _Nullable) error I also populate the AVSampleCursorSyncInfo and AVSampleCursorDependencyInfo structs per each AVPacket* I decode from libavformat Now my issue: I get these log files in my host app: <<<< VRP >>>> figVideoRenderPipelineSetProperty signalled err=-12852 (kFigRenderPipelineError_InvalidParameter) (sample attachment collector not enabled) at FigStandardVideoRenderPipeline.c:2231 <<<< VideoMentor >>>> videoMentorDependencyStateCopyCursorForDecodeWalk signalled err=-12836 (kVideoMentorUnexpectedSituationErr) (Node not found for target cursor -- it should have been created during videoMentorDependencyStateAddSamplesToGraph) at VideoMentor.c:4982 <<<< VideoMentor >>>> videoMentorThreadCreateSampleBuffer signalled err=-12841 (err) (FigSampleGeneratorCreateSampleBufferAtCursor failed) at VideoMentor.c:3960 <<<< VideoMentor >>>> videoMentorThreadCreateSampleBuffer signalled err=-12841 (err) (FigSampleGeneratorCreateSampleBufferAtCursor failed) at VideoMentor.c:3960 Which I presume is telling me I am not providing the GOP or dependency metadata correctly to the plugin. I've included console logs from my extension and host app: LibAVExtension system logs And my SampleCursor implementation is here https://github.com/vade/FFMPEGMediaExtension/blob/main/LibAVExtension/LibAVSampleCursor.m Any guidance is very helpful. Thank you!

When I use ReplayKit's exportClipToURL function on iOS to capture a 15-second replay, the resulting video quality is poor, with snowy artifacts on the damaged visuals and audio distortion.