@Frameworks Engineer So you mean only Apple's camera app on iPhone 15 can save ProRes videos to external USB storage device, but not third party apps?

No, it is not a sandbox user. Do I need to sign-in with a sandbox account for the same?

Thanks for the answer. I want to understand what is meant by that (Volume purchases isn't supported by StoreKit 2).To put things in context, I understand AppTransaction has a field originalAppVersion which tells the original version of application purchased by the user. Will this field also identify purchases that were previously made under VPP? Can I rely on this field to identify the version of app originally purchased by the user (be it normal or VPP)? Or this field will not work for VPP?

I am looking to hear directly from Apple Engineers who advocate Core Image for video apps. My experience with DTS has not been good in the last few years, I have found DTS views to be opposite of Apple Engineers when I interacted with them in WWDC labs!

I read StoreKit2 can not fetch and validate receipts for volume purchases made by users before, is that correct?

This WWDC video says HDR content can be displayed on iOS using EDR APIs. I want to know if inbuilt CALayers such as AVPlayerLayer or AVCaptureVideoPreviewLayer do it in any different way?

Thank you @Media Engineer for the response. I asked because DTS said this could be one of the potential causes of AV Drift but when I insisted to clarify if this is indeed the case, they couldn't confirm.

But Apple support is not acknowledging the issue!

I have submitted innumerable number of screenshots where 24 hours report is off by more than 90% but they simply don't get it. They get away by saying it's just an estimate and not an actual figure. But the fact is 24 hours report at 2 AM UTC was always the final sales report for that day. Not anymore, and seeing 24 hours figure anytime of day shows a low double digit random number!

All this, and a lot more, is already done but no respite.

Hello @Media Engineer, can I know what is the correct way to record video with aac audio where input audio has 4 channels but AVAssetWriter clips it to 2 (maximum supported channels)? I guess AVCaptureMovieFileOutput does something similar.

@Media Engineer Sorry for the late response. The settings dictionary is obtained from formatDescription received in AVCaptureAudioDataOutput. Number of Channels is being set from AVAudioSession inputNumberOfChannels.

Issue is this is reproducible only on user's device and not on a test device. If it were reproducible on a test device, I would have found a solution by now.

I do not have the equipment to reproduce it unfortunately, but on the user device the error happens because audio outputSettings are incompatible with assetWriter.

What exactly isn't working? Setting videoZoomFactor = 2.0?