Describe the bug

When playing back HEVC/H.265 or 4K UHD content, the Native Player feature will either not play or on mobile, playback with degraded audio.

Steps to Reproduce

1. Open Swiftfin
2. Navigate to the Gear icon in the top-right.
3. Scroll down until you see an option for "Experimental". Open it.
4. Under the "Experimental" section, enable Native Player.
5. Navigate to any media that is formatted in HEVC.
   • For me, this was attempted with untouched 4K UHD disc rips using MakeMKV.
6. Play the content back.

Results

iOS & iPadOS
On these two platforms, it will be black periodically before showing the QuickTime Audio logo. It may come to show that the audio is played back at a noticeably degraded quality.

tvOS
On the Apple TV 4K, due to bug #676, you might notice the same thing with iOS and iPadOS. However, for the time being, it seems though no content gets played back at all, showing a black screen with an error icon next to the playhead.

Application version

1.0.0(79 & 84)

Where did you install the app from?

App Store

Device information

iPhone 14 Pro Max, iPad mini (6th generation), Apple TV 4K (3rd generation)

OS version

iOS 16.3 (20D47), iPadOS 16.3 (20D47), tvOS 16.3 (20K6650), tvOS 16.3 (20K5626c)

Jellyfin server version

10.8.9