AVPlayerController. Internal constraints conflicts on tvOS.

Thanks for the post and description. Unfortunately I don’t see the code or how you are presenting the AVPlayerViewController but this is very interesting as if you look at the documentation doesn't support subclassing AVPlayerViewController. From the official docs:

The framework doesn't support subclassing AVPlayerViewController. Please read the note on the documentation:

https://developer.apple.com/documentation/avkit/avplayerviewcontroller

Can you provide more information? My recommendation is to download this sample and see how is been build https://developer.apple.com/documentation/avkit/playing-video-content-in-a-standard-user-interface

Albert  WWDR

Thank you for your response and for the suggestions.

Here are the case I tried.

• Create simple app on tvOS (26.0) in Swift (interface=storyboard)

XCode v26.3

tvOS v26.0

• Update ViewController.swift file

import UIKit
import AVKit

class ViewController: UIViewController {
    let playerViewController = AVPlayerViewController()

    let button: UIButton = {
        let btn = UIButton(type: .system)
        btn.setTitle("Show video", for: .normal)
        btn.translatesAutoresizingMaskIntoConstraints = false
        return btn
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        configureButton()
    }

    func configureButton() {
        view.addSubview(button)
        NSLayoutConstraint.activate([
            button.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            button.centerYAnchor.constraint(equalTo: view.centerYAnchor)
        ])
        button.addTarget(
            self,
            action: #selector(showVideo),
            for: .primaryActionTriggered
        )
    }

    @objc func showVideo() {
        present(playerViewController, animated: true)
    }
}

After button is pressed:

`UIScene` lifecycle will soon be required. Failure to adopt will result in an assert in the future.
UITextView 0x105823800 is switching to TextKit 1 compatibility mode because its layoutManager was accessed. Break on void _UITextViewEnablingCompatibilityMode(UITextView *__strong, BOOL) to debug.
Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don't expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    "<NSLayoutConstraint:0x60000213d3b0 UIStackView:0x105546170.width >= 217   (active)>",
    "<NSLayoutConstraint:0x60000213d400 H:|-(>=95)-[UIStackView:0x105546170]   (active, names: '|':UIView:0x105544280 )>",
    "<NSLayoutConstraint:0x60000213d450 UIStackView:0x105546170.trailing == UIView:0x105544280.trailing - 95   (active)>",
    "<NSLayoutConstraint:0x60000213d590 H:|-(0)-[UIView:0x105544280]   (active, names: '|':_AVFocusContainerView:0x105524a70 )>",
    "<NSLayoutConstraint:0x60000213d5e0 UIView:0x105544280.trailing == _AVFocusContainerView:0x105524a70.trailing   (active)>",
    "<NSLayoutConstraint:0x60000213e710 '_UITemporaryLayoutWidth' _AVFocusContainerView:0x105524a70.width == 0   (active)>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x60000213d3b0 UIStackView:0x105546170.width >= 217   (active)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. 
	Try this: 
		(1) look at each constraint and try to figure out which you don't expect; 
		(2) find the code that added the unwanted constraint or constraints and fix it. 
(
    "<NSLayoutConstraint:0x60000213d400 H:|-(>=95)-[UIStackView:0x105546170]   (active, names: '|':UIView:0x105544280 )>",
    "<NSLayoutConstraint:0x60000213d450 UIStackView:0x105546170.trailing == UIView:0x105544280.trailing - 95   (active)>",
    "<NSLayoutConstraint:0x60000213d590 H:|-(0)-[UIView:0x105544280]   (active, names: '|':_AVFocusContainerView:0x105524a70 )>",
    "<NSLayoutConstraint:0x60000213d5e0 UIView:0x105544280.trailing == _AVFocusContainerView:0x105524a70.trailing   (active)>",
    "<NSLayoutConstraint:0x60000213e710 '_UITemporaryLayoutWidth' _AVFocusContainerView:0x105524a70.width == 0   (active)>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x60000213d450 UIStackView:0x105546170.trailing == UIView:0x105544280.trailing - 95   (active)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
Setting modalPresentationStyle once <AVPlayerViewController: 0x106026000> has been presented will have no effect until it is dismissed and presented again.

BTW, I get no warnings when I test it on iOS.