Override title for "NowPlaying" on macOS when using AVPlayerView?

I'm using AVPlayerView to display a video whose title I want to override in the system-wide NowPlaying view (e.g. on Big Sur in the Notification Center).

On iOS / tvOS / Catalyst, this can (supposedly) be done by setting the AVPlayerItem's externalMetadata as desired, but this property is unsupported on macOS. What's the supported way of doing this for a "normal" AppKit app?

My simple attempt of manually setting the information via MPNowPlayingInfoCenter didn't work; I assume that's getting overwritten by the "automatic" support from AVPlayer(View) with the faulty (empty) title from the actual video.

Any pointers?

Did you ever get this to work?

Override title for "NowPlaying" on macOS when using AVPlayerView?
 
 
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