Use AVPlayer, how to get the audio spectrum amplitudes in the video?

Hi, I need to do a function to convert the audio in the video into a sound animation. I use AVPlayer to play the video, but I don't find the spectrum data that the api can extract the audio. I know that AVAudioEngine can do this, but can AVPlayer be? Please give me a hint if you can, thank you.

/// AVAudioEngine can get amplitudes, but use AVPlayer how to get?
class AudioSpectrumPlayer {
    private let engine = AVAudioEngine()
    private let player = AVAudioPlayerNode()
    
    private var fftSize: Int = 2048
    
    init() {
        engine.attach(player)
        engine.connect(player, to: engine.mainMixerNode, format: nil)
        engine.mainMixerNode.installTap(onBus: 0, bufferSize: AVAudioFrameCount(fftSize), format: nil, block: { [weak self](buffer, when) in
            guard let strongSelf = self else { return }
            if !strongSelf.player.isPlaying { return }
            buffer.frameLength = AVAudioFrameCount(strongSelf.fftSize)
            let amplitudes = strongSelf.fft(buffer)
            /// get spectrum data at here
        })
        engine.prepare()
        try! engine.start()
    }
}