有没有办法确定AVPlayer使用的是什么编解码器？

guard let asset = AVAsset(url: videoURL) else {
    return
}

let videoTrack = asset.tracks(withMediaType: .video).first
let formatDescriptions = videoTrack?.formatDescriptions as? [CMFormatDescription]

for formatDescription in formatDescriptions ?? [] {
    let codecType = CMFormatDescriptionGetMediaSubType(formatDescription)
    let codecName = FourCharCode(codecType).stringValue
    print("Video Codec: \(codecName)")
}

guard let currentItem = player.currentItem else {
    return
}

let asset = currentItem.asset
let videoTrack = asset.tracks(withMediaType: .video).first
let formatDescriptions = videoTrack?.formatDescriptions as? [CMFormatDescription]

for formatDescription in formatDescriptions ?? [] {
    let codecType = CMFormatDescriptionGetMediaSubType(formatDescription)
    let codecName = FourCharCode(codecType).stringValue
    print("Video Codec: \(codecName)")
}