ios - 使用AVAUDIOPLAYER从音频流中获取元数据

Question

我想使用AVAUDIOPLAYER从音频流中检索元数据(歌曲，艺术家)。我尝试使用此代码，但没有从多个URL获取任何数据。

NSURL *url = [NSURL URLWithString:urlString];
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:url options:nil];
NSMutableDictionary *songInfo = [[NSMutableDictionary alloc] init];

for (NSString *format in [asset availableMetadataFormats])

库德有人帮我吗？也许我做错了吗？ AVAUDIOPLAYER可以做到吗？

谢谢

Answer 1

这是如何创建AVAsset并使用它创建AVPlayerItem的示例，然后可以将其与AVPlayer实例关联。可以通过使用AVAsset的属性来检索元数据。

var player = AVPlayer()      
func createAssetAndItem(){

    //create AVAsset from an NSURL. metadata can be retrieved from the asset depending on what is available
let createdAVAsset = AVURLAsset(URL: songNSURL)

    //create an AVPlayerItem from the AVAsset
let createdAVItem = AVPlayerItem(asset: createdAVAsset)

    //asscoaite AVPlayerItem with instance of AVPlayer
player = AVPlayer(AVPlayerItem: createdAVItem)


}