使用AVAUDIOPLAYER从音频流中获取元数据

Question

I would like to retrieve metadata (song, artist) from an audio stream with AVAUDIOPLAYER. I tried with this code, but i dont get any data from multiple URL.

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

for (NSString *format in [asset availableMetadataFormats])

Coud someone help me? maybe i did wrong? AVAUDIOPLAYER is available to do that?

Thanks

Answer 1

Here is an example of how to create an AVAsset and use it to create an AVPlayerItem which can then be associated with an instance of AVPlayer . Metadata can be retrieved by using properties of the AVAsset ...

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)


}