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iphone - AudioFileSetProperty returning ...
https://stackoverflow.com/questions/8658386/audiofilesetproperty-returning-kaudiofileunsupportedpropertyerror-pty
The NSLog on line #6 gives me a nice dictionary with ID3 information. But when I want to alter (for instance the album name, line #9) I get an OSStatus 'pty?' in return. Anyone who can give me pointers on what I'm doing wrong. Or maybe even a better / simpler / quicker way to edit ID3 tags / metadata for audio files.
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1501691-audiofilegetpropertyinfo
Gets information about an audio file property, including the size of the property value and whether the value is writable.
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1502718-audiofilegetproperty
Discussion. Some Core Audio property values are C types and others are Core Foundation objects. If you call this function to retrieve a value that is a Core Foundation object, then this function—despite the use of “Get” in its name—duplicates the object.
Home - ID3.org
ID3 tags are the audio file data standard for MP3 files in active use by software and hardware developers around the world. ID3 tags are supported in software such as iTunes, Windows Media Player, Winamp, VLC, and hardware players like the iPod, Creative Zen, Samsung Galaxy, and …
ID3 Tag Editor
ID3 is a very popular audio file data tagging format in active use by software and hardware developers around the world. ID3 tags are supported in software such as iTunes, Windows Media Player, Winamp, YME, MusicMatch and hardware players like the iPod, Creative Zen, Toshiba Gigabeat and Sony Walkman.
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/audio_file_services
typealias AudioFilePropertyID An audio file property identifier. struct AudioFile_SMPTE_Time A data structure for describing SMPTE (Society of Motion Picture and Television Engineers) time. struct AudioFileMarker Annotates a position in an audio file. struct AudioFileMarkerList
Homer Zuo
https://homerzuo.blogspot.com/
There are some different between these two ways. By using AVURLAsset, the ID3 from some of the MP3 file cannot be extracted. Moreover, the genre information in itunes music file extracted by using AVURLAsset is a number that is 16-band format.
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