While testing my app on iOS 14, I found some mp3-format files not working properly. There's no error from start to end, but sounds only heard in the very beginning and muted in the following seconds.
When seek reaches the unbuffered time point, the '.AVPlayerItemPlaybackStalled' notification will be triggered continuously.
Reproducible resource links: https://chtbl.com/track/9G554/resezfm.meldingcloud.com/ueditor/audio/2208/1059425609572.mp3
[AVURLAssetPreferPreciseDurationAndTimingKey: true]