I have a php generated page that lists a few hundred m4a audio files with the audio controls.

If I use <audio preload="metadata" it doesn't load all the files due to timeouts getting the meta data from all the audio files.

If I use <audio preload="none" it loads fine and when I click play it shows the length (duration) of the m4a file I clicked play on no problem.

Is there a way to read the duration of the m4a file in PHP so I can display that? I can get the duration of an mp3 in php but can't find anywhere how to get the duration of an m4a audio file in PHP