iOS 上的语音备忘录文件是什么内容类型？

Question

In IOS, if you take a Voice Memo, you can Save To Files it from the share dialog. This puts it on your iphone as a file.

I am building a mobile web form with a file picker. I am trying to make it so that the accept= of the file picker will pick up voice memo files.

Currently, accept="audio/*" does NOT allow selection of the voice memo file. Accept="*" does.

So the correct answer must be that the content-type is some other content type and not audio/*. Can anybody shed light on what it is?

Answer 1

Testing with https://htmlstrip.com/mime-file-type-checker on my iPhone, recorded a voice file, saved file and uploaded, this site tells me its:

audio/x-m4a

Also perhaps the component/lib for the file picker you're using doesn't support the particular filetype, or it's filtering it internally. Not sure what you're using there, but in vanilla HTML this seems doable