m4a.

Which audio and video formats a browser can transcribe, what each carries inside, what is discarded before the speech model hears it, and when converting is worth it.

Getting the M4A off the phone is the hard part. Four routes Apple documents to a Mac or Windows PC, then how to transcribe a voice memo in your browser.

Where Zoom saves a recording on Windows and Mac, which file to use, how to download a cloud one, and how to transcribe a Zoom recording without uploading it.

Transcribe M4A to text in your browser. What Apple's extension really means, where M4A files come from, and why a purchased track refuses to open.