Transcribe M4A to text on your own computer

An M4A file is what you get when an iPhone or iPad records a voice memo, when a Mac records audio, and when Zoom saves the audio-only track of a meeting. To transcribe M4A to text, drop the file into TrueScribe. It reads M4A as it is on Windows and Linux, with no conversion, no upload and no account. The free version has no time or file limit.

This guide covers where M4A files come from, how to get one onto the computer, the M4A to text steps in TrueScribe, and what Free and Pro include.

Where the M4A comes from

M4A is Apple’s container for AAC audio. The Voice Memos app on iPhone and iPad saves every recording as M4A, and so do some handheld recorders and phone recorder apps. Zoom’s computer recording writes an audio-only file named audio[number].m4a next to the video. Transcription only needs the sound, so the M4A is the file to take.

Get the file onto the computer the way you would move any file: share it from the phone to your mail or a cloud folder, connect the phone with a cable, or copy it from the recorder’s memory card. TrueScribe needs nothing more than the file in a folder.

TrueScribe accepts MP3, WAV, M4A, AAC, FLAC, OGG and Opus audio, and MP4, MKV, MOV, WebM, AVI, WMV, FLV and M4V video.

How it works in TrueScribe

1. Drop the M4A anywhere in the TrueScribe window, or select Transcribe Files on the home screen and pick the file.
2. TrueScribe detects the spoken language. If the memo is in one language you know, you can select it instead.
3. Wait for the transcript. It appears in the library next to the recording.

TrueScribe runs Whisper on your computer. It suggests a model that suits your hardware, downloads it once on first use and reuses it offline after that. Graphics cards from AMD, Intel and NVIDIA speed up transcription with no CUDA toolkit to install, and a machine without one transcribes on the CPU. A ten-minute memo is a short job; a two-hour recording takes longer on a slower computer, but it never leaves the machine.

Then play the recording back against the waveform and correct the text where it differs, with undo and redo. A memo recorded on a phone often carries a name or a term Whisper mishears. Enter it in the custom vocabulary once and the next transcript spells it right.

What you get

• Unlimited M4A transcription (Free). Every available transcription model, with no time or file limit.
• Editing, playback and search (Free). Correct the text against the audio, and search the text of every memo in the library later.
• AI Research (Free). Ask what a memo was about, with a local model or a cloud provider you configure.
• Export as TXT, SRT and WebVTT (Free). Under Content, Segments keeps the timestamps and Complete exports continuous prose. The preview shows the file before you save it.
• Custom vocabulary and replacements (Free). Names and jargon spelled right from the next transcript on.
• Speaker detection and naming (Pro). When two people spoke into the phone, label who said what.
• Local translation (Pro). Translate the transcript into 25 languages on your computer and keep the original.
• Watch folders (Pro). Point TrueScribe at the folder your phone’s sync client or your recorder drops files into, and it transcribes each new M4A on its own.
• More export formats (Pro). DOCX, PDF, Markdown, JSON and CSV.

Limits

TrueScribe does not pull recordings off the phone. Move the file first, then transcribe it. It does not edit the audio either, so there is no trimming, no noise reduction and no conversion to another format. A memo recorded in a pocket or across a room produces more errors, and Whisper makes mistakes with names and numbers, so read the transcript against the audio before you rely on it. Speaker names need Pro. The first transcription needs a connection to download the model. TrueScribe runs on Windows and Linux, not on macOS.

Related guides

• MP3 to text covers the other format a phone or recorder saves, with the same steps for dropping it into the library.
• Transcribe voice memos from your phone shows how to get the memo off the phone before you drop it in.
• Every machine you use is a Mac? See how TrueScribe compares with MacWhisper, a local Whisper app for the Mac.

Download TrueScribe and drop in your first memo, or see what Pro includes.