Audacity opens an M4A file with the FFmpeg library: it allows the program to import and export a much larger range of audio formats, including M4A (AAC), AC3 and WMA.
M4A file
M4A audio file to structured notes in English
M4A audio file to structured notes in English: send the file and get the text with the timecodes. One file may be up to 30 minutes on the free plan, no minute limit on Pro.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps
In short
One M4A audio file is enough for the written notes. The engine reads it in English and writes the sections Thesis, Key ideas, Definitions, and every line of the answer comes from the recording. The free plan gives 3 files a day.
How to get the file and turn it into structured notes
- 1
Find the file
Any file type can be stored in Google Drive, so the recording of the phone is uploaded to the account as it is
- 2
Hand the file over
The recording of the M4A audio file is attached to the widget of the page with the language of the speech set to English, and the written notes comes back as a file of text.
- 3
Ask the written instruction for the written notes
The ready instruction reads the transcript of the M4A audio file as the student who missed the class, and the written notes comes in the sections Thesis, Key ideas, Definitions.
- 4
Mark the language of the speech
The engine reads 99+ languages; this M4A audio file is in English, so the language of the widget is set to English for the written notes.
- 5
Check the file before the upload
A voice message of the Telegram Bot API is an .OGG file encoded with OPUS, an .MP3 file or an .M4A file
What comes back from the engine
- TXT
One segment per line, the way a person wrote it down. It is the format to paste into a ticket, a chat or a document.
- TXT, CSV
The start and the end time of every segment, and the speakers named separately when you ask for it.
- SRT, VTT
SRT and VTT with the time of every line, so the recording can carry its own subtitles.
- Markdown, DOCX
The transcript is edited through the API and exported as Markdown for a wiki, or as DOCX for a review.
What M4A keeps, and what it says about it
The Telegram Bot API takes an audio file only in the .MP3 or .M4A format, and it sends a voice message in the .OGG file encoded with OPUS, .MP3 or .M4A format.
Google Drive keeps the M4A among the files it stores: any file type can be stored in Drive, and the list of the audio formats it previews names MP3, MPEG, WAV, .ogg and .opus.
In the FAQ of the FFmpeg library of Audacity the M4A is written next to the codec it carries: M4A (AAC), AC3 and WMA.
A voice message of the Telegram Bot API is an .OGG file encoded with OPUS, an .MP3 file or an .M4A file.
up to 30 minutes on the free plan, no minute limit on Pro
$0: 3 files a day, up to 30 minutes per file, no card
$10 a month when you pay yearly ($120 a year), or $20 a month
The case
What the recording does not give you
Audacity opens an M4A file with the FFmpeg library: it allows the program to import and export a much larger range of audio formats, including M4A (AAC), AC3 and WMA. That is the part that depends on the M4A; everything after it is the work of the written notes, and it is the same for every recording.
Tips
The sections of the written notes are the same for every recording.
The engine does not translate the M4A audio file from English.
Take the file of the M4A audio file as soon as you have it.
Bots can currently send audio files of up to 50 MB in size, and the limit may be changed in the future.
Questions about M4A audio file and structured notes
Which problems can come with the M4A audio file?
Audacity opens an M4A file with the FFmpeg library: it allows the program to import and export a much larger range of audio formats, including M4A (AAC), AC3 and WMA. The engine does not change the file of the M4A audio file; it reads it as it is and writes the written notes.
What does the M4A say about the M4A audio file?
Bots can currently send audio files of up to 50 MB in size, and the limit may be changed in the future. The engine reads the English speech of the M4A audio file and writes the written notes from that text.
How is the written notes built from the M4A audio file?
The engine reads the English speech and the instruction writes the written notes in the sections Thesis, Key ideas, Definitions; every line comes from the transcript of the M4A audio file.
Is there a limit to the length of the M4A audio file?
One file of the M4A audio file may be up to 30 minutes on the free plan; the free plan gives 3 files a day.
Is a link enough for the M4A audio file?
Bring the file of the M4A audio file to your own disk and upload it here; the engine returns the written notes with the time of every line.
Related pages
The same task on m4a audio file to text podcast show notes ru
The same task on another recording, with the same steps and the same sections.
Lecture to structured notesThe page of the task: the instruction that is written for it and an example of the answer.
Transcribe audio to textWhat the service does with a file: the formats of the export, the limits and the plans.
Sources
- MAudacity manual: FFmpeg Import/Export Library (read 2026-10-25)manual.audacityteam.org · checked
- CTelegram Bot API (read 2026-10-25)core.telegram.org · checked
- SGoogle Drive Help: Files you can store in Google Drive (read 2026-10-25)support.google.com · checked
- TTranscription service page (read 2026-10-25)transcrib.si · checked
- TPricing page (read 2026-10-25)transcrib.si · checked
Reading: 4 minutesUpdated Transcribsi editorial team
Drop a recording — the text arrives in a minute
Speakers by name, a time on every line, export to TXT, SRT, VTT, CSV and Markdown.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps