AAC audio file to structured notes in English
AAC 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.
Upload the AAC audio file and ask for the written notes. The speech is in English, the engine keeps the time of every line, and one file may be up to 30 minutes. The free plan gives 3 files a day.
How to get the file and turn it into structured notes
- 1
Open it with the library
The FFmpeg library of Audacity imports M4A (AAC), AC3 and WMA
- 2
Attach the recording
The file of the AAC audio file is attached in the widget of this page, and the speech is marked as English; the answer comes back as the written notes.
- 3
Turn the text into the written notes
The text of the AAC audio file is given to the instruction of the written notes, and the answer is written in the sections Thesis, Key ideas, Definitions, one after another.
- 4
Tell the engine what it hears
The speech of the AAC audio file is English, one of the 99+ languages the engine reads, and the widget is left on English while the written notes is written.
- 5
Check the file before the upload
In the table of the codecs and the containers of OBS Studio the AAC row names the MP4, MOV, MKV and TS containers
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 AAC keeps, and what it says about it
- Where the file is
The FFmpeg library of Audacity imports M4A (AAC), AC3 and WMA, a much larger range of audio formats than the program reads on its own.
- What the file is
The VLC player reads AAC among the audio formats it plays: AAC is MPEG-4 part3 and stands next to MP3 in the list.
- What can go wrong
The Telegram Bot API takes an audio file in the .MP3 or .M4A format, and the M4A carries the AAC codec.
- What the platform says
In the table of the codecs and the containers of OBS Studio the AAC row names the MP4, MOV, MKV and TS containers.
- What the platform says
In the FAQ of the FFmpeg library the M4A is written next to the codec it carries: M4A (AAC), AC3 and WMA.
- Length of one file
up to 30 minutes on the free plan, no minute limit on Pro
- Free plan
$0: 3 files a day, up to 30 minutes per file, no card
- Pro plan
$10 a month when you pay yearly ($120 a year), or $20 a month
What the recording does not give you
The AAC audio file holds the voices and the order of the words. The FFmpeg library of Audacity imports M4A (AAC), AC3 and WMA, a much larger range of audio formats than the program reads on its own. From that text comes the written notes, in the sections Thesis, Key ideas, Definitions.
Tips
A name that was never said in the AAC audio file stays out of the written notes.
A recording of the AAC audio file in English is read as English.
Check who may download the file of the AAC audio file.
Bots can currently send audio files of up to 50 MB in size, and the limit may be changed in the future.
Because of software patents Audacity cannot include the FFmpeg software: the free FFmpeg library of a third party is installed separately.
Questions about AAC audio file and structured notes
What does the AAC say about the AAC audio file?
The Telegram Bot API takes an audio file in the .MP3 or .M4A format, and the M4A carries the AAC codec. The engine reads the English speech of the AAC audio file and writes the written notes from that text.
Which problems can come with the AAC audio file?
Because of software patents Audacity cannot include the FFmpeg software: the free FFmpeg library of a third party is installed separately. The engine does not change the file of the AAC audio file; it reads it as it is and writes the written notes.
What comes back after the English AAC audio file is read?
the written notes in the sections Thesis, Key ideas, Definitions, with the time of every line of the recording of the AAC audio file.
How long may the file be, and how much is free?
One file may be up to 30 minutes on the free plan, and the free plan gives 3 files a day for the written notes.
Where does the file of the AAC audio file wait?
On the AAC. The facts of the table above name the place where the file of the AAC audio file is kept and the way it comes off.
Related pages
- The same task on aac audio file to text podcast show notes ruThe 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
- WVLC features: the formats it plays (read 2026-10-25)www.videolan.org · checked
- CTelegram Bot API (read 2026-10-25)core.telegram.org · checked
- OOBS Knowledge Base: Audio and Video Formats Guide (read 2026-10-25)obsproject.com · checked
- TTranscription service 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.