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 minutes from that text.
AAC file
AAC audio file to file in English
AAC audio file to file 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. The engine reads 99+ languages.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps
In short
Transcribsi reads the AAC audio file in English and writes the minutes. The file comes off the platform as it is, one file may be up to 30 minutes, and the free plan gives 3 files a day.
How to get the file and turn it into file
- 1
Check the codec of the file
AAC is MPEG-4 part3 and stands in the list of the audio formats of the VLC player next to MP3
- 2
Attach the recording
The AAC audio file goes to the service through the upload widget; the speech is English, and the minutes comes back into the chat.
- 3
Apply the instruction of the task
The text of the AAC audio file is given to the instruction of the minutes, and the answer is written in the sections Attendees, Agenda, Discussion by item, one after another.
- 4
Tell the engine what it hears
The engine reads 99+ languages; the speech of this AAC audio file is in English, and the widget carries that setting for the minutes.
- 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
| What | What the platform says |
|---|---|
| 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 |
The case
What the recording does not give you
The VLC player reads AAC among the audio formats it plays: AAC is MPEG-4 part3 and stands next to MP3 in the list. The AAC audio file is only the input: the engine reads the English speech and writes the minutes out of the transcript.
Tips
The instruction of the minutes is already written.
Set the language of the AAC audio file before you send the file.
Take the file of the AAC 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.
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 file
What does the AAC keep for 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 file of the AAC audio file is the input of the engine, and the minutes is written from it.
Who reads the minutes after the AAC audio file is sent?
the person who keeps the record. The transcript of the AAC audio file is read first, and the minutes comes out of it in the sections Attendees, Agenda, Discussion by item.
What do I get without a card?
3 files a day of up to 30 minutes every day, and the export of the text in the formats of the service, so the minutes comes back in every one of them.
Do I need an account for the AAC audio file?
The file of the AAC audio file and the widget are enough: the engine reads the English speech and writes the minutes.
Related pages
- The same task on aac audio file to text video to blog post ruThe same task on another recording, with the same steps and the same sections.
- Meeting minutes ready to fileThe 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.
3 files a day up to 30 minutes, free99+ languagesSpeaker separation and timestamps