AAC audio file to flashcards for revision in Russian
AAC audio file to flashcards for revision in Russian: 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 AAC audio file becomes the revision deck: the engine reads the Russian speech and the sections Cards, Terms to define, Self-check questions are written from the transcript. The free plan gives 3 files a day of up to 30 minutes.
How to get the file and turn it into flashcards for revision
- 1
Send it as an audio file
For an audio file the Telegram Bot API asks for the .MP3 or .M4A format
- 2
Hand the file over
The recording of the AAC audio file is attached to the widget of the page with the language of the speech set to Russian, and the revision deck comes back as a file of text.
- 3
Apply the instruction of the task
The text of the AAC audio file is given to the instruction of the revision deck, and the answer is written in the sections Cards, Terms to define, Self-check questions, one after another.
- 4
Name the language of the speech
The engine reads 99+ languages; this AAC audio file is in Russian, so the language of the widget is set to Russian for the revision deck.
- 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 Telegram Bot API takes an audio file in the .MP3 or .M4A format, and the M4A carries the AAC codec. That is the part that depends on the AAC; everything after it is the work of the revision deck, and it is the same for every recording.
Tips
Send the transcript to the instruction only once.
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 flashcards for revision
Which problems can come with 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 does not change the file of the AAC audio file; it reads it as it is and writes the revision deck.
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 revision deck is written from it.
How is the revision deck built from the AAC audio file?
The engine reads the Russian speech and the instruction writes the revision deck in the sections Cards, Terms to define, Self-check questions; every line comes from the transcript 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 revision deck.
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 another recording, with the same steps and the same sections.
Lecture to flashcards for revisionThe 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.