AAC audio file to flashcards for revision 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.
What the AAC stores is what the engine needs. The English speech becomes the revision deck in the sections Cards, Terms to define, Self-check questions; one file may be up to 30 minutes, and 3 files a day are free.
AAC is MPEG-4 part3 and stands in the list of the audio formats of the VLC player next to MP3
The AAC audio file goes to the service through the upload widget; the speech is English, and the revision deck comes back into the chat.
The instruction of the task asks for the revision deck and puts the answer about the AAC audio file into the sections Cards, Terms to define, Self-check questions; a claim that is not in the recording is not written.
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 revision deck is written.
In the FAQ of the FFmpeg library the M4A is written next to the codec it carries: M4A (AAC), AC3 and WMA
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.
The start and the end time of every segment, and the speakers named separately when you ask for it.
SRT and VTT with the time of every line, so the recording can carry its own subtitles.
The transcript is edited through the API and exported as Markdown for a wiki, or as DOCX for a review.
| 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 file of the AAC audio file is what the AAC keeps. 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 engine reads the English speech, and the sections Cards, Terms to define, Self-check questions come out of it.
A name that was never said in the AAC audio file stays out of the revision deck.
Set the language of the AAC audio file before you send the file.
The file of the AAC audio file stays on your own disk.
Because of software patents Audacity cannot include the FFmpeg software: the free FFmpeg library of a third party is installed separately.
Bots can currently send audio files of up to 50 MB in size, and the limit may be changed in the future.
The Telegram Bot API takes an audio file in the .MP3 or .M4A format, and the M4A carries the AAC codec. The file of the AAC audio file is the input of the engine, and the revision deck is written from it.
Because of software patents Audacity cannot include the FFmpeg software: the free FFmpeg library of a third party is installed separately. The engine reads the English speech of the AAC audio file and writes the revision deck from that text.
The engine reads the English 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.
One file of the AAC audio file may be up to 30 minutes on the free plan; the free plan gives 3 files a day.
Bring the file of the AAC audio file to your own disk and upload it here; the engine returns the revision deck with the time of every line.
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.
Reading: 4 minutesUpdated 
Transcribsi editorial team
Speakers by name, a time on every line, export to TXT, SRT, VTT, CSV and Markdown.