M4A 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.
Transcribsi reads the M4A audio file in English and writes the revision deck. 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.
The FFmpeg library of Audacity imports a much larger range of audio formats, including AC3, M4A, MP4 and WMA, so an M4A of a phone is opened with it
The M4A audio file goes to the service through the upload widget; the speech is English, and the revision deck comes back into the chat.
The ready instruction reads the transcript of the M4A audio file as the student who missed the lecture, and the revision deck comes in the sections Cards, Terms to define, Self-check questions.
The engine reads 99+ languages; the speech of this M4A audio file is in English, and the widget carries that setting for the revision deck.
A voice message of the Telegram Bot API is an .OGG file encoded with OPUS, an .MP3 file or an .M4A file
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 | 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. |
| What the file is | 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. |
| What can go wrong | 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. |
| What the platform says | In the FAQ of the FFmpeg library of Audacity the M4A is written next to the codec it carries: M4A (AAC), AC3 and WMA. |
| What the platform says | A voice message of the Telegram Bot API is an .OGG file encoded with OPUS, an .MP3 file or an .M4A file. |
| 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 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. The M4A audio file is only the input: the engine reads the English speech and writes the revision deck out of the transcript.
Send the transcript to the instruction only once.
A recording of the M4A audio file in English is read as 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.
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 revision deck.
Bots can currently send audio files of up to 50 MB in size, and the limit may be changed in the future. The file of the M4A audio file is the input of the engine, and the revision deck is written from it.
the revision deck in the sections Cards, Terms to define, Self-check questions, with the time of every line of the recording of the M4A audio file.
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.
On the M4A. The facts of the table above name the place where the file of the M4A audio file is kept and the way it comes off.
Reading: 4 minutesUpdated 
Transcribsi editorial team
Speakers by name, a time on every line, export to TXT, SRT, VTT, CSV and Markdown.