| 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 |