> For the complete documentation index, see [llms.txt](https://canardoux.gitbook.io/tau/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://canardoux.gitbook.io/tau/doc/pages/guides/guides-codecs.md).

# Supported Codecs

Supported codecs.

## On mobile OS

Actually, the following codecs are supported by flutter\_sound:

|             | iOS encoder | iOS decoder | Android encoder | Android decoder |
| ----------- | :---------: | :---------: | :-------------: | :-------------: |
| AAC ADTS    |      ✅      |      ✅      |      ✅ (1)      |        ✅        |
| Opus OGG    |    ✅ (\*)   |    ✅ (\*)   |        ❌        |      ✅ (1)      |
| Opus CAF    |      ✅      |      ✅      |        ❌        |    ✅ (\*) (1)   |
| MP3         |      ❌      |      ✅      |        ❌        |        ✅        |
| Vorbis OGG  |      ❌      |      ❌      |        ❌        |        ✅        |
| PCM16       |      ✅      |      ✅      |      ✅ (1)      |        ✅        |
| PCM Wave    |      ✅      |      ✅      |      ✅ (1)      |        ✅        |
| PCM AIFF    |      ❌      |      ✅      |        ❌        |      ✅ (\*)     |
| PCM CAF     |      ✅      |      ✅      |        ❌        |      ✅ (\*)     |
| FLAC        |      ✅      |      ✅      |        ❌        |        ✅        |
| AAC MP4     |      ✅      |      ✅      |      ✅ (1)      |        ✅        |
| AMR NB      |      ❌      |      ❌      |      ✅ (1)      |        ✅        |
| AMR WB      |      ❌      |      ❌      |      ✅ (1)      |        ✅        |
| PCM8        |      ❌      |      ❌      |        ❌        |        ❌        |
| PCM F32     |      ❌      |      ❌      |        ❌        |        ❌        |
| PCM WEBM    |      ❌      |      ❌      |        ❌        |        ❌        |
| Opus WEBM   |      ❌      |      ❌      |        ✅        |        ✅        |
| Vorbis WEBM |      ❌      |      ❌      |        ❌        |        ✅        |

This table will eventually be upgraded when more codecs will be added.

* ✅ (\*) : The codec is supported by Flutter Sound, but with a File Format Conversion. This has several drawbacks :
  * Needs FFmpeg. FFmpeg is not included in the LITE flavor of Flutter Sound
  * Can add some delay before Playing Back the file, or after stopping the recording. This delay can be substancial for very large records.
* ✅ (1) : needs MinSDK >=23

## On Web browsers

|             | Chrome encoder | Chrome decoder | Firefox encoder | Firefox decoder | Webkit encoder (safari) | Webkit decoder   (Safari) |                    |
| ----------- | :------------: | :------------: | :-------------: | :-------------: | :---------------------: | :-----------------------: | ------------------ |
| AAC ADTS    |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ✅             |                    |
| Opus OGG    |        ❌       |        ✅       |        ✅        |        ✅        |            ❌            |             ❌             |                    |
| Opus CAF    |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ✅             |                    |
| MP3         |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ✅             |                    |
| Vorbis OGG  |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ❌             |                    |
| PCM16       |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ❌             | (must be verified) |
| PCM Wave    |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ❌             |                    |
| PCM AIFF    |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ❌             |                    |
| PCM CAF     |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ✅             |                    |
| FLAC        |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ✅             |                    |
| AAC MP4     |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ✅             |                    |
| AMR NB      |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ❌             |                    |
| AMR WB      |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ❌             |                    |
| PCM8        |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ❌             |                    |
| PCM F32     |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ❌             |                    |
| PCM WEBM    |        ❌       |        ❌       |        ❌        |        ❌        |            ❌            |             ❌             |                    |
| Opus WEBM   |        ✅       |        ✅       |        ✅        |        ✅        |            ❌            |             ❌             |                    |
| Vorbis WEBM |        ❌       |        ✅       |        ❌        |        ✅        |            ❌            |             ❌             |                    |

* Webkit is bull shit : you cannot record anything with Safari, or even Firefox/Chrome on iOS.
* Opus WEBM is a great Codec. It works on everything (mobile and Web Browsers), except Apple
* Edge is same as Chrome