Recommended Media Support
This document lists codecs, containers, streaming formats, and playlists, that your product should support to provide a familiar Alexa experience to your customers.
- Living Document
- Audio Codecs
- Audio Containers
- Audio Streaming Formats
- Audio Playlists
- Music Service Provider (MSP) Audio Formats
Living Document
As we learn from you and introduce compatibility with new media codecs, containers, and streaming formats, this document will be improved and updated.
Audio Codecs
Codec | Bitrate | Sample Rate | Tags |
---|---|---|---|
MP3 | 32 - 256 kbps | 44.1 kHz 48 kHz |
ID3v2 |
AAC | 32 - 256 kbps | 22.05 kHz 44.1 kHz 48 kHz |
|
WAV/PCM | N/A | 44.1 kHz 48 kHz |
|
Vorbis | VBR | 8 kHz - 192 kHz | |
Opus | 6 kbps - 510 kbps, CBR, VBR | 8 kHz - 48 kHz | |
xHE-AAC | VBR | 44.1 kHz |
Audio Containers
Container | Payload Codec |
---|---|
OGG | Vorbis |
OGG | Opus |
MP4/M4A | AAC |
MPEG-TS | MP1, MP2, MPEG4 Audio |
ADTS | AAC |
ISO-BMFF | AAC, xHE-AAC |
Audio Streaming Formats
Streaming Format | Version | Codec |
---|---|---|
SHOUTcast/Icecast | N/A | MP3, AAC |
HLS VOD | 4 | ADTS/AAC |
HLS Live - See Section 6.3.4 of the HLS Spec. | 7 | MPEG-TS, ADTS, MP3 |
MPEG DASH | N/A | ISO-BMFF/AAC, ISO-BMFF/xHE-AAC |
Audio Playlists
Playlist | Payload | DRM | Encryption | Adaptive Bitrate |
---|---|---|---|---|
HLS (VOD) | MPEG-TS, ADTS, MP3 | N | N | Y |
PLS | Supported Codecs, SHOUTcast, M3U/M3U8 | N | N/A | N/A |
M3U/M3U8 | Supported Codecs, SHOUTcast, M3U/M3U8 | N | N/A | N/A |
MPD | MPD | Widevine | CENC CTR mode | Y |
MPD | MPD | Widevine | CENC CBC mode | Y |
Music Service Provider (MSP) Audio Formats
The following audio formats are supported by Music Service Providers (MSPs).
MSP | Streaming Format | Playlist Extension | Container | Codec | Bit Rate(s) |
---|---|---|---|---|---|
Amazon Music | MPEG DASH | MPD | ISO-BMFF | SD - Opus HD - FLAC Spatial - Dolby Atmos (EAC3) Sony RA360 (MHA1) |
Opus - Up to 320 kpbs FLAC - Up to 24 bit, 192 kHz EAC3 - Up to 768 kpbs MHA1 - Up to 1600 kpbs |
Amazon Music | Progressive | N/A | MP3 | MP3 | 256 kpbs |
Audible | MPEG DASH | MPD | ISO-BMFF | AAC LC xHE-AAC Spatial - Dolby Atmos (EAC3) |
AAC LC - Up to 128 kbps xHE-AAC - Up to 128 kbps EAC3 - Up to 768 kbps |
Audible | HLSv4 | M3U8 | ADTS | AAC LC | Up to 128 kbps |
iHeartRadio | HLSv1 | M3U8, PLSv2 | N/A | AAC, AAC LC, HE-AAC | Up to 320 kbps |
SiriusXM | HLS | M3U8 | ADTS | AAC LC, HE-AAC | 256 kbps (AAC LC), 23/64/96 kbps (HE-AAC) |
Implementation of the media codecs, containers, and formats described herein may practice one or more audio and/or visual standards (e.g., MPEG-4, AVC, AAC, etc.). AVS developers, and not Amazon, are solely responsible for procuring any patent rights covering such standards on their AVS products.
Last updated: Mar 21, 2024