Encoding inputs with AAC Ambisonics FOA

Question

Hello, I would like to validate if the meciaconvert supports audio track for Ambisonic coding.  
  
I have an MP4 input for 360 video  
with one audio track First Order Ambisonics (W X Y Z).  
But I don't see an equivalente channel coding for output audio AAC.  
  
This is the input audio track mediainfo :

```
Audio 
ID : 2 
Format : AAC LC 
Format/Info : Advanced Audio Codec Low Complexity 
Codec ID : mp4a-40-2 
Duration : 6 min 52 s 
Bit rate mode : Variable 
Bit rate : 506 kb/s 
Maximum bit rate : 512 kb/s 
Channel(s) : 4 channels / 4 channels 
Channel(s)_Original : 4 channels 
Channel layout : Ambisonics (W X Y Z) / Ambisonics (W X Y Z) 
ChannelLayout_Original : C L R Cs 
Sampling rate : 48.0 kHz 
Frame rate : 46.875 FPS (1024 SPF) 
Compression mode : Lossy 
Stream size : 24.9 MiB (0%) 
Default : Yes 
Alternate group : 1 
```

Answer

Hello,  
  
MediaConvert supports multi-channel outputs as outlined in the following document. It does not support coding a channel as W X Y Z, but instead, it codes with left, right, center, etc.   
  
https://docs.aws.amazon.com/mediaconvert/latest/ug/more-about-audio-tracks-selectors.html  
  
Regards

Answer

Thank you! I conclude Media Convert may not have a specific support for Ambisonic Audio coding

Encoding inputs with AAC Ambisonics FOA

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