Which audio codec does Spotify use for mobile streaming?

[Greg_J]

Hello!

I would like to know which audio codec Spotify streams in on the Android mobile app. I've seen various articles that say it's Ogg Vorbis and other articles that say it's AAC, so I'm a little confused. The reason I want to know is because I just bought a pair of wireless headphones which I later learned don't support AAC.

Thanks in advance.
Greg

[Vinod007]

As per my knowledge, for Android app they are using OGG. For Desktop app. Not sure whether they changed it or not. 

[vaajy]

OGG in Android and Windows, as well on iDevices. Web App is AAC.