What Are The Audio-format Encoders That Android And Ios Have In Common?

Furthermore, the recordings must be shared across devices (probably stored/processed on server). Besides the formats in common, I'd like your recommendations for the right bitrate/

Solution 1:

You can find the list of supported media techonlogies on iOS in the documentation. But it seems as if there isn't so much overlap, so you might want to go ahead and use an encoder like the open speex codec which is optimized for VoIP applications.

Solution 2:

You can find the answer in my another post with snippet MPEG_4 format and AAC encoder audio format for iOS and Android