Does ipod shuffle support m4a?

Question

iPod

Hello.
For some reason, my iPod does not play m4a format, although in support and on the form they write that everything is ok: https://discussions.apple.com/thread/6125586?tstart=0
shuffle 4, firmware 1.0.3

Answer 1

m4a is just a container that can contain data compressed with an unsupported codec.

Answer 2

run through media human audio converter