I've got the Meizu MX4 :) and 15.04 OS-Build 107 (armhf 20150908-020305). The media player is no longer available in the Ubuntu Store, before with 15.04 rc3 it worked....
Any ideas why?
Thanks
Solved:
media player is installed but does not appear under Applications
When you download a video (e.g. .3gp) it is saved in the video directory
to start from there does not work
just copied it to the archive "com.ubuntu.camera" within the video archive
it appears now in the galery and you can open it with the media player
as media player does not appear in the application overview I just sticked it to the side bar;)