Camera button when the screen off as Play \ Pause

[Ne_L]

It would be great to have that opportunity.

Utilities that could do it, do not work.
https://play.google.com/store/apps/details?id=com.nyh.musicbutton.free
https://play.google.com/store/apps/details?id=com.nyh.MusicControl
Maybe it is possible to do this at the system level?