> Tested, can not be used jessie source for utopic. So ok, on the basis of the
> package deb-multimedia package I prepare packages for jessie and utopic for
> Trinity build-deps.

Ok. If we call the package mencoder as the original one (without the -trinity extension), then we do not need to do any change in k9copy control file. Jessie and Utopic users will use our package, while older distros can install either the original mencoder or our version (if we choose to build it for all distros as well).
Thanks for testing.
Cheers
  Michele