 To deal with this, the standard includes the concept of "profiles" and "levels", allowing a specific set of capabilities to be defined in a manner appropriate for a subset of applications.Initially, MPEG-4 was aimed primarily at low bit-rate video communications; however, its scope as a multimedia coding standard was later expanded.MPEG-4 is efficient across a variety of bit-rates ranging from a few kilobits per second to tens of megabits per second.