: The audio codec and channel configuration. AAC (Advanced Audio Coding) is the compression standard, and 2.0 indicates two-channel stereo sound.
Each part of the name provides technical specifications about the video quality and encoding: MMV.2019.1080p.AAC2.0.H.264
: The video compression standard (also known as AVC), which is widely used for high-quality video playback on most devices. : The audio codec and channel configuration