Taken in the literal (and original) definiton, "remastering" is a process where video and audio is edited to (in theory) look newer, brighter, cleaner, etc. and put on new Master Recordings, likely of the digital kind in the post-90's world. It initially started with music in the move to CD Audio, and lately is more associated with aged movies. Literal definition aside, though, Remastering is associated with the process of making an old product look more modern, or at least like it's in mint condition. The usual process of a remastering includes suchs things as; Examples of Remaster include: