Editing

Speed of editing helps to establish the pace of the film and the speed in which the action moves in. Determines the mood for example a action scene will have short second frames frequently changing the scene whereas to create a relaxed mood there will be less frequent scene changes letting the scenes last longer. There are many styles of editing these are:
A straight cut,
A fade out where the screen fades to black representing time passing,
A dissolve where one image is slowly brought underneath another,
A wipe cut where one part of the screen moves across to the other,
and a jump cut where the audience attention is brought into focus on something very suddenly.

Soviet Montage- Lev Kuleshov

Lev Kuleshov was among the very first to theorize about relatively young medium of the cinema in the 1920s. He argues that editing a film is like constructing a building, brick by brick (shot by shot) the building (scene) is constructed.

Around 1918 Russian director Lev Kuleshov did an experiment that proves this point. He took an old film clip of a head shot of a noted Russian actor and inter-cut the shot with different images to convey different meanings, therefore making logical links.