Post production involves editing films after filming, including picture editing, sound editing, music composition, visual effects, sound mixing, and color correction. This document discusses the post production process for a short film called "Redemption Dinner" including editing challenges like cutting between two shots at the same time, breaking up a long shot into segments, and coordinating the length of two shots. It also discusses using Final Cut Pro and Pro Tools for editing, color correction, adding ambient sound and an answering machine, and selecting music from an online library.