The document discusses the post-production process for a horror movie trailer. It explains that post-production involves cutting footage, editing clips together, adding transitions, sound, effects, and color/lighting correction. Completing post-production digitally allows for a higher quality, faster process. To make a professional horror trailer, the author will need to carefully cut clips, add sound effects to build tension, include slow and fast pacing, and adjust lighting and colors to set the desired mood and atmosphere.