Post-production for a horror film involves three key stages: editing footage to cut out unnecessary parts and maintain viewer interest through quick cuts and multiple angles; adding appropriate music and sounds to enhance emotions and guide viewer reactions; and including opening and closing titles/credits to identify the film and acknowledge the cast and crew.

1. Post-production Investigation
What is post-production?
The final stage of the filmmaking process, normally involving
picture editing, sound design, visual effects and outputting the
film to a format suitable for release.

2. What post-production stages do you
need to create a horror film?
Editing - Take your footage to your computer - upload the photos/production you
shot, and edit it. Cut out the boring parts. Make quick cuts and hold the viewer's
interest. Editing between various angles can quickly show multiple things going on in
the same scene.
Adding music/sounds - Make sure that your music flows with what is going on during
the movie at that second. Music gives the movie an emotional stance. It changes the
audience's emotions which give them a more positive view on your film. You can vary
your music, to make the audience feel happy, sad, angry, scared, excited, etc.
depending on the outcome of the film.
Add titles/credits – The name of the film needs to be added at the beginning so that
the audience know what they’re watching. It also gives the first impression of the film,
so the typography should fit to the genre which in this case is horror. Credits at the
end of the film will acknowledge the cast and crew so the audience knows who was in
it, or helped produce it the film.