The Film Industry: Production, Distribution, Marketing, Exhibition.

So production (which is chronologically first in this sequence) falls into three separate categories, pre production, production and post production. Pre production entails the writing of the script, calling the actors making props and basically everything that has to happen before the actual shooting can take place. I was going to say that this is probably the most important part, but without any of these you wouldn't have a film so screw that.
The actual production is just the filming part. A lot of shots taken won't be used in the final film, because the editing team (coming soon) has to keep the film down to a certain length. This is what directors cuts are, the full version of the film, and some films release them on dvd.
Post production is all of the editing that happens to make the film screen-ready. It can be the most time consuming part, as editors have to watch hours upon hours of footage to choose the perfect shots, and then add any special effects if they are needed.

The next step is the distribution, once you have a film that you are happy with, you need to find someone who is willing to put it out there under there name. These are companies like Disney, Sony, Paramount and Universal. Some companies, like Disney pay people working under them to make films, so the distribution isn't a problem as as soon as it is finished it will be distributed, although it can take a lot of work for independent film makers to get out there.

The penultimate step in the film making business is marketing, which is basically advertising. You can do this through media such as trailers or adverts, and get them plastered on billboards and the sides of buses. It can be promoted through merchandise, for example a disney or super hero film could have a lot of toys, and also character interviews to get the cast out there. Advertising is important because, without it, nobody apart from hardcore fanatics would be able to find out about new films and it would probably be a tiny industry.

Audiences can get to see the films in a home cinema, the cinema or either at home on DVD's. There are different ways in which we engage in films today for instance; sex appeal (example, Megan fox or Channing Tatum), famous singers (Rihanna in battlefield) etc. 

The Film Value Chain

the film value chain is when businesses receive raw materials as input, and add a value to the raw materials through various processes, and sell finished products to customers.