The screenplay can be changed by the directors. No one knows about the script modifications except the writer and director. The writer may have written precise dialogue, but during filming, an actor may add a lip at the director's suggestion. These kinds of adjustments happen all the time on stage. And they can also happen in movies.
Some writers like to think that their work is so original that could never be similar to anything else. But most writers find some similarities between their works and other books or films. It's just a matter of looking at it correctly. Sometimes these connections are obvious, such as when you read a book or see a film and can say without a doubt that it was written by someone who has written several novels or made before. Other times they may not be so clear, such as when you read a novel or watch a movie and can't identify exactly who was responsible. In any case, it's normal for writers to feel proud of their work but also worried that others will notice these similarities.
As I mentioned, no one except the writer and director know what changes were made to the script. So even if you think there's another story out there with more significance than what's shown in the film, this might not be the case. A lot of things can happen during the production process that can affect the final version of the script.
Lines from a text or screenplay cannot be changed by directors. Actors must interpret their characters in the way that the creator of the book intended. Directors are given artistic leeway to interpret a tale in whatever way they see fit. The identical environment portrayed in a novel or script must be used by the filmmaker. This ensures that audiences across the world will experience the story with the same results.
A director can alter any line in a play or movie. This allows for significant changes in interpretation without completely rewriting a scene.
The only times when an actor would not be able to change a line is if it was written with specific words chosen by the author to indicate exactly how he or she wanted the character to sound or act. In cases like this, an actor could possibly read the line one way but not another and still stay within the parameters of the script's intent. However, if the actor were to switch out certain words in the line to make it mean something different than what the writer intended, this would be considered a rewrite and likely not accepted by a studio or production company.
As long as an actor is given freedom to interpret his or her role, there will be no problem changing any line.
If required, the director might revise the screenplay in order to carry out the concept. They normally work with the writer, although they can make modifications to the shooting script to address character development and subject as they see fit. On television, the writer has a greater influence on this process. Here's an example of a shooting script in StudioBinder.
Yes. But it depends on several factors such as how long you've had it published, how much effort you put into marketing it, etc. The more effort you put into it, the more likely you are to sell it. You can't just go online and claim your screenplay. You need to register its copyright with the US Copyright Office. After you've done this, no one can legally reproduce or distribute your work without your permission.
The first thing you should do is write a great script. It doesn't have to be perfect yet, but you should have an idea of what needs to be there for you to continue writing it. If you don't, then why would anyone else want to help you finish it? Also consider what type of film you would like to write. This will help you decide what skills you need to develop. For example, if you're looking to write a comedy, then you'll need to develop your comedic writing skills.
Nope. In TV and movies, if you leave a word or more out, the script supervisor will stop by after the take to remind you of the right line. If you believe that a modification to what has been written is necessary, you can discuss it with the director, who will most likely debate it with one or more writers/producers. But as far as I know, none of them have been known to change something major without talking with someone first.
That being said, there are always going to be changes made during the editing process. Sometimes those changes are minor (like when a editor adds or removes a scene), other times they're very significant (like when an actor decides not to include their own line in a scene). And sometimes those changes are made after the fact (like when a director adds or removes a shot from a movie they didn't direct). But regardless of how or why they make them, all editors work within the parameters of what has been written before them.
As for writers/producers changing things on set, only they can say if that's something that happens regularly. I would assume not, but you never know.
As for me, all I can do is write what's been given to me and not worry about what might happen next week when someone else edits this thing.