Copyright

What is copyright?
When a person creates an original work, that he or she automatically owns copyright to the work. Copyright ownership gives the owner the exclusive right to use the work in certain, specific ways. Many types of works are eligible for copyright protection, including:

1. Audiovisual works, such as TV shows, movies, and online videos
2. Sound recordings and musical compositions
3. Written works, such as lectures, articles, books, and musical compositions
4. Visual works, such as paintings, posters, and advertisements
5. Video games and computer software
6. Dramatic works, such as plays and musicals 

Ideas, facts, and processes are not subject to copyright. In order to be eligible for copyright protection, a work must be both creative and fixed in a tangible medium. Names and titles are not, by themselves, subject to copyright protection.

Is it possible to use a copyright-protected work without infringing?

In some circumstances, it is possible to use a copyright-protected work without infringing the owner’s copyright. For more about this, you may wish to learn about fair use. It is important to note that your video can still be affected by a claim of copyright infringement, even if you have...

1. Given credit to the copyright owner
2. Refrained from monetising the infringing video
3. Noticed similar videos that appear on YouTube
4. Purchased the content on iTunes, a CD, or DVD
5. Recorded the content yourself from TV, a movie theatre, or the radio
6. Stated that “no copyright infringement is intended”

Some content creators choose to make their work available for reuse with certain requirements. For more about this, you may wish to learn about the Creative Commons license.

(Here is an article from youtube about copyright, I'm bringing the topic up because in my short film I plan to use parts of a song that I didn't create called '1000 Years Always By Your Side' by the Korean group SHINee. Because I'm chopping it up and reassembling it, it isn't exactly the original copy. And because I'm not planning to use it to make money and through being a student I can use this. Due to this song being foreign the likelyhood of me actually getting in contact with the company to ask permission to use their song is very slim.)

http://copyrightfriendly.wikispaces.com/
(Another link about copyright)