Explain how special effects are used to generate audio-visual content
Morphing - The morphing used within Harry Potter and the Deathly Hallows Part 1 was used in the clip to develop the story further and make the film have more action and excitement over what these "7 Harry's" are going to do. This also adds comedy as they show Harry in female clothing which makes he audience laugh. The technique was used to change the faces of 7 people.
Rotoscoping - This technique is used within the film to add a light and glow around the previous plain stick to add action to the film as the light lets the audience know that the lightsabers are dangerous and deadly.
3D Animation - Toy Story was the first 3D animation made in 1995. This visual effect is used within Toy Story to make the characters come to live within this effect this film would be nothing. They were able to make a range of characters ranging from a cowboy to a dinosaur thanks to 3D Animation.
Matte Paintings - These are used in Star wars to add objects or people to the background of a shot to enhance the realism within the film and add more development to the story. For example in this clip matte paints are used to add a sand crawler to the background without this there would be no plot line to this scene.
Digital Composition - Within this video its clear that the digital composition used has enhanced the scenes by add effects to the sky. This technique was used in the clip to make the scene more realistic by adding the effects of the sky. In one of the clips the effect was used to make the scene foggier and duller to show that the person was standing high above ground level and in bad weather, the clip also had a blue tone making the clip darker.
Green Screen - The green screen used in Harry potter enhances the film as it puts the characters into the world of Hogwarts and magic and allows the audience to see what this world is like. The technique is used to add a background and set the scene for the location they are wanting for example when Harry comes from out of the water the scene behind him is an out of focus shot of mountains this adds to the fact he is in Hogwarts and outside.
Explain how visual effects are used to generate audio-visual content
Mechanised props - The mechanised props were used in jurassic world to make the dinosaur look more real. This also makes the scene more effective and sad as the characters are actually comforting an actually dinosaur. The mechanised prop head makes the death more personal forming a bigger hatred towards what killed it.
Scale models - The scale model of Hogwarts was used within the film to make Hogwarts more real and personal. The fact that Hogwarts was actually made would enhance the movie as the school would seem like its actually there.
Prosthetics - The prosthetics are used in Harry Potter to enhance the difference between the Goblins and the wizards. The prosthetics are used to make the goblins more scary and different, also the prosthetics let the characters give a raw reaction to the goblins look.
Stunt Props - The stunt props used in Jurassic World are used to ensure the safety of the actors and props. The stunt props make the scene more real as it actually looks like they have guns.