Case Study/ Elements and motion garphics

Alpha Channels

An alpha channel is a type of mask. The mask is called a Channel Mask, which changes the transparency of the edit.

Alpha channels define a selection in black, white, and varying shades of gray pixels. In other words, alpha channels store selections as 8-bit gray scale images.

You can create a mask by duplicating a color channel and then editing the channel by using painting and editing tools and filters

.Key Frames

A key frame is a single still image in a sequence that happens at an important point in that sequence; key frames are put throughout a sequence to create points of motion. One example of key frames could be an animation of a person walking, having key frames each time the legs move.

This shows The bug legs walking towards the ant (0.10)

https://www.youtube.com/watch?v=lC_Xsd2ekkw 

Key frames using buzz's arms to pint out the other toys (0.09)

https://www.youtube.com/watch?v=cMYMn1BZX0o

The key frames are showing the food being crushed (1.04)

https://www.youtube.com/watch?v=nJG-AnqntNI

3D Layers

3D text this is used to show the writing is flying all over the place 
https://www.youtube.com/watch?v=1f5ykkGJvMU


This is a 3D animation to give depth to 3D image 
https://www.youtube.com/watch?v=agJdGAPQGtE

3D Compositions are used in this so the animations look like there in the distance 
https://www.youtube.com/watch?v=2hYGl8mw3zg

Creating the illusion of depth in an image. Depth is where you have the X, Y & Z axis in after effects. It appears when you press the cube.

Layers

All compositions have layers so they can be edited easily.

There are different types of layers in a composition, which include, Video and audio layers that are based on footage items that you import, such as still images, movies, and audio tracks. These can be then broken down and edited easily singularly. You can create layers for cameras, adjustment layers, null objects and lights. Synthetic layers hold text, shape and other visual layers. Also pre composition layers use compositions as their source footage items.

A Layer that is used in this background in the intro when th camera goe throughout the simposn font looking like there are three still images and you look into the centre

https://www.youtube.com/watch?v=DX1iplQQJTo

If you look also the power plant looks like the main layer because it look above all the other layers in the intro.

https://www.youtube.com/watch?v=DX1iplQQJTo


If you look at the two kids the statue they have placed the layer right so it look like the kids are on top of the statue  

https://www.youtube.com/watch?v=DX1iplQQJTo

2D Elements

A 2D element is a 3 or 4 sided shape that can be displayed on an X and Y axis. There are three types of 2D elements: shell, solid and plate.

A shell is a linear one-dimensional element that has constant values on the X and Y axis. A 2D solid is a two-dimensional element that is either quadrilateral or triangular, much as a shell element would be in a 3D model.

A 2D plate is a two-dimensional element that represents a solid on the X and Y axis.

Also, a 2D plate can be used as a template in drawing and design.

Mattes

A matte is where you use a mask to blank out part of an image so that you can replace that image with another.