Wednesday, 22 January 2014

Formal Elements of Motion Graphics

Doctor Who - 50 years teaser trailer


2D elements - Multiple promotional images took during production of various eras of the show.
These elements were then put on the X, Y and Z axis and added into a montage of various characters from the shows current production and history moving onto then leaving the screen as the camera slowly zooms past.

3D elements - The advert finishes with the inclusion of 3D elements (i.e The sonic screwdriver, Matt Smith and the text at the end) In some cases 3D elements are blended with 2D elements by transitions so subtle they are almost unnoticeable (0.23) they were again on the X and Y axis but also the Z as the Tom Baker GCI model revolves as the camera pans by.

Alpha Channels - Information about colour in After Effects is stored within three channels: red, green and blue. An image can include an invisible fourth channel too, this is known as an alpha channel and it contains information on transparency. Sometimes, such an image is referred to as an RGBA image, indicating that it also has an alpha channel as well as the ordinary channels. An image with no alpha channel is simply called a RGB image. 

Mattes - When you look at an alpha channel in the composition panel of After Effects; white indicates complete opacity, black is complete transparecy and grey is a little transparency. Mattes would have been used for everything you see in this advertisement except in the background (that being completely CGI and/or stock footage) as Matt Smith would have been acting against a greenscreen and everything else was either images (the original background would be white on an alpha channel)

Keyframes - Within animation, keyframes are used to pin-point every single little bit of movement an object makes. The less keyframes, the less organised the movement is. However the more keyframes a composition has then the smoother the animation will be. Due to the sheer amount of animation in this advert, keyframes had to be used for every image featured. It is likely that the software used tracked the movements of the fake camera and generated keyframes to correspond with them.

Composite Modes - In the Modify menu there are many options that allow you to combine two (or more) images, this is what is known as a composite mode. 

Layers - Elements that make up a composition, any image, video or audio element in a composition is called a Layer. 

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