Inbetweeing 201

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Inbetweening 201

You cant have animation without inbetweening! Animators do the key poses or storytelling poses. the inbetweener does the drawing between the animator key poes. A bad in-between will ruin the animation.  On the other hand, a great in-between can really make the animation sing! For a great description of inbetweening, you can read these animation books.

What exactly is Inbetweening?

Inbetweening is vital for production! It is the most important job of matching the style and animation of the animator’s poses and following their timing charts. For example, an animator will draw a man throwing a ball on one layer, and on the next layer, the ball hits a tree. An inbetweener will draw all the drawings between those two drawings. As you can see the inbetweener does a lot of work! You should have some knowledge of animation basics.

What about 3d animation?

Well, what about it? It’s the same thing, just a bit different! With 2d you need to draw each in-between, but with 3d the frames are already there. However you do it, you need to have a basic understanding of location and acting. How things naturally move in arcs. What kind of movement is subtle? All of these concepts are important to animation.  Some people think that 3d is easier because you don’t have to draw the ‘tween’ drawings. In that way, it is easier but you still need to understand the movement and timing.

Sophisticated animation software has complex algorithms that identify the keyframes in an image and define how the transition goes, creating the inbetweening for the tweening process and completing the animation. This is done by interpolating graphics parameters or data. On the other hand, all of this can be done manually, which is what animators often do as they need more control of the process than an automatic algorithm can afford. Some animation software that automates the inbetweening process still allows manual means of editing each inbetween frame so that the animator can be sure that the movement is fluid and lifelike or whatever demand is. To be honest, you really don’t need to worry about that, because we are focusing on 2d animation. Darn proud of it too!

Here are some things we will cover:

  • Timing charts
  • volumes
  • shapes and line
  • styles
  • animation and arcs
  • line quality




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What Will You Learn?

  • You will learn how to inbetween an animated seqence.

Course Content

Inbetweening 201 session 1 Intro to Inbetweening_even timing
we will be looking at Inbetweeing with timing. Shooting on "Ones" and "Twos" Super important!

  • Inbetweening 201 session 1 Even timing
  • Inbetweening 201 session 1 _ Even timing

Inbetweening 201 session 2 slow in and slow out
Slow In Slow Out refers to how an object needs time to accelerate and slow down as it moves. Typically, an animation looks more realistic if there are more frames at the beginning and at the end of an action to depict this increase and decrease in speed. We are going to practice this in this lesson.

Inbetweening 201 session 3. Arcs and lines
Most actions in the real world typically follow an arc or circular motion. Movement in straight lines would typically denote the unnatural, as in mechanical or robotic movements. In animation we apply the principle of arcs in order to realise a smooth and fluid movement and create a more natural looking action

Inbetweening session 4 complicated drawing
Inbetweening a complicated drawing with lots of details can be daunting! Not to fear, we will practice and do it together!

Inbetweening 201 session 5 slow in slow out with instructions
SLOW IN AND SLOW OUT Refers to the timing of an object or figure at the beginning or end of a sequence. ‘Slow In’- an action decelerates into a key frame meaning that the object will move slower. ‘Slow Out’- an action accelerates out of a key frame meaning that the object moves faster. Most actions will involve both a slow in and slow out to make the movement of the object.

Inbetweening 201 session 6 moving volumes not lines
You are on your own with this one, follow the charts!

Inbetweening 201 session 7_ Jump right up!
This chicken will stand up and has really long legs! You get to animate it, read the charts its all up to you!

Inbetweening 201 session 8 the hand thump
We have one movement but three differnt timng charts for the whole sequence. Sounds complicated but it is really simple.

Inbetweening session 9 Frog throat
You will now inbetween a frogs throat. This is how alot of limted animation is done, where the whole drawing does not need to be animated but just the parts that move.

Inbetweening 201 session 10 Inbetweening a ripple
You will be inbetweening a ripple on the surface of water. Nice!

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