KIB105 week seven exercise

Reflection

In this week, the exercise is to extract and integrate a motion from a music file. I needed to convert audio to key frame which creates an audio amplitude layer. This layer contained the key frames responding to the audio level. And then I can copy the audio key frames and paste them at the attribute of the object which I want to animate. By doing that, the object will change with the music. However, this method can only be used on rotation and opacity because rotation and opacity only has one attribute just like music. But position and scale has two attribute which is X and Y. So I want to extract their motion from the music file I need to add expression for them. AE has a lot of expression. The one I used here is a very easy one but the expression needed to be changed a little. The expression will automatically move the centre of the object to coordinate (0, 0) which is the top little corner of the composition. So I need to change them manually. Another thing about copy and paste the key frames from the audio is the key frames copied from the audio won’t change the object’s motion very much. The max influence won’t be 100. So I need to change all of them by changing the value in their curve. I also used two masks to make the character’s top half of body to move just like the tutorial video showed. And a dog moved as a sequential layer.

Analysis

The motion of the objects is very funny. This is a piece of music with lively rhythm. This made the objects move rapidly as well. This reminds me the effect from some music player. I think they use the similar technique as well. But I was able to achieve this in my work. I will try to do something like this later. The sequence layer function is another useful tool. It could make an object move in the scene very smoothly and easy to adjust. The dog in my video moves as a sequential layer and each of them also has the same motion as the music. I was sure if I can achieve this at the first place. But I did. I was happy about this.

Understanding and Comprehension

I have learned three very important techniques this week. One is to copy the key frames from an audio resource and paste them into the rotation or opacity of another object. Another one is to type expression for an object. This could use at many other ways not only with the audio. I searched After Effect expression on Google and found a lot expression some of them have very strong ability to control the animation. Sequence layer is the third technique I learned this week. This tool could help me deal with some specifically animation very easily. I can’t wait to try these functions on my final project.