2012年11月3日星期六

Modify Shapes in After Effects

Modify Shapes in After Effects

Modify Shapes in After Effects
Working with Masks Using the Rectangle and Ellipse tools The Rectangle tool, as the name ... You create mask shapes with these tools by dragging them in the ...
01 Open After Effects and create a new composition (Cmd/Ctrl+N). Choose any settings you're comfortable with – I've used HDTV 1080 25 with a duration of 4 seconds. Next select the Pen tool and draw out a shape. In this case I opted for some typography. Alternatively you can import shapes from Illustrator, or take the easy route and just use the Text tool.
02 Once you've finished drawing your shapes or typography, make them into a 3D layer by clicking the empty boxes underneath the Cube icon to enable 3D. Now bring up the composition settings (Cmd/Ctrl+k). Under the Advanced tab you'll see a drop-down menu. Change the renderer from Classic 3D to Ray-traced 3D. Click the Options button to bring up the quality settings. This is where render times can really stack up. I'd recommend working with low quality settings (Ray-tracing Quality: 4, Anti-aliasing Filter: Box) but changing them for higher settings when it comes to your final render.
03 Now go back to your composition. Under your shape layers settings you will notice a new heading called Geometry Options – it's here that we can extrude shapes. Click Extrusion Depth and set it to around 200.
04 If you look at your shape's extrusion, you'll notice it just looks like a black solid without much definition. That's because we need to add a light into the scene. To do this, go to Layer>New>Light. Remember though, more lights mean longer render times. In the Light Settings panel, choose your settings from the various options – I've gone for a Spot light type. Make sure you check the Cast Shadows tick box too, otherwise your shapes won't have any shadow. You can alter the Shadow Diffusion value to change the sharpness of the shadows.
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2012年10月30日星期二

Understanding compositions after effects

Understanding compositions after effects
Each composition has its own settings for resolution, duration, etc. These are independent of the main project and other compositions. You define these settings when you create a new composition, and you can also change them at any time by selecting Composition > Composition Settings from the main menu (shortcut Crtl/Cmd+K).
For most compositions one of the presets will be suitable but you can customize settings as you like.
Note: See composition duration for a couple of tips on setting the duration.
The Advanced tab includes a few advanced options as pictured below. In most cases you can ignore these.
It is usually best to make the composition settings the same as the footage, e.g. Don't change the frame rate unless you really need to. Fortunately, After Effects provides an easy way to create new compositions from footage using the correct settings. Simply drag the footage from the project panel to the Create New Composition icon as pictured below. Bingo — a new composition with exactly the same settings as the footage.
Note: If you click the Create New Composition icon instead of dragging a file onto it, a new empty composition is created.
The next step of the workflow is to create a composition, in which you will create all animation, layering, and effects. An After Effects composition has both spatial dimensions and a temporal dimension, called a duration, or length in time.
Compositions include one or more layers, arranged in the Composition panel and in the Timeline panel. Any item that you add to a composition—such as a still image, moving-image file, audio file, light layers, camera layers, or even another composition—becomes a new layer. Simple projects may include only one composition, whereas elaborate projects may include several compositions to organize large amounts of footage or intricate effects sequences.
To create a composition, you'll drag the footage items into the Timeline panel, and After Effects will create layers for them. Follow these steps:
In the Project panel, Ctrl-click (Windows) or Command-click (Mac OS) to select the bgwtext composition as well as the DJ, gc_adobe_dj, kaleidoscope_waveforms, and pulsating_radial_waves footage items.
Drag the selected footage items into the Timeline panel. The New Composition from Selection dialog box appears
After Effects bases the size of the new composition on the selected footage. In this example, all of the footage is sized identically, so you can accept the default settings.
Click OK to create the new composition. The footage items appear as layers in the Timeline panel, and After Effects displays the composition, named bgwtext 2, in the Composition panel.
Click in the Timeline panel to make it active, and then press F2 to deselect all layers.
When you add a footage item to a composition, the footage becomes the source for a new layer. A composition can have any number of layers, and you also can include a composition as a layer in another composition, which is called nesting.
About Layers
Layers are the components you use to build a composition. Any item that you add to a composition—such as a still image, moving-image file, audio file, light layers, camera layers, or even another composition—becomes a new layer. Without layers, a composition consists of only an empty frame.
Using layers, you can work with specific footage items in a composition without affecting any other footage. For example, you can move, rotate, and draw masks for one layer without disturbing any other layers in the composition, or you can use the same footage in more than one layer and use it differently in each instance. In general, the layer order in the Timeline panel corresponds to the stacking order in the Composition panel.
This composition contains five footage items and therefore five layers in the Timeline panel. Depending on the order in which the elements were selected when you imported them, your layer stack may differ from the one shown in this example. The layers need to be in a specific order as you add effects and animations, however, so you'll rearrange them now.
Drag bgwtext to the bottom of the layer stack (if it isn't already there). Drag the other four layers 
NOTE
You may need to click a blank area of the Timeline panel or press F2 to deselect layers before you can select an individual layer.
From this point forward in the workflow, you should be thinking about layers, not footage items. You'll change the column title accordingly.
Click the Source Name column title in the Timeline panel to change it to Layer Name, as shown in Figure 6.
Choose File > Save to save your project so far.
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2012年10月24日星期三

How to combine compositions in After Effects

How to combine compositions in After Effects

How to combine compositions in After Effects
Each composition has its own settings for resolution, duration, etc. These are independent of the main project and other compositions. You define these settings when you create a new composition, and you can also change them at any time by selecting Composition > Composition Settings from the main menu (shortcut Crtl/Cmd+K).
For most compositions one of the presets will be suitable but you can customize settings as you like.
Note: See composition duration for a couple of tips on setting the duration.
The Advanced tab includes a few advanced options as pictured below. In most cases you can ignore these.
It is usually best to make the composition settings the same as the footage, e.g. Don't change the frame rate unless you really need to. Fortunately, After Effects provides an easy way to create new compositions from footage using the correct settings. Simply drag the footage from the project panel to the Create New Composition icon as pictured below. Bingo — a new composition with exactly the same settings as the footage.
Note: If you click the Create New Composition icon instead of dragging a file onto it, a new empty composition is created.
The next step of the workflow is to create a composition, in which you will create all animation, layering, and effects. An After Effects composition has both spatial dimensions and a temporal dimension, called a duration, or length in time.
Compositions include one or more layers, arranged in the Composition panel and in the Timeline panel. Any item that you add to a composition—such as a still image, moving-image file, audio file, light layers, camera layers, or even another composition—becomes a new layer. Simple projects may include only one composition, whereas elaborate projects may include several compositions to organize large amounts of footage or intricate effects sequences.
To create a composition, you'll drag the footage items into the Timeline panel, and After Effects will create layers for them. Follow these steps:
In the Project panel, Ctrl-click (Windows) or Command-click (Mac OS) to select the bgwtext composition as well as the DJ, gc_adobe_dj, kaleidoscope_waveforms, and pulsating_radial_waves footage items.
Drag the selected footage items into the Timeline panel. The New Composition from Selection dialog box appears
After Effects bases the size of the new composition on the selected footage. In this example, all of the footage is sized identically, so you can accept the default settings.
Click OK to create the new composition. The footage items appear as layers in the Timeline panel, and After Effects displays the composition, named bgwtext 2, in the Composition panel.
Click in the Timeline panel to make it active, and then press F2 to deselect all layers.
When you add a footage item to a composition, the footage becomes the source for a new layer. A composition can have any number of layers, and you also can include a composition as a layer in another composition, which is called nesting.
About Layers
Layers are the components you use to build a composition. Any item that you add to a composition—such as a still image, moving-image file, audio file, light layers, camera layers, or even another composition—becomes a new layer. Without layers, a composition consists of only an empty frame.
Using layers, you can work with specific footage items in a composition without affecting any other footage. For example, you can move, rotate, and draw masks for one layer without disturbing any other layers in the composition, or you can use the same footage in more than one layer and use it differently in each instance. In general, the layer order in the Timeline panel corresponds to the stacking order in the Composition panel.
This composition contains five footage items and therefore five layers in the Timeline panel. Depending on the order in which the elements were selected when you imported them, your layer stack may differ from the one shown in this example. The layers need to be in a specific order as you add effects and animations, however, so you'll rearrange them now.
Drag bgwtext to the bottom of the layer stack (if it isn't already there). Drag the other four layers 
NOTE
You may need to click a blank area of the Timeline panel or press F2 to deselect layers before you can select an individual layer.
From this point forward in the workflow, you should be thinking about layers, not footage items. You'll change the column title accordingly.
Click the Source Name column title in the Timeline panel to change it to Layer Name, as shown in Figure 6.
Choose File > Save to save your project so far.
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use After Effects to slow down the action Canon T2i 60 fps Slow Motion

use After Effects to slow down the action Canon T2i 60 fps Slow Motion

use After Effects to slow down the action Canon T2i 60 fps Slow Motion
To get the "super slow motion", after I filmed at 60fps, I through it into the program "After Effects". I used an effect that comes with the program called "Time Warp". This allowed me to make the 60fps, to 1000fps. The way this works is the computer processes/adds frames in between the frames that are already in existence. It took several days for the computer to process the clips into the super slow motion that appears as well, so it does take a lot out of the computer, as far as processing goes. Another similar program that does something similar to this slow motion effect, is a program called "Twixtor". It's another great program that is very similar, however you have to buy it as a separate plugin, and it is a little expensive, but if you do a lot of slow motion, it's totally worth it :)
The concept and the acting was cheesy and silly, but creating this video was 100% pure fun.
I decided to shoot the whole sequence in a 720P 60 fps mode, with the intent of slowing some parts down for true slow motion in the 24 fps edit line. I was a little concerned about the lack of sharpness compared to 1080p, but GH2 holds up very well — much better than T2i.
I inserted "Bill + Kathy" (dropzone and the airplane owners) at 00:13 in After Effects, for a little gag the locals might appreciate. Motion tracking with Mocha worked well, as usual. Photoshopped decal slipped a little during tracking, but you really had to look frame by frame.
I forgot about the 180 shuttle rule at 00:46, shooting it in 1/50 by accident instead of 1/125, resulting in undesirable motion artifact for some indoor shots. Freefall footage, however, shot in 1/200 shuttle speed, looked pretty good in slow motion, with the footage conformed from 60 to 24 fps.
For color grading, Magic Bullet Mojo was used for ground footage. It turned out a little dark, so lightened it a little using Colorista. For skydiving footage, Colorista was used, bringing up the shadows and giving a slight greenish tint. I added a little yellow to the midrange and a bit of red to lightend hilights.
As I use the GH2 more, I really could use for shallow DOF. I need to get a faster lens. For technical aspect of achieving slow motion
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