Editing a Transition

To create your own custom-made transition, you need to open the editor and then scrub through the Timeline deciding where and when to alter the various parameters. Experimenting is the only way to find out what each setting can do.

To edit a transition

1.	Open the Transition Editor by doing one of the following: Double-click the transition. Right-click and select Edit to open the Edit interface.
2.	Open the parameter you wish to alter by clicking once on the small triangle to the left of the name (Figure 8.37). Figure 8.37. Click this triangle to open the parameter settings.
3.	You can alter this parameter in one of the following ways: Place the mouse cursor over any of the parameter boxes and a double-headed cursor appears (Figure 8.38). Hold down the mouse button and drag to the right to increase the value displayed. Drag back to the left to reduce the value displayed. Figure 8.38. Use the mouse to alter the parameter… Double-click inside the display area, enter the numerical value required (Figure 8.39), and press Enter. Figure 8.39. …enter the numerical value directly… Click inside the parameter curve area on the line color that represents the parameter you wish to alter (Figure 8.40). Figure 8.40. …or use the parameter curve interface to dynamically add and alter keyframes. Parameter lines and boxes always match up with coloring, but the line only appears if the parameter box is open, or if the parameter was previously adjusted.

Tips

• After altering a parameter, you can play this clip inside the editor to see how your keyframes affect the final image. If it's a Classic transition, you can only scrub through the image. To play a Classic transition, you must first exit the editor and allow the transition to render.

• Undo and redo are fully supported when you're editing keyframes.

Applying a Parameter

If you need to apply any parameter to the whole length of a transitionfor example, if you are using Mirror to flip an imagethen drag the Keyframe symbol from the parameter's label area into the preview screen of the editor. Those settings in the parameter box then apply to the whole transition (Figure 8.41).

Figure 8.41. Apply a parameter setting to the whole length of the transition.

If you just want to apply these parameter settings to one specific keyframe that already exists on the Timeline, then drag the Keyframe symbol from the parameters label area onto that keyframe (Figure 8.42).

Figure 8.42. Apply a parameter setting to an individual keyframe.