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KristiJay

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Hello I need help in using keyframes. When you put the duration of an effect on a specific part of a video, do you put the duration on the EFFECT or the MASK, or both?? So far, I got how to put the effect on a certain part of a video, but the effect moves when I preview the video. Thanks. 

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Hi

" Hello I need help in using keyframes. "

In general terms... An effect can be added to a single clip and you have the possibility to then create  Keyframes to control the effect such as its duration, strength and in some cases its movement.

You should be able to use this simple example to see how keyframes work. It makes a clip fade-out and Fade-in several times. The principle can be applied to nearly all the effects.

  1. Place a clip on the timeline.
  2. Click the FX box at left end of the clip. This will open the Effects window.mZIJZ.jpg
  3. Click the Green Plus on the effects window toolbar. This will now open the list of effects available in your VP version.mZoLn.jpg
  4. Select the Effect marked Transparency. This will open the control panel for this effect. If the white keyframe panel on the right is not visible click the small black arrow on the effects window toolbar to extend it.mZWDc.jpg
  5. The red cursor line on this panel represents the "play" position of the clip and will generally be at the start.The slider value shows the % opacity of the clip at the cursor line position. (The default value is 50%) The width of the keyframe panel represents the duration of the clip and below it are the time values.
  6. In this example we want to start with the clip visible..... 100% Opaque. So slide the marker to the right.mZCSG.jpg
  7. The value now shows 100% and both he timeline thumbnail and the Clip View become visible.
  8. Create a keyframe to fix this value at the cursor line position by clicking the small green cross with the black and red lines. It's the 12th tab on the effects pane toolbar.   mZQfP.jpg
  9. This draws in an effect level  line - in this case 100% and places a blue marker on that line. This is a keyframe position.
  10. Now slide the cursor line along to a later point in the clip where you want the clip to start fading and click the green cross again. This sets a second keyframe marker. As you can see it will still be 100% opaque.mZT9j.jpg
  11. Now move the cursor line along to where you wish the fade out to finish. Your blue keyframe marker will remain where you put it.
  12. Adjust the effect slider to show the % fade level required at the new cursor position....say total fade-out (0% opacity)mZeml.jpg
  13. VP will now create a new keyframe and marker at the cursor line position at the 0% opacity.(100% transparent)  The duration of the effect is simply the time between keyframe 2 and keyframe 3.
  14. Slide the cursor along to a new position and adjust the opacity back to 100% with the effect slider. You will have created another keyframe. The line will now show (in this example) a fade-out and a fade-in.mZFJf.jpg
  15. You can repeat this process to have more of the same.........mZXL9.jpg
  16. Each keyframe will have the value set in the slider box. When you play the clipin this example the clip will fade out after a short delay and then fade back in. Fade out to about 50% and back again. Fade out completely and back again.
  17. The blue keyframe markers can all be adjusted to new positions by grabbing with the mouse and moving them.
  18. New keyframes can be easily created by simply clicking on the blue line between existing markers and dragging them about. The line is in effect WYSIWYG.

This is a very simple demo to get you going but you should now be able to use keyframes for nearly all the effects in VP. (Some dont require them ) You will need to experiment. You can apply multiple effects to a clip...smooth the curves,... create and save new effect templates  etc There is much more to discover in this respect.

You mention MASK This is a different sort of effect and can be animated using keyframes in a similar way to the example quoted. It is a way of "cutting" a clip into complicated shapes but requires a further effects added to the clip  to make the masked visible.

Anyway I hope this is of use.

Nat

 

 

 

 

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