help with keyframes.

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help with keyframes.

Postby Minion » Wed Jul 12, 2006 1:04 pm

explainations i've recieved on this have been vague at best.
what exactly are keyframes, and how do i make and use keyframes in premiere 6.5?
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Postby Gepetto » Wed Jul 12, 2006 2:18 pm

I'll answer assuming you mean "effect keyframes". Because you don't "make" keyframes on your source files, and codecs do it automatically during compression.

Effect keyframes are frames of your timeline that you mark as pointers to animate an effect. For example, say you want a clip to fade into view from black while a specific part of a song is playing, and that part lasts 10 seconds. You would keyframe the first frame in the clip and set Opacity to 0%, making it completely transparent. Then you would keyframe the frame at 10 seconds (frame 240 if you're editing at 24fps) to 100% opacity so the clip is completely opaque. All the fames between 0 and 240 will automatically have their opacity regulated so that the transition from 0% to 100% occurs at a regular speed. The opacity will increase regular ammounts from frame to frame and will be completely visible from frame 240 on.

About setting keyframes: First off, I don't think Premiere 6.5 operates effect keyframes. I have Premiere Pro 1.5, which does, so I'll explain based on that. There's a little clock icon next to keyframe-supporting effects on the Effects Control window. Selecting the clock activates keyframing for that effect. Expanding the effect (clicking the little arrow next to the title) will greet you with additional options and little losangles (one per keyframable option) at the right side. Clicking the losangle turns the current frame into a keyframe and clicking it again reverts the process. If you want, every frame in a timeline can be a keyframe for the same effect, but that would kill the purpose of keyframes, which is to save you the trouble of setting parameters frame-by-frame.
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