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In this course, author Ashley Kennedy demonstrates basic and intermediate video editing techniques in Avid Media Composer. The course explains how to build sequences, mix audio, apply effects, and color-correct footage. The course also shows how to create titles, manage and output media, capture and import footage, and troubleshoot common post-production issues.
As you remember from audio rubberbanding, keyframes represent places within the sequence where an audio change takes place, and Media Composer automatically interpolates that change between the two keyframes. We also use keyframes in visual effects and this time they represent points of visual change. Let's take a look. Okay, so let's come to our first dance shot. And we have kind of an extreme long shot right here, and what I would like to do is start out at this length but then zoom in a little bit before we cut to the next shot, which is a medium shot.
So we just want to come over to our Effect palette, and we are going to go to the Image category, and I am going to grab a Resize and just drag it right on this effect. Now notice that nothing happened to my image. Media Composer is not going to guess how much you would like to resize your shot. You need to be the one to tell it how much you are going to resize. So we just come over to the Effect Editor, and we see here under Scaling that we have both X and Y Values.
So if I wanted to just uniformly resize this shot, I would want to click Fixed Aspect because we want both our X and Y values to increase at the same rate, and I could drag this to the right, and you can see it zoom in. Now that isn't what I want to do, so I am going to return this back to a hundred really quick, by just clicking on one of my sliders and typing in 100 right on my numeric keypad. And I will press Enter, and we were back to where we started.
All right, so what we do want to do is to start off zoomed out and then about midway, we want to slowly zoom in and then stay zoomed in for the duration. Okay, so we need several points of change. These are represented by keyframes, which is the button right here. So I'm going to add a keyframe at the very beginning, and you can see it right there, and we will go ahead and add another one where we would like the zoom-in to stop. So, I will click there, and we want it to stay zoomed in until about right here, about three quarters of the way through, so I will make another keyframe, and we need an end keyframe as well.
Okay, so we don't need to change anything about the first keyframe, because we would like to maintain this size. If I click on the second keyframe though, I can come back to my Effect Editor and then perform the zoom-in. Now, I'm working with HD footage, so I have a lot of room to play with. I can get up to about 250% without there being much pixelation, but with the footage that you have, it's going to be down-res quite a bit. So, if you put in the same values that I do, you will probably notice a lot more pixelation.
So, let's go ahead and just zoom in until we like the size. And I can also reposition. You see here I have X and Y parameters, And if we would like this to stay at this rate from keyframe 2 to keyframe 3, I could just log all of those numbers, come down here, and put them back in, but that's kind of a pain. So instead, I am going to just copy the keyframe parameters from keyframe 2 to keyframe 3, and to do that, I am just going to press Ctrl+C or Command+C on a Mac and I am just going to click on my third keyframe and press Ctrl+V or Command+V on a Mac.
Now, I am zooming in and staying zoomed in from 2 to 3. Let's go ahead and play through my Effect Preview monitor to see how it looks. (clip playing) Okay, and then it zooms back out at the end. You know, I actually don't want it to do that at all; I want it to maintain this size throughout the duration. So we are going to need to make a few adjustments. So, what I am going to do is actually just delete this last keyframe because we don't want it to go back out to this value.
I am just going to click on the keyframe and press Delete and it's gone, and then I'm just going to Alt+Drag or Option+Drag on a Mac so that I can just drag my keyframe down to the end. Now another way to do this is to use your M, comma, period, and backslash keys. If you click on a keyframe and then press one of those keys, I am moving one field to the left; If I press comma, one field to the right; if I press period, ten fields to the left, if I press M; and ten fields to the right if I press the backslash key.
So, I'm going to go back to the end, and we have our three keyframes. Again, we started zoomed out, we zoom in, and we stay zoomed in, and let's make sure that looks good with the medium shot that follows. I'm going to go ahead and just click up here in my ruler in my timeline, and we will play through. (clip playing) Okay, looks good. As you can see, applying keyframes to animate changes in time allows you to become even more in tune with your sequence.
In a sense, this allows you to add another eye to the editing process because of the added things you can do.
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