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If there are many effects in one location, especially multiple effects stacked within a composite, it's possible you may need to render portions of your sequence. Rendering effects simply means that you're creating or rendering video files of the effect's result. In this movie, we'll take a look at when and how to render effects so that you can play back any amount of video streams. There are a couple of times you need to render. Whenever you have blue dot effects in your Timeline, you will need to render those, because they indicate that Avid is not playing that back in real time.
So, to render an effect, I simply grab my Segment Mode button and select the Blue Dot Effect, and render it back. OK, and it's now going to create a video file to play back off that effect. Notice that the blue dot goes away, and we're able to play this back in real time without any problem. Now, another time you need to render is whenever you're receiving warning bars in your Timeline. Here, we received a warning bar saying that we were dropping frames.
So, we're going to need to render this, if we play it back in Full Quality. Notice that before when we dropped to Best Performance and we were able to play this back, if we needed Full Quality, for example if we needed to lay this out to tape, we're going to need extra help. Rather than marking an In and marking an Out, making sure all tracks are selected, and then coming to Render In/ Out, we're going to render intelligently. Because rendering renders from the top down, the only track you need to render in a composite is the top track.
When you render the top track, it actually ends up rendering the very top track plus the result of the composite below it. So, in this composite, if I added a track on V8 and rendered just V8, it would render the one, two, three, four, five, six, and seven as well. That's going to save time and it's going to save hard drive space. So, what I've done is I've added an edit, which you do right here, and I'm going to grab a Mask effect from the Image category.
You can grab any effect that has no bearing on the composite below it. So, because of mask actually is going to require me to go in and adjust parameters to affect it, it's a really good candidate for a render effect. Now, all I need to do is grab my Segment Mode button and select it. Render my effect. OK, you'll notice that I have no green or blue dot effect here. That means this is a rendered effect, which is pointing to a brand-new media file on my drive.
Now, when I play through this, I'm going to play back with absolutely no dropped frames. Let's watch! A moment ago, this was sputtering like crazy. Now it's very, very smooth. So, my advice would be to go through your sequence and play through. See where Media Composer is giving you these warning bars, because it does tell you exactly where it's struggling, and then put a mask above those areas and then just render that mask. It's going to help you out, it's going to render the composite, and it's going to save you lots of time and lots of space.
As computers and drives are getting faster and faster, Media Composer is able to play back more and more effects in real time. However, you will certainly need to render some effects, especially blue dot effects and those effects stacked within a composite.
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