Film Compositing / Working with Proxies
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Subtitles of the Movie
This movie will cover how to use proxies and speed our workflow when working with high-res film images in Shake. When a lower resolution image can be substituted temporarily for a high-res film image, it's referred to as a proxy. Think of it like voting by proxy and it kind of makes sense. Using a low-res proxy speeds up the rendering process because the program is processing smaller images, and this means improvements in processing time, computer memory used, and time bar scrubbing. But the quality of your viewer image is going to be lower and it can cause problems with using pixel picky nodes, like the tracker, stabilize, and match move, and while keying. It's recommended that you only use proxies when you're making low-res comps or testing color corrections. Once you've created your node tree using proxies, you should return your script to full resolution for rendering your final File Out nodes. There are three ways to use proxies, and they're all controlled in the global parameters. First is to turn on a use proxy setting to speed your workflow, especially if you're working on a project for a shorter period of time, and don't have the time or disk space to render low resolution files. You can set your use proxy to proxy 1, 2, or 3, or set it up here and proxy 1, 2, or 3 corresponds to lower and lower resolutions of image. Your second option is to turn on interactive scale. An interactive scale speeds up the use of interactive controls and turns on proxies only while you're adjusting parameters. It doesn't effect your output. The third option is to turn on use proxy and render a set of low-res images. We would expand the use proxy sub tree and use the proxy set parameter. Here's how. Let's expand our globals so it fills the frame. There's a lot of options here. First, we would choose the proxy set relative to render out 3 sets of proxies relative to the size of your originals. One half, one quarter, and one tenth are our defaults, but if we want to make them smaller or larger, we would just change this decimal setting right here. So one half is 0.5, one quarter, 0.25, and one tenth is 0.1. Then we would return to our node tree and choose the File In nodes that we wish to render out as proxies. Go to the Render menu and choose Render Proxies, and this opens up a render proxy parameter window. Choose Selected to render only the File In nodes that were selected. Set your frame range here, or you can click on the updated button a couple of times to update now from the globals. Max thread is your maximum number of processors. Choose Create Proxy Directories if you want Shake to make folders for your proxies. Turn on Sequential to create each file one at a time, that way all of your half sized proxies would be rendered first, then your quarter, then your tenth. You can set your preview to on or off. This is basically toggling your flipbook on or off while it's rendering. Turn on which proxy sets you want to render, the first one, which defaults as half, the second one which defaults at a quarter, or the third which defaults as a tenth. And finally, click Render. Now whenever you turn on a proxy setting by using the Use Proxy buttons right here, or interactive scale, Shake will access these low-res files instead of writing low-res files to the memory cache every time. Proxies are a great way to speed processing time when working with high-res images and our proxy settings can all be set in the global parameters, just don't use them for final outputs or for pixel precise processes like keying and stabilizing.
Tutorial Information
| Course: | Apple Shake 4 |
| Author: | Kalika Kharkar |
| SKU: | 33768 |
| ISBN: | 1-933736-87-9 |
| Release Date: | 2007-06-28 |
| Duration: | 9 hrs / 106 lessons |
| Work Files: |
Yes |
| Captions: | For Online University members only |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |
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