Join Richard Harrington for an in-depth discussion in this video Post-render actions, part of After Effects Guru: Faster Previews and Rendering.
While render links are very useful, After Effects has some additional controls on what happens to a file, with the Post Render action command. This allows you to force something that you've rendered come back into an After Effects project, or even update a composition where a nested comp was used. For example here, let's pre-render a few of these things. There's our animated logo. Let's turn off the proxy for a second and we'll force that to render; there it is. And I could add that to the Render Queue. And then, I also want to force this background layer to render, so I'm going to add that to the Render Queue.
This way, these two things are pretty much locked in. And I want to bake those so I don't have to always render 'em with each time. Let's maximize this window here and we can clear out a few things that we're no longer using. Now, in this particular case, this is a bumper for a TV show, a promo that goes into every single commercial break. And as such, this background and this animated globe are going to be used a whole bunch of times as I go forward with this project. Now in this case, these two elements: the motion graphics background and the animated logo are pretty stock.
This is a graphic bumper template and what would happen is, is within the newscast, we might put a different video clip in there to promote the story coming up after the commercial break. Rather than having to re-render the background and the logo with every single version of this project, I can speed things up and say, you know what, render these two pieces and then swap 'em out in the project for this version and all future versions when you go to edit. And what I could choose is to render things out. Now, I could tell it to import this just into the project and be done with it, or import and replace usage.
And let's just target that correctly here. Using the pick whip, I could say replace usage in that bumper. There we go. And let's do the same right here. Good. Now when we render, what's going to happen is it's going to pre-render those files, and then update this item here and swap it out, which could speed things up, particularly if we had multiple bumpers that use these same files. Plus, maybe you just want to render things on your own. You don't have to do Import and Replace, instead you can actually just choose that post-render option to simply be import and it will just add it to the project as well.
Either option works well; find the one that's going to be a good match for your workflow. Import and Replace to speed things up for template type projects, or simply Import if you just want to render something and then bring it back in as a source to your project.
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- Creating render settings templates
- Using multiple output modules
- Setting processor usage
- Rendering multiple frames simultaneously
- Purging RAM
- Controlling your disk and media cache
- Creating and saving previews
- Controlling composition settings