Auto Crop

  • Compatibility After Effects
    Please check exact version compatibility under the "COMPATIBILITY" tab below
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Quick Overview

Quickly and easily crop a composition down to it's contents. It can crop based on the current frame, all frames or a mask you create.
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Auto Crop


What is Auto Crop?

Auto Crop is a tool that allows you to quickly crop a composition using one of three different methods: Auto Crop, Auto Crop Duration and Crop to Mask. It works quickly and accurately no matter what layer types are inside the composition.


1.  Copy Auto Crop.jsxbin into the ScriptUI folder for your version of After Effects. You must have After Effects CS3 or higher to use the Auto Crop script.

Mac: ~/Applications/Adobe After Effects YOUR VERSION/Scripts/ScriptUI Panels Windows: C:/Program Files/Adobe/Adobe After Effects YOUR VERSION/Support Files/Scripts/ScriptUI Panels

2. Now start up After Effects. You will see  Auto Crop.jsxbin at the bottom of the Window menu. Select it to open the Auto Crop panel.

Auto Crop Methods

Auto Crop

The first button,  Auto Crop will look at the current frame of the selected pre-comp and resize it so that it fits the contents at the current frame. This will work for any type of layer, however it only takes into account layers that are visible. If a layer is turned off or its opacity is 0, it will be ignored when the crop takes place.

Auto Crop Duration

Similar to Auto Crop, however Auto Crop Duration look at every frame between the pre-comp's in and out point. This means that if there is any sort of animation within the composition, the Auto Crop duration will find its vertices and crop to those. Because auto cropping the duration looks at every frame, the cropping process could take a long time. A progress bar is shown on the screen to let you know how much has been completed. You are also able to cancel the cropping process.

Crop to Mask

Unlike the previous two, Crop to Mask requires the user to give a mask for where the crop should happen. Masks must be rectangular and mask lines must be parallel to the rotation of the . If your layer has more then one mask, an alert will come up asking which mask you want to use for the crop.

  • Auto Crop 2015 UI
After Effects CC 2018, CC 2017, CC 2015.3, CC 2015, CC 2014, CC, CS6, CS5.5, CS5, CS4, CS3
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