File Output Rendering Effect

File Output allows you to take a “snapshot” of a rendering before some or all of the other Render Effects are applied, depending on the placement of File Output in the Render Effects stack. You can save different channels such as Luminance, Depth, or Alpha to a separate file while rendering an animation.

You can also use File Output to convert an RGB image into a different channel and send that image channel back into the Render Effects stack. The rest of the effects can then be applied to that channel.

Interface

Destination group

Files
Opens a dialog so you can save the rendered image or animation to disk.

The rendered output can be a still image or an animation, in one of the following file formats:

AVI File (AVI)

BMP Image file (BMP)

Encapsulated PostScript format (EPS, PS)

JPEG File (JPG)

Kodak Cineon (CIN)

MOV QuickTime file (MOV)

PNG Image File (PNG)

RLA Image File (RLA)

RPF Image File (RPF)

SGI Image File Format (RGB)

Targa Image File (TGA, VDA, ICB, UST)

TIF Image File (TIF)

Devices
Opens a dialog so you can send the rendered output to a device such as a video recorder.
Clear
Clears any file or device selected in the Destination group box.

Driver group

These buttons are available only when you choose a device as the image source.

About
Provides information on the source of the image-handler software used to bring the image into 3ds Max.
Setup
Displays a setup dialog specific to the plug-in. Some plug-ins may not use this button.

Parameters group

Channel
Lets you choose which channel you wish to save or send back in to the Render Effects stack. Choose Whole Image, Luminance, Depth, or Alpha to display more options in the Parameters group box.
Affect Source Bitmap
When activated, this will take in an image with any effects previously applied, convert it to the channel selected, and send it back into the stack for the rest of the effects to be applied. Your rendered image will be saved in the channel selected. This parameter is not available to the Whole Image channel.
Active
Turns the File Output feature on and off. Unlike the Active checkbox available in the Render Effects rollout, this checkbox is animatable allowing you to save only desired portions of a rendered scene.
[Depth parameters]
When Depth is selected as a channel, new parameters are available for determining what parts of the scene should be rendered into the Depth channel image.

Copy After choosing a camera with the None button, click Copy to use the camera’s clipping planes to determine which part of the scene should be rendered into the Depth channel image file.

[camera button] Lets you select a camera to use for copying clipping planes. The label reads "None" before you have selected a camera. Click this button to activate it. The button is highlighted until you select a camera. After you select a camera, the camera name appears on the button label.

Near Z Specifies the beginning distance from the camera that should be used in determining where to start rendering the scene’s geometry in the depth channel image file.

Far Z Specifies the ending distance from the camera that should be used in determining where to stop rendering the scene’s geometry in the depth channel image file.

Fit Entire Scene When on (the default), renders the entire viewport’s scene geometry to the Depth channel image file, automatically calculating the near and far Z that are required. All other Depth parameters are unavailable unless Fit Entire Scene is turned off.