---
title: "Velocity"
canonical: "https://documentation.chaos.com/space/VRAYNUKE/110625163/Velocity"
format: markdown
---
The Velocity Render Element is a color or grayscale image that stores velocity information about objects that have moved between the current frame and the next frame. 

 

**Overview**

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UI Path: ||Toolbar|| >** V-Ray Menu icon > Render > VRayRenderElement > Type: Velocity**

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## **Properties**

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![image](media://a25ed209-e92c-4563-a3f2-27efa8062cb4)

 

 

**Clamp Velocity** – Sets the limit for **Max Velocity**. When enabled, this option limits the max velocity value to 1 for floating point images, 255 for 8-bit images, or 65535 for 16-bit images. This option is useful only when writing to an 8-bit or 16-bit file format.

**Max Velocity** – Used to scale the velocity values written to the render element so that they fit within the range specified by the **Clamp Velocity** parameter. This is only useful if writing to an 8-bit or 16-bit file format. 

**Ignore Z** – Disregards motion along the Z axis.

**Filtering** – Applies the image filter to this channel. Image filter settings are in the [Image Sampler ](https://docs-chaos.atlassian.net/wiki/spaces/VRAYNUKE/pages/110625377)tab in the [VRayRenderer ](https://docs-chaos.atlassian.net/wiki/spaces/VRAYNUKE/pages/110625451)properties.

 

## **Common Uses**

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The Velocity Render Element is useful for adding motion blur in post production at a composite level without the need for re-rendering. In the composite shown below, motion blur was added based on the amount by which the color differs from medium gray. The Robot arms and the creature that were given a pale yellow color in the render element are the most blurred.

 

 

> Macro (inline-media-image)

   
Beauty Composite with motion blur added  
using the Velocity Render Element

 

 

## **Notes**

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- It is recommended to disable this Render Element when rendering with Motion Blur. This channel generated when 3D motion blur is enabled in V-Ray. However, the element will also be motion blurred along with the rest of the image. This will make the Render element not usable in compositing.