# Performing Smart Motion Search

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Smart Motion Search enables user to perform fast and intuitive archived motion search by selecting a region on video and allow the application to automatically refine the archive, and highlight the fragments that contain motion.

To perform Smart Motion Search, select the desired region and Nx Witness will display all fragments that contain motion throughout the archive (scanning through a yearly archive only takes a few seconds).

IMPORTANT: Smart Motion Search in Nx Witness assumes the selected camera supports motion detection. It is important to perform motion setup as well. See "Setting up Motion Mask and Motion Sensitivity".

To perform Smart Motion Search:

1.Open Motion Grid on the camera:

•use camera’s Quick Button ()

•open the camera's context menu and choose Motion Grid (or select the camera and use the shortcut Alt+G)

The motion grid will appear:

Note: If red fragments appears in motion zones, motion detection is supported by camera.

2.Select the region the motion should be searched on (using the mouse):

•Hold Shift+click-and-drag

•Ctrl+click-and-drag to add another region

•Click and Hold or use the context menu (Clear Motion Selection) to clear all regions.

IMPORTANT: Motion will not be visible and detected on a region marked as Motion Mask.

As soon as the region is selected, Timeline will be populated with red bars. Each bar indicates a recording period that contains motion.

IMPORTANT: Navigation in Timeline using the red fragments is only possible while Smart Motion Search is on.

To disable Smart Motion Search, clear all regions in the motion grid, disable by pressing the button, or use the context menu option Hide Motion Grid (shortcut Alt+G).