The image sequence to receive the blur effect.

The blur effect is only applied to these channels. You should leave this set to all and select the channels you want to blur using BlurLayer.

Select the blur type to apply:

• zoom - smears pixels in all directions from a center point. You can use this to simulate light rays, or to transition between one clip and another.

• radial - smears pixels around a center point. You can use this to simulate motion blur on a rotating object.

• linear - smears pixels in a given direction. You can use this to simulate motion blur on a moving object.

The blur effect is only applied to these channels. This control works together with the channels control. For a channel to be blurred, it needs to be selected from both the channels and the BlurLayer dropdown menu.

You can use the checkboxes on the right to select individual channels.

Enables the associated holdout channel to the right. Disabling this checkbox is the same as setting the channel to none.

This control only has an effect when BlurType is set to zoom.

Pixels corresponding to non-black pixels in the holdout channel are NOT averaged into the final pixel value.

This control only has an effect when BlurType is set to zoom.

Sets the blur origin or center on the xy axes, or drag the BlurCenter handle in the Viewer.

When using linear blur, BlurCenter only has an effect if UseTarget is enabled.

The length (in pixels) of the blur applied.

When using zoom blur, negative values reverse the blur direction.

Determines the direction of linear blur when UseTarget is disabled.

When using linear blur with UseTarget enabled, a vector is created between this and BlurCenter. This vector then determines the direction of linear blur.

You can also adjust Linear Target by dragging the target handle in the Viewer.

When enabled, the direction of linear blur is determined by a vector between BlurCenter and Blur Target.

If this is disabled, the direction of linear blur is determined by Blur Angle.

The number of samples. You can increase this value for smoother blur, but note that it takes much longer to render.

Pixel aspect ratio. If you’re working on non-square pixel or anamorphic footage, you need to set this value correctly to avoid unwanted distortions.

The scaling factor of the blur. The minimum value is 1 and produces the highest quality.

When BlurType is set to zoom, lets you offset pixels along the direction of the blur.

Enables the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.

The channel to use as a mask. By default, the blur is limited to the non-black areas of this channel.

Copies the mask input to the predefined mask.a channel. Injecting the mask allows you to use the same mask further downstream.

Inverts the use of the mask channel so that the blur is limited to the non-white areas of the mask.

When enabled, only apply the effect to the edge of the mask.

When disabled, the effect is applied to the entire mask.