applying gaussian blur in a specified shape

[Mike Clasby]

Dup the layer, mask and apply the Gaussian blur to the top layer. M reveals the mask for the layer. Set the mask to Subtract, or check the Invert box. Chang Mask Shape, Feather the mask and expand contact, mask opacity, all keyframeable.

[Chris Smith]

Use compound blur. Put the mask on a white solid. Precomp it so it rasterizes it. Then use that precomp as the compound blur map.

Chris Smith
https://www.sugarfilmproduction.com

[Ruby Gold]

Thanks for this. Let me just make sure I understand. Dupe the layer. On the new duped layer (which is below the original), apply the mask where I want the blur to take effect. Then apply the blur effect to the original (not masked) layer.

Then I use “M” to reveal the mask (but what is “M?”–sorry), and set the mask to subtract or check invert. Is that right? And if you could let me know what M is–that’d be great.

thanks-

[Bill Clotz]

‘M’ is a button on your keyboard 😛

[Ruby Gold]

oh, now that’s embarrassing. ;-}

thanks!