How to blur a moving number plate with 19.02.28


#1

I wish to blur a moving number plate from two parts of a video.

I have tried with keyframes on one track but found the ‘mask simple shapes’ filter was either not working, not visibly doing anything or I just couldn’t get it to work. I have also tried with two tracks: same result. Any help on this will be greatly appreciated.


#2

Here is a tutorial on how to cover up sections of a video with the Mask filters:

Another way is to use the Spot Remover filter.


#3

Maybe you are not adding all the needed filters or putting in the proper order:

Mask: Simple Shape
Blur
Mask: Apply


#4

You do not need 2 tracks.

image

image

1 track using mask simple shape, mosaic, mask apply. Replace mosaic with blur if you want to.

To move the blur, key frame the H and V positions of the mask to follow the movement. Not easy, but doable.


#5

Thanks DRM, the tutorial nailed it! Must have dreamed the order was blur-mask simple-mask apply and didn’t appreciate importance of order!


#6

Spot-on, thanks.


#7

Thanks Sauren & especially for taking the time to email. As a complete novice, I didn’t appreciate the importance of filter order. Works fine now._