I'm selling a car and like a dummy I shot some video with the license plates on. Rather than reshoot I want to blue (pixelate) out the plates and just keyframe them. I know how to do this with a simple black or colored mask but forget how to do the blur thing?
Blur is a little more complex because you need some compositing, just use the black. It's a LOT easier and I'm assuming it doesn't need to be super-fancy to sell the car.
Unless it's for a client. :)
You make a copy of the section of video to a new track to be blurred out. Then you apply a pan/crop mask on the event, specific part to be blurred out. Don't forget to keyframe. If you have something to motion track it will be easier because then you can use import keyframes in to whatever you use (I use a keyframe/x/y position importer for Vegas) Then you apply a blur to the clip (I used linear blur).
I use Syntheyes & had a custom importer made but the Veggie Tool Kit (i believe) had a generic keyframe importer for motion-tracking kind of things. I believe it could be used for any motion tracker that exports a frame#, x & y pos.
Thanks for the advice. I did what you said, just picked a couple spots to refine mask shape and position and then added some as needed to follow object.
I used the pixelate filter but I'm going to try the blur instead.
I use the cookie cutter rather than pan-crop. That way you only have to move the mask around with each keyframe, rather than having to move the mask AND reposition it. Cookie cutter also has a built in edge blur so only one effect is needed.
I don't understand? "move the mask and reposition it." Isn't moving it repositioning it? I'm pretty much finished this project but I want to experiment with the cookie cutter.
Thanks for the tip. I'm sure it'll make sense once I fool around with it.
Well, it seems to me that doing this operation with pan/crop would be a nightmare because when you crop, it centers the cropped section in the middle of the frame. So, whenever you have to change the position of the cropped section you'd also have to adjust where it appears in the frame. That would be a huge pain in the butt.
Cookie cutter leaves the "piece" right where it originally was. No repositioning of it necessary as you move it around to follow the object you're blurring.
@Gary James you can use BCC7 motion tracking as a composite or Boris RED either direct on the clip and apply to an internal track in Red or use Red save tracking data and then use Vegasaur for Vegas tracks very cool easy for multiple motion tracks.
I was talking about using the mask part of pan/crop, but pan/crop itself. That's more flexible then the cookie cutter because it's any shape, not a preset one.
If you use cookie cutter you still have to move the piece to follow the part to blur, same with the pan/crop mask. Pan/Crop mask also gives you a larger visual area to move around in and you can zoom in/out.