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Soft edge crop?

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kde-pchristy
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Soft edge crop?

Wed May 23, 2018 6:45 pm
Has anyone found a way of putting on a soft edge when cropping an image over a background?

TIA,

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Pete
kde-pchristy
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Re: Soft edge crop?

Thu May 24, 2018 8:35 am
I've made a work-around, but I'm not 100% happy with it. I'm trying to superimpose a graphic with a white background of about 1/3 screen width over a panoramic image. Leaving a hard edge doesn't look nice. I've placed both components on the timeline at 5 secs duration, and made a soft edged wipe - also of 5 secs duration between the two. Stepping through frame by frame, I've found a point in the wipe at just the right place, and then saved that frame as a png. The remaining issue is that the graphic has some small-ish writing on it which suffers a bit with all the processing it has gone through!

Its still readable, but not very good.

Aside from doing the superimposition in something like Gimp, and then importing it, does anyone have a better idea or workaround?

--
Pete
markoc
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Re: Soft edge crop?

Thu May 24, 2018 1:54 pm
I guess there is an alpha mask behind your crop.
If that is the case, you can use the alpha operations to soften the edge, or else just do the crop by making an alpha shape with soft edges.

https://userbase.kde.org/Kdenlive/Manua ... operations

https://userbase.kde.org/Kdenlive/Manua ... pha_shapes
vpinon
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Re: Soft edge crop?

Thu May 24, 2018 2:53 pm
Hello,
Maybe overkill, but the rotoscoping effect has a softening parameter too...


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