Blur tool pulls the edges of canvas into the blur

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  • Updated 2 years ago
Why is Camtasia pulling the edges of my canvas into my blur?
I want to blur the content, not the lack of content. This makes the edges of my blur look sloppy and doesn't blend in with the rest of the content on the canvas. The blur shouldn't be pulling black into the edges as shown. Is there a fix for this?
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Kristen F

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Posted 2 years ago

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Joe Morgan

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I cannot tell you why it happens but I can duplicate the problem.

You should probably contact tech support and report it as a bug.

Regards,Joe

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Kristen F

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Thanks for your quick response. I'll submit a ticket.
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Rick Stone

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Does it change or help if you configure your canvas to be white instead of black?

Assuming you are intent on blurring the entire video area, one workaround I can fathom would be to adjust the size of the video so it is smaller than the canvas. Then just blur the smaller area. You could use visual properties to adjust it so the timing would be basically instant.

Cheers... Rick :)
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Kristen F

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Hi Rick, thanks for your suggestions. Changing the canvas color to white did not affect the blur. Although, I thought that was a good idea! I won't be resizing the image to fit fully inside the canvas because that's going to make the rest of the imagery on the canvas unbalanced.  I'll probably have to deal with the imperfection of the blur for the time being, although I hope TechSmith fixes this soon.
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Joe Morgan

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If you reduce the blur level it helps.
I to changed the canvas to white before I responded the first time.I figure if you ask the poster to try it, you should probably try it yourself.
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Rick Stone

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Another thought would be to export the frame and blur the exported image. Then just layer it above the video and fade it out when you need to show the clear bit.
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Kristen F

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That's a good idea, too.  Thanks!
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kayakman, Champion

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I just did a little testing; the behavior seems related to the color under the blur callout; dark/black objects being hidden by the blur did not seem exhibit the issue; white/light gray/green all showed the problem
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Kristen F

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Hi kayakman, I'm guessing that maybe the reason dark objects do not exhibit the behavior is because the color being pulled into the blur is black, regardless of the canvas color. The issue may still be happening, but might not noticeable if you're blending black with another dark color?

I did notice, however, that if the object below the blur is extended far enough beyond the edges of the canvas, the color getting pulled into the edges is not visible since it's way outside the canvas.

White layer beneath not extended:

White layer beneath extended far beyond the right edge of the canvas:

This fix would probably only be useful for blank callouts, since as soon as you start resizing text boxes and images, you start getting distortion and text moving around.

Thanks to all of you for helping me troubleshoot this so far. I've submitted a tech support ticket so we'll see what they say.

(Edited)