Can't Record Two Dual Monitors on MacOS OS X Mojave

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I have a Macbook Pro with an external monitor setup in Extended Desktop Mode.  When configuring what I want to record in Camtasia 2019 for MacOS, the selector lets me select either the monitor of the laptop or the extended monitor but not both.

I'm also unable to drag a region between the monitors.  The draggable box can only be stretched to the edge of the monitor its currently on.  It can be dragged whole to a different monitor but not stretched across between the two - similar to how some online examples of Camtasia 8 on Windows show. So this seems like an issue with MacOS and/or Mojave maybe?  As there's lots of examples of this on Windows in older versions of Camtasia.

Here's an image of the issue. This is the vertical line between my two displays. I can screen-grab across in MacOS but Camtasia can't select it's region across it.



This is a bummer because I need to record both monitors content at the same time. Then it would be nice if it layered them in the timeline (similar to how it does with the video camera capture).  Then I could manipulate and hide/show them how I see fit.

This is easily done in Open Broadcaster Software (OBS).  You can record both screens, and/or any number of windows, and arrange them exactly how you want.

This is probably a deciding factor in our organization passing on Camtasia 2019.

P.S. Camtasia 2019 is crashyAF in MacOS Mojave.
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Ross Newton

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Posted 2 months ago

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Joe Morgan

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Have you tried typing in the combined resolution of the monitors?
I don't have any 4K monitors, I've got a 2556 x 1440 and 2::: 1920 x 1080's.
It's 6400 x 1440 pixels and I can select an area that large by dragging or typing in.

Regards,Joe

And I'm a Windows user. So theres that, but this functionality should be the same.
(Edited)
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Ross Newton

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Thanks for the response. That doesn't work unfortunately.

I'm typing in 8000 for the horizontal input and once I tab to the vertical input, I hear MacOS give a little "beep" that something didn't work and the bounding box just expands to the full width of only one monitor. It never crosses over into the other monitor?

Do the two monitors have to be the same resolution perhaps?


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Joe Morgan

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It says in your screen shot that the width is 6016.

That must be  Apple’s New 6K 32-Inch Display with 6016 x 3348 resolution? Nice {:>)

However, I'm guessing the actual limitation here. I suspect Camtasia it limited to recording two 4K monitors. And you've simply blown way past it's limits.That's a lot of information without bogging down a system as is.
Camtasia's recorder is a bit demanding on system resources as it as, or was anyway. I haven't run any tests on the newer versions.
I don't know if these information on the recorders limitations available or not. TechSmith would  know.You could contact them. I'll see if I can figure it out, it made me curious.

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Ross Newton

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No... definitely not the new $5000 Apple 6K monitor!  I'm using the MacbookPro's built-in Retina screen (2880x1800) and an ASUS 4K external monitor (3840x2160) (about $350 on Amazon!).  Looks like there's some kind of bug in the resolution being reported. 




The bounding box is always limited to the width (and height) of whichever monitor I drag the bounding box in.  But the weird thing is after either dragging the bounding box the maximum width or attempting to type in a larger value - the bounding box width is reported incorrectly as 6016x3384 on the external 4K monitor.



And as 3358x2100 on the Retina. 



So both of those are way higher than what the monitors actually are.

This is probably some kind of external monitor bug on Mojave with Camtasia.  @TechSmith - You're welcome for the trouble-shooting. Please fix! I submitted an issue report.

Definitely a hard-pass on Camtasia 2019 for our company who are all on MacOS Mojave.
(Edited)
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Joe Morgan

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Well, I was a little envious of the $5,000 monitor. I looked up 6016 resolution and that's what I found. {:>)
That's quite odd, you can't even double the horizontal resolution of either of those monitors and get to 6016.
I had to talk to tech support anyway, so I asked them what the max resolution for recording was.I was told 4K was the max.
No 5K retinas allowed.
So maybe their limited by vertical resolution? The answer didn't really add up to me. I can record at 6400 x 1400. Which is wider than the 6K monitor.But none to tall.

Anyway, it sounds like a minor glitch to me. Graphics driver error or odd Camtasia setting that's off. I'm sure it can be remedied. I'd give tech support a whirl.It's free and relatively painless in my experience.    

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André van Haren

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I tried it on my dual monitor setup and got the same problems. The Camtasia border snaps to the edge of one of the monitors, but does not include both.