How does camtasia record fullscreen in 1080p when my resolution is 4k?

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Hi,

Basically I have a 4k screen and I want to record the whole screen using camtasia. But I want to actually have 1080p resolution for the recording.

So I thought either I will have to set my resolution to FHD for the recording or have the 4k recording downscaled to FHD which is not ideal as the sharp texts will be blurry, as it's a recording of a Windows app.

But to my surprise Camtasia does allow me to have the output as FHD seemingly without any resizing operation. So I am wondering how does this happen?

Is it doing some hiDPI scaling of some sort for the recording itself? I just want to know how it works technically so I can be confident in recording this way.

I want to use my app in 4k but have the recording done as if my screen resolution was 1080p in terms of video resolution, not dpi scaling.



Thanks a lot in advance.
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Ryan

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Posted 7 months ago

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Joe Morgan

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What version of Camtasia are you using?
If its Camtasia 8. The maximum Canvas area/resolution is 2048 x 2048.
Camtasia will scale project settings to 1920 x 1080 automatically.
This would create the situation you seem to be describing. 


How does Camtasia record fullscreen in 1080p when my resolution is 4k?
In short,  It doesn't.
It records exactly what you see.
Matching the current resolution and/or magnification level selected for the monitor.

Camtasia versions 9 through 2019.
Has a maximum canvas resolution of 4K.

In Preferences, there are default project settings.
If they are set to Maximum 1080p HD.
New projects will be 1080p & Camtasia will rescale a 4K video to fit.



Do any of these scenarios apply to you ?

Regards,Joe
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Ryan

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Hi Joe,

Thanks for replying. Indeed I am using 2019. So now it makes a bit more sense. I see that option you show me is set to FHD but my recording resolution is set to 4K, so then like you said, it's resizing my 4K recording to FHD? If so I have to experiment with this, as to me it looks sharp but I wonder if FHD recording will look better.

Because it's an app like photoshop with textual UI, I want these to look sharp as original but not sure if rescaled hidpi to FHD looks better than FHD recording for FHD output.

Do you have any idea on this?


Thanks a lot again :)
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Joe Morgan

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If you want the sharpest video possible. You want to record, edit and produce using the same dimensions. Which puts you between a rock and a hard place.

I have a similar situation.

My primary monitor is 2560 x 1440 “2K”. when I record full screen and produce to 1080. There is some blurring.

The best way “In my opinion” to record, edit and produce a 1080p video is to use a 1080 monitor for recording purposes. My secondary monitor is 1080.So I use it.  

Some might suggest changing the 4K monitors resolution to 1920 x 1080. This works, but its highly impractical.

The recording will be pristine at 1920 x 1080.

However, while recording. Your beautiful 4K monitor will be blurry to your eyes. And everything will be magnified.Because of this, editing an image in Photoshop is problematic.

 How does one demonstrate obtaining the correct level of Gaussian blur. When the image is already blurry?

Same with everything else, editing an artificially blurry image and doing it correctly is pretty much impossible.

Plus, you’re staring at a blurry screen the whole time. Which is annoying as can be.

So you need to weigh your options. If you have any further questions, or need further clarification. Just ask.

I’d like to hear back from you. Once you’ve decided what to do.

Regards,Joe

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Ryan

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Thanks you are so right. I tried FHD input FHD output, 4K and FHD output, and 4K to 4K and wow the difference is crazy.

FHD in and out is absolutely noticeable by eye so that's out. I was using 4K to FHD because of camtasia defaults and it looks a lot better. But once I checked 4K to 4K, it's no match. 4K to 4K is so crisp, it has so much detail so that's what I am gonna use.


Cheers.