Camtasia:Mac and Webcam - High CPU load and visible artifacts

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Hi,
I am currently evaluating Camtasia:Mac and I observe that capturing webcam videos is subpar in two aspects:


1. CPU load rises, hence the core temperature rises, too, and the fans speed up to a level that the noise is audible in the recording. Particularly, there is a process named CLRecorder2.10.7 that runs at up to 220% CPU load while recording the web cam.

(Side notes:
(1) I use a Rode NT-USB mic that does have a cardioid pattern and it points away from the Mac. Still the fan noise is loud enough to make it into the recording.
(2) I use a Mac mini late 2012 with a 2,6 GHz Intel Core i7 processor.
(3) Other recording apps such as Screenflow or Iris do not have this problem.)


2. Occasionally the recording contains visible artifacts (tiles) that seem a result of missing bandwidth while processing the video stream. 


I use a Logitech HD Webcam C525.

Is this problem known, and is there a remedy for it? Or will this get fixed in a future version?

Thanks,
Christoph
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Christoph

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Posted 2 years ago

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brucerothwell

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My experience is that Camtasia:Mac does poorly with the Logitech cameras.

I have experimented with using a free program called "Quicky", for doing capture from my Logitech C615.

Here is a video that shows a demo if it, and indicates the link to where to download Quicky:

https://drive.google.com/open?id=0B5PVTZQ5P09BeldMZXpBcVhjbVU
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Christoph

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Thanks for the tip. Using a second app for cam capture is indeed a workaround. However, I would expect a commercial app like Camtasia to work better than stuff that can be downloaded for free.

I just found a vaguely related entry on the TechSmith support pages but I am not sure if my case is covered by this known issue. I don't use any of the cameras listed there, and I also do not observe out-of-sync issues. Frame rate also seems ok, but the occasional artifacts that I see plus the high CPU load indicate that there is a bandwidth problem.

What worries me is that this issue was posted over a year ago, and the article does not indicate that it has been fixed by now. 

(BTW, I hope you don't mind if I do not follow the link shown in the video, as that site looks already spurious in the Google search result.)
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brucerothwell

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Well, I used that link to get Quicky, and had not issues.  Yes, it seems oddm but worked out for me.

As far as the length of time the issue has been known, I can only say there is a similar situation with the fact that Camtasia:Mac will not record _stereo_ audio from an external sound device (USB, Firewire, etc).  The issue has been know for 3 or 4 years, and as far as I know, there are no plans to resolve it!

So, suffice it to say -- the Mac support here appears to take a back seat to Windows.
(Edited)
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Christoph

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the Mac support here appears to take a back seat to Windows.
That's a pity. I like Camtasia more than Screenflow, and if it wasn't for the webcam issue, I would already have purchased a license. Screenflow also has its flaws, most notably the unintuitive UI and the low quality of the audio noise reduction (an important feature to me). Guess I'll go with Camtasia plus a second app for the Web cam.

I found that Photo Booth and QuickTime do a quite good job here. I tested both of them just now, after remembering that they both have cam recording capabilities.
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eric.vanoncini

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I had the same problem with my Logitech webcam until I realized that it was my anti-virus software (Bitdefender) that was blocking the webcam every time I tried to use it... if you have Bitdefender, you can turn off the setting that blocks your webcam!