camtasia mac system audio recording and playing back fast

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  • Updated 2 years ago
Using Camtasia 2.10.5 with OS X 10.11.5, the recorded system audio is playback glitchy and fast.  Recording from the mic input does not have this problem.  This is on both an iMac 13,2 and MBPr 10,1.  Going back to the last version of 2.9 also had the same problem.  It looks like this might be an OS issue.  Any one else having problems like this?  I need to get this working ASAP.
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Gil

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Posted 4 years ago

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Jack Fruh, Champion

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Hi Gil, I've not had this problem. but I am on OSX 10.10.5 and Camtasia 2.10.5.

If you are desperate, check out the program "Loopback" by Rogue Amoeba Software.

Loopback can capture your mic and your system audio into a custom audio device that you can use in Camtasia.  There is a free trial, and it should be good enough for you to figure out if the problem is system related or specific to Camtasia.

- Jack
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Gil

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I have to use loopback for a vo source.  I need system audio to capture audio out of Pro Tools.  Thanks for the suggestion though.

Gil
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Jack Fruh, Champion

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Gil if you use loopback with protools as its source, and set camtasia with loopback as its input, does the sound record reliably in that scenario?  

At this point we're just trying to narrow down where the problem lies, not necessarily setup your final recording config.

Jack
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Gil

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Yes it does, but I do not get loopback and Pro Tools as separate audio tracks.  Only system audio has the issue.  Any source recorded from the mic input is fine.

Gil
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Jack Fruh, Champion

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yeah this is a bit of a bummer.
You can create a multi channel agregate device in Loopback, but Camtasia squashes it down to 2 channels.

You could in theory, route mic to the left and Protools to the right, but given you're trying to do a demo of protools, you're certainly going to want to do that in stereo.

I wonder if uninstalling and re-installing the audio capture components from camtasia would help?

open camtasia preferences.
on the recording tab click "uninstall component"
restart your mac
update camtasia to the latest version.
open camtasia preferences, and do "install component"

See if that helps?

- Jack
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Gil

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Yeah, I have done that as well as trashed everything Camtasia and reinstalled.  I don't have an earlier OS version on a system at the moment to test, but I guess I might need to make a boot drive with 10.11.3 to see if it is an OS problem or not.
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Gil

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Revisiting this issue.  The fast, glitchy system audio playback still persists with the latest version of Camtasia 3.0.6 on 2 different machines with OS X 10.12.6.  Microphone records fine.  Any ideas how to resolve this are welcome. Thanks.

Gil
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Aaron Y, Employee

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Hello!

Just to confirm, is this system audio recording that is playing back fast and glitchy or a microphone recording playing back fast and glitchy? Sounds like anything coming through your system audio?

Are you just using the built in system audio? Sounds like you might be using Pro Tools, thus you are going through some other hardware for your system audio?

We can find out for sure though. Can you open a support ticket here: https://support.techsmith.com/hc/en-us/requests/new

In the ticket, please attach the following:

I'd like to get a System Profile Report:
- Click the Apple icon in the top left corner of your screen and choose About this Mac
- Click System Report or More Info>System Report
- Go to File > Save as or Save... and save the file in the native format and to a location of your choice. If it doesn't ask you to choose a location, it will automatically get saved to your Documents folder.
- Here is a video showing this: http://www.screencast.com/t/TZLhwhiadEX  
- Please attach this file in your next reply 

In the subject please put: Attention - Aaron Young

Thanks!

Please let me know if you have any questions.

Kind Regards,
Aaron
Technical Support Specialist
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Jack Fruh, Champion

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Hi Gil I'm starting to wonder if this isn't some kind of OSX audio issue.
It does the same for me, not just in Camtasia but also in another screencapture and editing tool.

What is consistent is that it happens when my old, outdated M-Audio Fastrack pro is connected. If I unplug that it's been fine.

Based on the type of distortion I am seeing it sure feels like a clock/sampling rate issue.

According to audio MIDI setup, everything is set to 44.1 16 bit.

Out of Curiosity, do you also have a USB audio device connected, if so could you share the make/model and driver version?

Also you're using a USB audio device, could you try unplugging it and see if you can capture the system audio without glitches.

For reference, my M-Audio device is no longer supported and I can't get a custom driver that lets me set the various input modes like 96k recording.

I've been eyeballing a new interface for a while now and if it would fix this issue, it would be totally worth it for me.
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George

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Hi guys

I'm looking to purchase an audio interface so I can use a better mic, can you confirm if this is possible or do I need to record the audio in a different app then import to camtasia after editing? 

I'm thinking of getting the Zoom TAC-2 Thunderbolt Audio Interface for Mac