Camtasia 8 quirks

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I have downloaded an upgrade of Camtasia studio 8.
I could frustrate it within 15 minutes by simply continueing on older work.
Notice:The garbled audio is not the audio of the project that was converted, but is recorded in garbled condition by Camtasia 8.

http://www.screencast.com/t/mu6ZC7Zrxw
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vvoois

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Posted 7 years ago

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Randy Schott

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Hi there,

I'm not sure exactly what issue you are trying to report, but my guess is the fact that it stopped responding to mouse clicks?

We have seen this issue internally and for the most part it was fixed. It's caused by our hardware acceleration fighting with the UI thread. There are a few workarounds:

1. Turn off GPU acceleration under Tools->Options. Not recommended because your preview window performance will suffer. But if you have a fast processor, it might be acceptable.
2. Turn off Desktop Composition in Windows (disable the Aero theme).

Neither of those is a suitable long-term solution, but it might help you for now.

As for the garbled audio, is that how the audio is in the recorded file from Camtasia Recorder? You can extract the contents of the camrec and play the AVI file separately in another player (Windows Media Player for example). If it sounds fine in another player, it might just be that our audio engine is having some trouble.

If it is garbled in another player, that means recorder messed up while recording the audio. This can happen if the data rate in the encoding settings is too low, or sometimes if your sound card has a different sample rate. You may want to contact Tech Support separately about that issue.

Lastly, I just wanted to make sure you knew that it is expected that the preview window will stop when you make changes to parameters on clips. For stability reasons, we don't allow modifications while the project is playing back, so we will automatically stop the preview when you make any modifications to the project. I think the one exception is for auto-syncing captions.

Randy
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ProspectorJess

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I have seen a strange behavior when mixing video & audio from a webcam - the thing I spotted was a 10fps with a 30fps sample rate. Shouldn't cause an audio problem but it did cause a skewing of webcam vs audio synch for some reason. Looked like it was garbled but it was just out of line a few frames...
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vvoois

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It sounds plausible and i don't know if this still might be the case for CS 8.
The video that you see playing in CS8 here was rendered with CS7 and the audio in that video sounds fine, it is just the recording that i did of that CS8 scene to reproduce the hanging problem, the audio glitch came extra for free.
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ProspectorJess

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Had same kind of problem with webcam video - found capture in PCM worked far better than MP3. The current mp3 codec & cam 8 editor on timeline breaks synch badly.
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vvoois

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Hi Randy,

Regarding the hanging:I understand that the program intensionally stops playback when altering any of the modifier parameters, during my exploration of the program, i just seem to have found a hole in that guarding-system and that seems to be the colorize fader. I can achieve this with converted projects, with the native quickstart project this guarding system seems to work as it should.

I will check the audio in the video when i get back home to split it. The frequency settings of the audio card should be ok, if the frequency settings do not match the application its frequency settings, then there is no audio at all. I can get garbled audio when i would patch 64-bit audio to a 32-bit MME input using the audio card driver's internal patching system, but i don't have any lines patched currently and the garbled audio usually sounds a lot worse in that case. Nevertheless, the audiodrivers are still 64-bit and the only proper way to get 32-bit audio is if it is played through DirectX since that system is still 32-bit. But in this case i expected the audio to fit properly since Camtasia is 32 bit so it can only cast a 32-bit audio stream. But looks like the audio-driver somehow converts this back to 64-bit.

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