Stereo was rendered as mono?

Comments

9 comments

  • Leif Alton

    There is a 'mix to mono' option on the audio tab of the properties panel.  Select the media with the audio, open the properties panel, choose the audio tab, and see if that option is checked.

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  • danlthom

    Hey Leif - glad you got back to me so fast. No, it clearly plays as stereo in Camtasia. It would not do that if that "mix to mono" button were checked. It is, in fact, unchecked. I started a clean project, imported the same audio, rendered to mp4, and it came out mono. This is on a Mac M1. Then I did the same on the older Mac Intel and it rendered in stereo. So it might be something in Rosetta, or it might be some setting in Camtasia, although I've never seen that setting before, if it exists. I'll keep looking. Same software versions, same OS versions

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  • Leif Alton

    I thought Camtasia used to have a mix to mono option in the export advanced options dialog, but I did not see one.  Perhaps it is still there but not exposed and somehow got accidentally set on your system (assuming it is not Rosetta/M1 specific).  You could try resetting your export options. You could try exporting as audio only and see if it exports in stereo in that case.
    Not that any of those options may be useful to you but it may help narrow down the issue.  If it is Rosetta/M1 specific, I doubt you can do anything to correct it and will have to report it to Techsmith Support.

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  • danlthom

    Thanks Lief - We are thinking along the same lines. I've tried those things. It does seem odd. I went back and looked a projects going back to when I first started transitioning to the M1 and they all came out as mono. I just didn't notice because they weren't really broad in the stereo sense. All my other audio and video tools besides Camtasia render correctly, but they might all be native M1, which would point to Rosetta possibly. Do you want me to open a ticket?

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  • Leif Alton

    I would definitely report it with as much detail as you have stated here.  Then it will get looked at and can get fixed in a maintenance release.  If it can't be fixed because it is an Apple hardware specific thing with no known or discovered workarounds, at minimum a ticket can be opened with Apple.

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  • danlthom

    Thanks again Leif - As a test I built a project with a wide stereo field on an Intel Mac where it rendered correctly. Then I copied the project to an M1 Mac, where it rendered to mono. I sent all that information to support along with the project files. I'm not really expecting a fix. I just want to make sure I haven't misconfigured something. And if there is a bug, I want support to know about it. Camtasia is such a great product.

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  • Leif Alton

    Perfect!  I'm glad you enjoy using Camtasia. There's a lot of goodness coming down the road so stay tuned. I know there are some issues when exporting to H265 or Apple Pro Res 4444 on M1 when there is transparency involved so it is quite possible that there are Apple M1 issues with audio as well. If there are then I'm guessing it would have to be something in encoding since the raw audio or video data we pass to the encoding phase is identical whether on intel or M1 hardware. We'll take a look when the bug comes through.  There could be something that needs to be tweaked on our end so if it is in our control to fix it we will.

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  • Simon Sherbourne

    Hi I'm having the same problem. I've trying to update a project that was created (and exported fine) on my older Intel Mac. On my new M1 MacBook Pro I can't find any way to export more than one audio channel. Tried video and audio only exports. Previews fine in the timeline.

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  • danlthom

    Hi Simon - Yes, that's it exactly. same problem - It appears to be a bug either in Camtasia or the Codec they're using, that it always reverts to mono. 

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