Audio out of sync on render (Camtastis 2019)

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I've recorded a number of videos using the Windows camera app, and have successfully edited and rendered them in Camtasia 2019. Today though, the video I just edited has the audio slightly out of sync on rendering. When I watch the edited video in the preview window it looks just fine, and I haven't changed any settings anywhere else. So I'm struggling to see why this specific video is a problem when all the others worked just fine... Any help appreciated!
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errey.steve

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Posted 1 year ago

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errey.steve

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Any ideas folks? I can see that the source file audio is 48Khz and gather that Camtasia can only deal with 44.1Khz, but I don't understand why it's fine in the preview window and only out of sync on export. Is there a way I can re-encode the mp4 as with 44.1Khz audio, as I'd rather not have to shoot everything again :/
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Joe Morgan

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Hide any "Other tracks" containing audio by selecting the eyeball at the beginning of the track to "Turn the track off".

Go up to the Share tab.Export as a .wav

That will actually convert the file to a 44,100hz 16 bit .wav stereo file without doing anything else.
You should be able to replace the existing audio with it.Just right click webcam video, select separate Audio and Video.Right click the audio file and select update media. Chose the exported audio file.
Or chose another method, if it works better for your situation.

I had one person that had an issue with a shuddering mp3.Exporting didn't correct the issue for them for some reason. They had to convert the exported file with a audio converter.
There are online converters.https://audio.online-convert.com/convert-to-wav

Or you go with a free application like Audacity.But that's more complex than a conversion if your unfamiliar with the program.https://www.audacityteam.org/

Regards,Joe
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Barry Clark

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I got exactly the same issue today.  Recorded a video in the Win10 camera app. It was quite large in size, so imported it into Camtasia to resample it to 15fps and 44kHz sound and 720p.  After rendering it the sound was at least 1 second out of sync and the video was unusable - looked like a comedy sketch.  This seems like a major bug in Camtasia?  I even split the sound and video tracks but that made no difference.  Can you please advise what the solution to this is?

Barry
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errey.steve

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Hey Barry, this was a while ago, but if memory serves I simply split the audio/video and then bumped the audio forward by 4 or 5 frames so that it was in sync. The vast majority of videos seemed to work fine, and I don't think I ever worked out why one or two would suffer from this problem...
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johnftseman

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im having this issue. video and sound is fine when editing and playing back before rendering. i used a huddly go camera which has worked thousands of times before but today it didnt with this sound issue. I used another camera and the rendering synced as it should.  I know camtasia doesnt work with internal video capture cards [much to my expense!] but this new issue is going to make the program useless for my needs. 
So to recap same issue as errey.steve. sound goes out of sync only after rendering. ive tried the save as wav and add it back in, that didnt work. also edit>preferences>advanced> hardware acceleration> use software-only mode  failed to rectify the problem.