I have many hours of podcasts recorded and need to add a simple Powerpoint presentation so I can upload a basic video to YouTube and Vimeo. I don't want to rerecord the audio or alter it too much. I'm using Windows 10 and will purchase Camtasia if it's possible. Thanks.
If you have PowerPoint installed on the same computer as Camtasia you can open the PowerPoint presentation in Camtasia, import your podcast audio as a separate track, edit and produce as a new combined file.
We have a free trial, so you could try it out yourself. If you decide it works the way you want, you can purchase and unlock the software to reproduce you're video without the watermark that the trial version will insert.