In this episode, I show my workflow to correct the volume level when rendering with Camtasia.
You’ll need FFMPEG Download it here: https://www.ffmpeg.org/download.html
Setup FFMPEG and path: http://blog.gregzaal.com/how-to-install-ffmpeg-on-windows/
And lastly, here is the command line I use for the remux:
Remember, no spaces in filenames unless you “wrap the filename in double quotes”.