Not sure if this will answer your question or not but here goes.
When you capture your video (each individual segment) and place into Pinnacle for final editing you will be able to see that you can modify the sound volume on the Audio track section by just going to the little tool box above and to right. You will then click on the open/close audio toolbox which will open up to the screen that allows you to modify the master volume of the video. Just move the sound down or up until you get to the setting that sounds the best. You also are able to tweak the volume easily through the video at any time if it needs to be louder or even softer still on the actual time line of the audio track.
I hope that I have explained it well enough. I have never been good as a teacher.
Wish you the best.
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