Processing audio for a video project can be quite easy if you learn to use digital audio workstation software, commonly referred to as DAW. Here are few things you should know about DAWs and how to unleash their potential in both your audio (music, voiceover, podcasts, etc.) AND video projects.
NLE or Non-linear video editing programs are commonly used for basic audio editing on video projects. But if you need beyond basic editing for your video’s audio, we recommend using a DAW, such as Reaper (Ken’s primary choice) or Pro Tools, etc. This is especially true if you are working on multiple dialogue tracks, sound effects, and music tracks. What is complicated for NLE you will find it easy when using a DAW.
For a bit on how to do basic audio-for-video editing in Reaper, see Ken’s article (with video) here: https://www.homebrewaudio.com/editing-video-in-reaper/