Hey @eric.kiser,
Everyone is going to tell you a different way they do it. None are wrong, and all are right for that person.
I personally haven’t used OBS for recording that much. I made a birthday video to Sara last August (which I posted here), in which I played Happy Birthday to her on my fretless, and then on the upright with both arco and pizzicato. In this case, both the video and audio were recorded simultaneously. OBS did the trick okay, but I still had to edit the final take in my video editing software. Some people use OBS for “soup to nuts” but I prefer to do post in Premier Pro.
With that said, I have found my Android phone, or more recently a GoPro camera, is far more efficient for recording video over soundtrack. Premier Pro makes it easy enough to align the two tracks so it’s quite handy. However, I will say there’s a learning curve involved and it can be fairly steep.
In my opinion (just my personal viewpoint) OBS is made more for live streaming than it is for recording. Not that it can’t, or isn’t being used for that purpose, I just think its strong suit is live streaming. I do plan to use OBS in future cover videos, but it’s role will only as an additional camera, not for any of its editing features.
It’s complicated stuff Eric but there are plenty of us here who will give you a helping hand or advice whenever you need it.