I’m at work at the minute … but I can fire up OBS later and document some of this for you. Can I clarify a few of things:
- I assume you are running on Windows 10… its a bit different depending on the OS used;
- Are you using an audio interface or built in mic or something different?
- What video do you want to end up with… you on bass, your son on guitar, both video recordings side by side or youtube backing track or something different?
OBS is a bit different from video editing software… it was built for capturing and streaming live… so it works best when you get all your (audio and video) capture sources and (audio) levels set up in advance and then record the whole scene in one take. Your requirement to add in your sons recording later is giving me some pause for thought… that is not playing to OBS’s strengths.
Generally you want to get everything working off one master clock… I use the audio interface. So I’m not sure how well the second recording (your son) will sync up… I need to experiment.
I have used it for capturing video for my son’s drum kit exams for RockSchool video graded exams and it worked well for that. (Micing the kit and getting good levels for the backing track is hard though, I used Cakewalk DAW for manipulating all the sound sources!)
We also use OBS for my son’s bass lessons. He uses musicgurus.com (replay) as the tab and backing track. We use a Zoom H6 audio interface and webcam to capture my son playing along… then OBS merges the video sources and streams it to Zoom meeting so that his teacher can watch Chris playing along and also see and hear what he is playing along to. (Hope that makes sense, I may need to add some examples later!)