Does OBS Studio have such remote audio/video input capabilities natively... not really (presuming VPN, and other means of connecting aren't what you are looking for)
Are there plugins and other options for video compositing including remote and local sources? Yes
- Two people in remote location with collaborative recording
- One on Windows (me) and the other on MAC.
You'll need to be more specific as to what you mean by "Two people in remote location with collaborative recording"
Typically, one person runs OBS Studio (location with most appropriate computer, adequate and reliable Internet connectivity ... though cellular maybe an option ... depending.) The person running OBS Studio controls recording, presentation, overlays, etc. And would typically be considered 'local'. All others would be remote, and typically would only be providing content (audio and/or video)
Assuming what you are after is as I described above, then yes, lots of options
- obs.ninja was an attempt at beginning of COVID-19 lockdown. but had issues then, not sure if that plugin still around/stable/working?
- There or multiple streaming protocols, each with their own Pro's & Con's. The higher the quality resolution desired, when combined with desired low latency and consistent jitter, etc tends to require a patented algorithm ... but it depends
one example would be NewTek's NDI 5 with Bridge
but there are other options. It gets into how sophisticated one is technically, especially with networking (VPNs, TCP vs UDP etc). There are DIY approaches that can work fine. But like most things DIY, are more involved, so time and budget come into play.
If participants are a set group, then spending some time, free DIY may make sense. If 'guests' will vary over time, different equipment, device OS, network connectivity, etc... then a more flexible, ease-of-use and reliability of guest connection may be more important.... it depends.
Assuming, only 1 person running OBS Studio, different Operating Systems isn't really much of an issue, if at all. If both on MacOS, then certain Mac-specific approaches would be an option, but there are plenty of equivalent cross-OS approaches.