https://bugs.winehq.org/show_bug.cgi?id=47048
--- Comment #8 from Benedikt beniwtv@relamp.tk --- (In reply to Damjan Jovanovic from comment #7)
It sounds to me like you're looking for any app that can capture video in Wine. There are some that do. Try the Windows version of VLC for example (Media -> Open Capture Device -> Play).
We're actually looking to get FOIP in Star Citizen working :) Some apps may use a different API I guess for capturing, indeed Star Citizen seems to use the same as "Portable Webcam" (hence the example).
That /dev/video0 vs video1 bug was fixed by several commits between 20 and 23 April 2019, just a few days after your bug report. Please retest with a recent version of Wine, and if you still get it, report which version.
Yes, I tried with Wine 4.20 and this seems to work properly now.