Elgato Cam Link for Green Screen Vlogging

[maxotics]

Hi everyone.  I've been working on a setup where I can efficiently green screen vlog from my desk.  I have a solution that seems to work well, so far.  I'm using an Elgato Cam Link ($130), Bandicam ($40 HDMI capture to motion JPEG), an Evoyo HDMI monitor ($60) and Teleprompter Pro ($8) for PC.    Also using a QICENT USB 3.0 hub ($30?) .  After a lot of experimentation I've become a believer in Motion-JPEG as a poor man's ProRes. 

There is one part of the solution I couldn't find an option for.  How to record the Cam Link Direcshow stream to Prores, Cineform or DNxHD, etc?  Does anyone know an open-source solution? (Yes, I know you can do it with ffmpeg, but it's very complicated)  It seems OBS only does H.264.  For me, I'm fine, but those on stricter budgets might want a solution.  Though OBS is probably sufficient for most people's needs; definitely if green screen editing isn't a necessity.  Anyway, here it is if you have any interest in HDMI capture.  BTW, I almost sold my A6300.  So glad I didn't!  I also tried the C100, but I believe it interlaces its HDMI output, anyway, the Cam Link didn't do well with it.  Maybe I'm missing something there.