Very interesting!  Of course, I had to check the screenshot, which is definitely CinGG but not up to date because I see the "View Scope" icon missing in both the Viewer and the Compositor.

I am guessing they still exist? or else there website would have died?  You can see photos of Adam and Mike Collins at: 
   http://lmahd.com/meet-us

On Wed, Nov 22, 2023 at 6:31 AM Andrew Randrianasulu <randrianasulu@gmail.com> wrote:
Interesting bit they show screenshot of cinelerra-gg (I guess due to icons and ffmpeg button) yet  link leads to Adam's CinHV site :)

http://lmahd.com/

https://web.archive.org/web/20230124225956/http://www.lmahd.com/


it was interesting trip down to memory line .....

I wonder how exactly their sdi drivers worked, back in 2001 or so ... die to v4l limitations. Custom extension?

https://web.archive.org/web/20011029181742/http://www.linuxmediaarts.com:80/hdtv.html