Essentially If you can create a GraphEdit Filter Graph in GraphStudioNext and use the Insert Dump Filter on the pin to send the output to a file (first your capturing MPEG2-PS with DVD Nav data to a file, win!) and then you can use ffmpeg as a frame and audio stream server to offer up a UDP url endpoint that the OBS Studio can then play live and transcode if you want and save to something like MKV or other formats like MP4, or MP4 in an MKV wrapper.
In "theory" this process will work for "any" video capture device you can construct a GraphFilter for, code free.
In this instance I got curious because I discovered Windows 11 still stupports this video capture device if you turn off the Windows Security - Memory protection feature, which for obvious reasons would break many legacy hardware device drivers.
