one of my dead project which was about endoscopic data capture and saving in mp4 format. which was using blackmagic card to capture all data and it was working in linux with power of QT and ffmpeg.
I was thinking I may publish in google code svn repo. but there is no development plan on it so no need to have any repo. people who need to capture data from blackmagic capture card and save it in video file may find this as helpfull example.