For the record, been awol IRL with school, kids etc, but just got the latest build from nightlies on my 5D3 1.2.3 and it seems loads better, the mlv format seems more solid now as well, and I've not seen any pink/corrupted frames in my limited testing, I just don't have one of those super fast computerbay or other cards that can handle raw at 80+Mbs. It is looking really good otherwise from what I've seen.
Thanks for the excellent work.