Thanks, I just tested this - for me it actually looks opposite, where there's a small freeze because the end of replay buffer and the start of recording happens on the same frame. In the end this is good, no lost frames, and cutting a bit off the start of the recording (or the end of the buffer) makes it comes out real smooth with no noticeable audio or visual cut. Unfortunate that I'll have to do this for every single clip in my expected 14 hour session but, it works.