Video Transition: Forgive me, I'm so stupid I hadn't thought of the obvious. Thank you Andrew for your patience. All video transitions work fine, I was only not seeing their effect because I was cutting (X) one same edit and thus its continuity did not show the effect of the transition. Excuse me! Expanders.txt: I remember that even the first time expanders.txt was introduced I had broken the formatting with some changes. I use Kwrite for plain text; apparently it has different support for text encodings than what is used in expanders.txt Cinepak: Cinepak works and gets to the end of the rendering. Only on my system it is so slow that it seems to freeze and not work. It took me 8 min to render a 9 second video! With the other codecs it takes me about 4-9 seconds.... (Note: ffmpeg-4.4 adds encoding to new formats: cineform HD; SpeedHQ and PFM. I'll try to make some presets later). Last frame rendering: The video (290 frames) with the last red frame, was rendered in CinGG. Then it was re-imported in CinGG and the last red frame is visible; the frame count is right: always 290 frames. Even with external playes the last red frame is visible. I would say it's a counting problem, but the result is right. So for me it is OK. [There's too much confusion in my head lately; I better take a break....]