Guys, I have transparent graphic of a compass that I would like to overlay on a video. I would like to smoothly rotate this graphic either continuously (loop) or using a set rotation arc (like 0 to 180 degrees). The existing rotate effect in Cinelerra is very basic..it does a rotate of a set or custom degree arc incrementally, one rotation at a time.
As a test, I created a project with a transparent image (png file) stretched to 60 frames. I set a rotate effect every five frames with a degree change of 5 degrees each. So the image would rotate 5 degrees every 5 seconds..5, 10, 15, 20 degrees up to 60 degrees. It worked, but the output was choppy and the procedure is obviously very labor intensive for what should be a somewhat simple task. I also tried the motion effect, trying to do the reverse of rotation correction. However, the motion effect is difficult to work with and I haven't had enough time to fully test this method. Is there an easier way to accomplish what I want? Or perhaps I am just not seeing something simple. Again, the goal is to rotate a graphic or video smoothly, just like we do today with camera/projector automation of X, Y and Z coordinates. If rotation was implemented in the same manner, we could also using keyframes and bezier curves to do rotations. scott _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
