Jonas Wulff wrote: > Another thing about professional credits is that their scrolling speed > is usually constant, so one should make sure to use the bezier handles > to prevent motion 'fade-in/-out'. Just to mention.
Yes, it's usually essential to tweak the handles to maintain a constant scrolling speed. Otherwise things scroll *really* slowly at the start and the end, which looks kind of odd. The other thing to keep in mind is that some scrolling speeds are better than others in terms of smoothness. For scroll speeds which give less than one pixel movement per field interval (or frame interval, depending on how you've structured things) it's less of an issue, but for anything close to or above this (which is where all practical speeds lie) you need to set the speed to ensure you don't effectively loose scan lines or indice movement-related flickering effects when displayed on an interlaced monitor (like a TV). Preferably you also try to make sure the movement between each field/frame is the same number of pixels or you can get odd "wavey" effects during the scroll (which are more noticeable on smaller features). Basically this boils down to using a speed corresponding to an integer number of pixels per frame (if keyframe actions occur only on frame boundaries) or an even integer number of pixels per field (if keyframe actions occur between fields). > Good idea to use OO! Yes, I've used it now for several years to good effect. To prevent flickering due to interlacing effects it's best to ensure the width of horizontal features of fonts and graphics are at least 2 pixels high. This can sometimes be awkward, so another way of achieving almost the same effect is to run a 1-2-1/4 vertical convolution effect in the gimp (Filters-Generic-Convolution Matrix...) and creating the final graphic for import into cinelerra from the result. Regards jonathan _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
