I've run into what I think is a bug in Premiere Pro CS5. I've got one large clip that was pulled from an analog camera, and I'm cutting it into scenes. When I try to add a transition between two such scenes, it just doesn't work. If I do a two second clock wipe, for instance, I can see the hand of the clock rotating, but I just see the left image for one second, then a sudden cut to the right image for one second, with no transition. Can anyone confirm that this is a bug, and is there a workaround? Thanks.
If I understand your setup correctly, then this is not exactly a bug. Let's say you have two media files A and B. Let the frames constituting media A be A1-A100 and the frames of B be B1-B100. Let's say A is trimmed to A1-A75 on the timeline and right next to it is B trimmed to B26-B100. Now, if you add a 50 frame transition centered at the A-B interface, the editing software will use B1-B25 as the target video counterpart to A51-A75 on the timeline and A76-A100 as the source video counterpart to B26-B50. So when you do a 50 frame dissolve from A to B, B1-B25 will start fading in as A51-A75 starts fading out. In your case, you seem to be transitioning between contiguous scenes, so they are IDENTICAL. So an additive dissolve, for example, will almost flash to double luminance before settling into the new clip. A borderless linear wipe shouldn't register and so forth.