scrolling credits at constant speed?

jbeale1 wrote on 4/3/2003, 11:19 PM
Hi Folks, can someone help me with track motion for scrolling credits?

My credit scroll is a tall JPEG image, 720x3200 pixels in size. I use the "Event Pan/Crop" control in V4 to assign two keyframes, one at the top of the image and the second at the bottom. This works but the credits slow down gradually towards the end of the scroll. That would be fine if I was trying to create a rostrum move, but I want constant-speed credits. There seem to be two, or more ways to change the speed: I can right-click on the keyframe diamond at the bottom of the window. I've selected "linear" interpolation in each case. Also the Event Pan/Crop window has a "Smoothness (%)" control, which I set to zero. Despite this I still get a slowing-down of the credit scroll at the end, where I wanted absolutely constant speed (which I thought "linear" interpolation should provide. Is there a way to do this?

thanks!

Comments

jbeale1 wrote on 4/3/2003, 11:40 PM
Found the problem: I had set the "Smoothness" to 0% at the first keyframe, but it was still at 100% in the last keyframe. I set both ends to 0% smoothness and now the credit scrolls at a uniform speed. (It would be nice if the help function was a little more clear on how to do this, I'd think this would be a very common operation.)