Hello, I am using PD 19 ultimate
I frequently use masking and green screens. I started a new project and when I tried to apply a mask to a scene where I wanted to transition from a full screen to a mask that would basically allow only the center portion to be visible. I wanted a moving mask. But putting in key frames didn't create the transition I wanted. The keyframes mostly just reflected whatever I started with. I chose a rectangular mask, and unchecked maintain aspect ratio. The clip is about 4 minutes. I've never encounterd this problem before. However my usual clips are under 30 seconds.
I restarted my computer, re-opened the project. I am out of ideas why the mask isn't responding to the selected key frames. Thanks for any help.
follylynch
Ps I can't figure out where to post my screenshots. Thanks for the tip about attachments. I missed seeing that button.

I wanted to start with Wanted mask 1 and end up at wanted mask 3. But program kept changing to whichever keyframe I manipulated first. See pix. Thanks for help. I never remember having any problem with this before.