So I've got an image sequence, but the size of these JPEGs in the sequence are not uniform. One is 720x480 another might be 700x400, etc. Luckily though, I can deal with the image sequence inside the comp like a uniform sequence and can resize it etc, no problem. The only issue I'm having is that when on of the slightly smaller images comes up, black borders are created on the bottom and right side of the frame to fill in the missing information. I have this image sequence resized and on top of a separate image, so I would like for there to be transparency instead of black on the sides. I'm wondering if anyone knows how to achieve this? If I key out the black, it works relatively well, except of course the other black bits also become keyed out so there are small holes. Any recommendations would be appreciated. Thanks.