I've animated a single long image (PNG) by position only. The image is of a mobile photo feed and I've animated it so that it "scrolls" upward.
On the long, single PNG image, photos are laid out, one-by-one, on a dark grey background, with a tiny margin. The photos have a small corner radius. The PNG was created in Figma.
In the AE project, the animation looks perfect, yet upon export, when playing the photos, tiny white specks flash around the corners of many of the photos (the white flash takes the shape of the image corner beyond the corner radius to the corner point it would have had, had the corner radius not been there).
Additionally, many of the photos show an animating white strip around the left and right edge of the photos, maybe a pixel or so wide, yet not every single image. Just to reiterate, the images within the single animated PNG are laid out with a solid grey background. The AE composition also has the same color background (not that it should matter), but where is this white coming from?
My Rendering Settings
QT ProRes 422 HQ, RGB, Premultiplied • one at 500px width, the other at 1733px width
QT ProRes 4444, RGB + Alpha, Straight • one at 500px width, the other at 1733px width
Any help is very much appreciated!
1st: how the sides and corners of all the photos look in Figma