I have imported a painting into Aftreffects. I then created a mask on the painting in the shape of a leaf and animated the masks path using key frames.
I realised that the painting is very pixelated. The painted image is very scaled up, however when I try to reduce the size, the mask size is also reduced and the key frame path is changed.
I have already selected continually rasterise- to no avail.
Is there anyway to stop this pixilation, reduce it or smooth it out, with an effect or otherwise?
I am a beginner so please use simple instructions and thank you so much for answering!
(I also tried using alpha matte channels- to import a new painting to put underneath the mask- however I couldn't figure out how to copy over the exact key frames so that the new alpha layer would move with the mask.)
A picture's worth a thousand words. Provide a screenshot. That aside I think you simply have a fundamental misunderstanding about how pixel-based images work. They always have a fixed resolution and all the magic switches AE has to offer won't change that.
I also don't understand what you're trying to do. You can use a mask on your layer as a track matte for a duplicate. Then you can scale that duplicate to your heart's content and the mask will stay the same size and shape.
Info on Track Mattes here: After Effects Help | Alpha channels, masks, and mattes
Get a bigger image of that painting.