[Rick Andes]

Thanks a lot Oleg!

One problem remaining. I copied the keyframes to a path as you suggested, including the two extra keypoints (see screenshot #1). The wave must emerge from a flat line, so I added two extra path keyframes with a flat line.

The wave emerges from the left instead of the center. How can I fix this?

Screenshot 1

Screenshot 2

[Rick Andes]

Thanks Sergio. Do you mean importing a PNG/JPG file from Photoshop and create a Mask with Auto Trace? I tried this workflow but there are two main problems:
2) This function creates an outline mask (contour). I need a single line path instead of a contour.
1) It loses functionality. For example: I can’t change colors afterwards

Maybe a different workflow?