This example uses code from https://docs.rs/zune-png/latest/zune_png/fn.post_process_image.html to demonstrate issues in zune_png's apng example.

Please run:

cargo run -- ./Animated_PNG_example_bouncing_beach_ball.png

Frames 2 and 19 have artifacts.

Animated_PNG_example_bouncing_beach_ball.png taken from https://commons.wikimedia.org/wiki/File:Animated_PNG_example_bouncing_beach_ball.png, public domain

This is more apparent in the "clock" example, which can be optained by running wget https://davidmz.github.io/apng-canvas/images/clock.png and running cargo run -- ./clock.png