The animations

An animation in the music box is a picture that moves slowly. Pictures and movements are made separately, and the music box combines them: each time, a picture with a movement.

For now, pictures and animations are designed for a very specific audience: Babies (0 to 18 months), but later on you'll find music boxes designed for Toddlers (18 to 36 months) and for "big" Children (over 3 years).

The pictures

The main picture is a music box, with its crank or its key, centred and clear.
Characters around it, or that seem to come in and out: for example, cuddly toy animals sleeping, a group of flying fairies, an astronaut and their spaceship.
They are generated with AI, with a whole set of restrictions to adapt each picture to the audience it is meant for. This adaptation is our "Visual Seal".
Nothing scary, no aggressive expressions and no letters. All the characters are smiling or sleeping peacefully.
Dark, warm backgrounds for babies and toddlers: never white or blue. Why, in The colours.

The movement

Slow, gentle and predictable: rocking, breathing, slowly turning. No jumps.
They are also generated with AI, with their own restrictions. This is also part of the "Visual Seal".
For a young child's eyes, what matters is not how far the picture goes but how fast it moves. Each music box has a maximum speed for its age: 7.5 degrees per second for babies, 15 for toddlers and 30 for children. If an animation is faster, the music box slows it down by itself.
Never more than 3 sudden changes of light per second (the international accessibility standard, WCAG).
If the device has "Reduce Motion" turned on, the music box respects it.
"Diversity": every music box has its own movements; we want all our music boxes to be different.

Where these figures come from (the studies on how babies follow things with their eyes) and all the rules: Visual Seal.